Rubber Grommets
Rubber grommets are essential components designed to protect wires, cables, and hoses from abrasion, chafing, and environmental damage. Our comprehensive selection includes both standard grommets for general applications and military-specification grommets that meet the rigorous requirements of defense and aerospace applications.
These versatile rubber components serve critical functions across multiple industries, providing wire protection in automotive wire harnesses, vibration isolation in electronic equipment, and environmental sealing in appliances and industrial machinery. Whether you need basic wire protection or MIL-SPEC compliant components for mission-critical applications, our grommets deliver reliable performance in demanding environments.
Available in various materials including EPDM for outdoor applications, neoprene for oil resistance, silicone for high-temperature environments, and specialized compounds for military specifications, our grommets can be customized to match specific performance requirements, environmental conditions, and dimensional specifications.
From simple wire protection in consumer electronics to complex cable management systems in military vehicles, our grommet solutions provide the durability, flexibility, and protection required for modern engineering applications.
Military Grommets
MIL-SPEC compliant grommets meeting MS-35489 standards for military and aerospace applications. These grommets provide superior wire protection, vibration dampening, and environmental sealing in the most demanding conditions.
Military Specifications
- • MS-35489 Military Standard
- • MIL-R-83248 Material Specification
- • Grade SB-512-ABF2 Rubber Compound
- • Temperature Range: -65°F to +300°F
Military Grommets
MS-35490 Military Standard Split General Purpose Grommets. Rubber synthetics, material specification MIL-R-003065 A (ORD) Grade SB-512-ABF2
6 columns
| Image | Part No | MS No | Inside dia (A) | Groove width (B) | Groove dia (C) | Outside dia (D) | Thickness (E) | Add to Quote |
|---|---|---|---|---|---|---|---|---|
 | NRC-G-5001 | 1 | 1/8 | 1/16 | 1/4 | 11/32 | 3/16 | |
 | NRC-G-5002 | 2 | 1/8 | 1/16 | 9/16 | 3/4 | 3/16 | |
 | NRC-G-5003 | 3 | 1/8 | 1/16 | 1 | 1-1/4 | 1/4 | |
 | NRC-G-5004 | 4 | 3/16 | 1/16 | 5/16 | 7/16 | 3/16 | |
 | NRC-G-5005 | 5 | 3/16 | 1/16 | 5/8 | 7/8 | 3/16 | |
 | NRC-G-5006 | 6 | 1/4 | 1/16 | 7/16 | 5/8 | 3/16 | |
 | NRC-G-5007 | 7 | 1/4 | 1/16 | 3/4 | 1 | 1/4 | |
 | NRC-G-5008 | 8 | 1/4 | 1/16 | 1 | 1-1/4 | 1/4 | |
 | NRC-G-5009 | 9 | 5/16 | 1/16 | 9/16 | 13/16 | 5/16 | |
 | NRC-G-5010 | 10 | 5/16 | 1/16 | 3/4 | 1 | 5/16 | |
 | NRC-G-5011 | 11 | 3/8 | 1/16 | 5/8 | 7/8 | 5/16 | |
 | NRC-G-5012 | 12 | 3/8 | 1/16 | 1 | 1-1/4 | 1/4 | |
 | NRC-G-5013 | 13 | 7/16 | 1/16 | 11/16 | 15/16 | 5/16 | |
 | NRC-G-5014 | 14 | 1/2 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
 | NRC-G-5015 | 15 | 1/2 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
 | NRC-G-5016 | 16 | 9/16 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
 | NRC-G-5017 | 17 | 5/8 | 1/16 | 7/8 | 1-1/8 | 5/16 | |
 | NRC-G-5018 | 18 | 5/8 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
 | NRC-G-5019 | 19 | 11/16 | 1/16 | 1 | 1-5/16 | 3/8 | |
 | NRC-G-5020 | 20 | 3/4 | 1/16 | 1-1/16 | 1-3/8 | 3/8 | |
 | NRC-G-5021 | 21 | 3/4 | 1/16 | 1-7/16 | 1-13/16 | 3/8 | |
 | NRC-G-5022 | 22 | 7/8 | 1/16 | 1-1/4 | 1-5/8 | 7/16 | |
 | NRC-G-5023 | 23 | 1 | 1/16 | 1-3/8 | 1-3/4 | 7/16 | |
 | NRC-G-5024 | 24 | 1-1/2 | 1/16 | 1-3/4 | 2-1/8 | 7/16 | |
 | NRC-G-5025 | 25 | 1/8 | 1/8 | 9/16 | 3/4 | 1/4 | |
 | NRC-G-5026 | 26 | 1/8 | 1/8 | 1 | 1-1/4 | 5/16 | |
 | NRC-G-5027 | 27 | 3/16 | 1/8 | 5/16 | 7/16 | 1/4 | |
 | NRC-G-5028 | 28 | 3/16 | 1/8 | 5/8 | 7/8 | 1/4 | |
 | NRC-G-5029 | 29 | 1/4 | 1/8 | 7/16 | 5/8 | 1/4 | |
 | NRC-G-5030 | 30 | 1/4 | 1/8 | 3/4 | 1 | 5/16 | |
 | NRC-G-5031 | 31 | 1/4 | 1/8 | 1 | 1-1/4 | 5/16 | |
 | NRC-G-5032 | 32 | 5/16 | 1/8 | 9/16 | 13/16 | 3/8 | |
 | NRC-G-5033 | 33 | 5/16 | 1/8 | 3/4 | 1 | 3/8 | |
 | NRC-G-5034 | 34 | 3/8 | 1/8 | 5/8 | 7/8 | 3/8 | |
 | NRC-G-5035 | 35 | 3/8 | 1/8 | 1 | 1-1/4 | 5/16 | |
 | NRC-G-5036 | 36 | 7/16 | 1/8 | 11/16 | 15/16 | 3/8 | |
 | NRC-G-5037 | 37 | 1/2 | 1/8 | 13/16 | 1-1/16 | 3/8 | |
 | NRC-G-5038 | 38 | 1/2 | 1/8 | 1-1/4 | 1-1/2 | 5/16 | |
 | NRC-G-5039 | 39 | 9/16 | 1/8 | 13/16 | 1-1/16 | 3/8 | |
 | NRC-G-5040 | 40 | 5/8 | 1/8 | 7/8 | 1-1/8 | 3/8 | |
 | NRC-G-5041 | 42 | 11/16 | 1/8 | 1 | 1-5/16 | 7/16 | |
 | NRC-G-5042 | 43 | 3/4 | 1/8 | 1-1/16 | 1-3/8 | 7/16 | |
 | NRC-G-5043 | 44 | 3/4 | 1/8 | 1-7/16 | 1-13/16 | 7/16 | |
 | NRC-G-5044 | 45 | 7/8 | 1/8 | 1-1/4 | 1-5/8 | 1/2 | |
 | NRC-G-5045 | 46 | 1 | 1/8 | 1-3/8 | 1-3/4 | 1/2 | |
 | NRC-G-5046 | 47 | 1-1/2 | 1/8 | 1-3/4 | 2-1/8 | 1/2 | |
 | NRC-G-5047 | 48 | 1/8 | 3/16 | 1 | 1-1/4 | 3/8 | |
 | NRC-G-5048 | 49 | 3/16 | 3/16 | 5/16 | 7/16 | 5/16 | |
 | NRC-G-5049 | 50 | 1/4 | 3/16 | 7/16 | 5/8 | 5/16 | |
 | NRC-G-5050 | 51 | 1/4 | 3/16 | 1 | 1-1/4 | 3/8 | |
 | NRC-G-5051 | 52 | 5/16 | 3/16 | 9/16 | 13/16 | 7/16 | |
 | NRC-G-5052 | 53 | 5/16 | 3/16 | 3/4 | 1 | 7/16 | |
 | NRC-G-5053 | 54 | 3/8 | 3/16 | 5/8 | 7/8 | 7/16 | |
 | NRC-G-5054 | 55 | 7/16 | 3/16 | 11/16 | 15/16 | 7/16 | |
 | NRC-G-5055 | 56 | 1/2 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
 | NRC-G-5056 | 57 | 1/2 | 3/16 | 1-1/4 | 1-1/2 | 3/8 | |
 | NRC-G-5057 | 58 | 9/16 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
 | NRC-G-5058 | 59 | 5/8 | 3/16 | 7/8 | 1-1/8 | 7/16 | |
 | NRC-G-5059 | 60 | 5/8 | 3/16 | 1-1/4 | 1-1/2 | 3/8 | |
 | NRC-G-5060 | 61 | 11/16 | 3/16 | 1 | 1-5/16 | 1/2 | |
 | NRC-G-5061 | 62 | 3/4 | 3/16 | 1-1/16 | 1-3/8 | 1/2 | |
 | NRC-G-5062 | 63 | 7/8 | 3/16 | 1-1/4 | 1-5/8 | 9/16 | |
 | NRC-G-5063 | 64 | 1 | 3/16 | 1-3/8 | 1-3/4 | 9/16 | |
 | NRC-G-5064 | 65 | 1-1/2 | 3/16 | 1-3/4 | 2-1/8 | 9/16 | |
 | NRC-G-5065 | 66 | 1/8 | 1/4 | 1 | 1-1/4 | 7/16 | |
 | NRC-G-5066 | 67 | 3/16 | 1/4 | 5/16 | 7/16 | 3/8 | |
 | NRC-G-5067 | 68 | 1/4 | 1/4 | 7/16 | 5/8 | 3/8 | |
 | NRC-G-5068 | 69 | 1/4 | 1/4 | 1 | 1-1/4 | 7/16 | |
 | NRC-G-5069 | 70 | 5/16 | 1/4 | 9/16 | 13/16 | 1/2 | |
 | NRC-G-5070 | 71 | 5/16 | 1/4 | 3/4 | 1 | 1/2 | |
 | NRC-G-5071 | 72 | 3/8 | 1/4 | 5/8 | 7/8 | 1/2 | |
 | NRC-G-5072 | 73 | 7/16 | 1/4 | 11/16 | 15/16 | 1/2 | |
 | NRC-G-5073 | 74 | 1/2 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
 | NRC-G-5074 | 75 | 9/16 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
 | NRC-G-5075 | 76 | 5/8 | 1/4 | 7/8 | 1-1/8 | 1/2 | |
 | NRC-G-5076 | 77 | 11/16 | 1/4 | 1 | 1-5/16 | 9/16 | |
 | NRC-G-5077 | 78 | 3/4 | 1/4 | 1-1/16 | 1-3/8 | 9/16 | |
 | NRC-G-5078 | 79 | 7/8 | 1/4 | 1-1/4 | 1-5/8 | 5/8 | |
 | NRC-G-5079 | 80 | 1 | 1/4 | 1-3/8 | 1-3/4 | 5/8 | |
 | NRC-G-5080 | 81 | 1-1/2 | 1/4 | 1-3/4 | 2-1/8 | 5/8 |
All Other Grommets
Comprehensive selection of standard grommets for commercial, industrial, and consumer applications. Our quick grommet finder makes it easy to locate the right grommet based on your key dimensions.
How to Use the Grommet Finder
Select one or two key dimensions to find your grommet:
- • Inside Diameter: The hole size you need to protect
- • Groove Width: The width of the mounting groove
- • Groove Diameter: The diameter of the mounting surface
- • Outside Diameter: The overall grommet size
- • Thickness: The grommet wall thickness
Quick Grommet Finder
For your convenience, our grommets have been organized in columns for each of the key dimensions and arranged from small to large. Select your key dimensions, look in the appropriate column and you will find the remaining dimensions plus the part number listed. For additional information turn to the Part Number Index for the page on which that grommet is illustrated full scale, with a cut-away view. HOW TO USE One or two key dimensions dictate the choice of a grommet. This may be (A) inside diameter (B) width of groove (C) groove diameter (D) outside diameter (E) thickness
5 columns
| Image | Part No | Inside dia (A) | Groove width (B) | Groove dia (C) | Outside dia (D) | Thickness (E) | Add to Quote |
|---|---|---|---|---|---|---|---|
 | NRC-G-5081 | 7/64 | 3/64 | 1/2 | 11/16 | 9/32 | |
 | NRC-G-5082 | 1/8 | 1/32 | 3/16 | 1/4 | 3/32 | |
 | NRC-G-5083 | 1/8 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5084 | 1/8 | 1/16 | 1-1/4 | 1/4 | ||
 | NRC-G-5085 | 1/8 | 3/32 | 3/8 | 1/2 | 5/16 | |
 | NRC-G-5086 | 1/8 | 9/32 | 3/8 | 1/2 | 1/2 | |
 | NRC-G-5087 | 5/32 | 1/16 | 1/4 | 3/8 | 3/16 | |
 | NRC-G-5088 | 5/32 | 3/32 | 1/4 | 7/16 | 3/8 | |
 | NRC-G-5089 | 3/16 | 1/32 | 5/16 | 7/16 | 7/32 | |
 | NRC-G-5090 | 3/16 | 1/32 | 11/16 | 7/8 | 7/32 | |
 | NRC-G-5091 | 3/16 | 1/16 | 9/32 | 7/16 | 7/32 | |
| NRC-G-5092 | 3/16 | 1/16 | 5/16 | 7/16 | 3/16 | |
 | NRC-G-5093 | 3/16 | 1/16 | 5/16 | 1/2 | 1/4 | |
 | NRC-G-5094 | 3/16 | 1/16 | 9/16 | 3/4 | 3/16 | |
 | NRC-G-5095 | 3/16 | 3/32 | 9/32 | 7/16 | 7/32 | |
 | NRC-G-5096 | 3/16 | 3/32 | 11/32 | 5/8 | 3/8 | |
| NRC-G-5097 | 3/16 | 1/8 | 5/16 | 7/16 | 1/4 | |
| NRC-G-5098 | 3/16 | 3/16 | 5/16 | 7/16 | 5/16 | |
| NRC-G-5099 | 3/16 | 3/16 | 3/8 | 5/8 | 3/8 | |
| NRC-G-5100 | 3/16 | 1/4 | 5/16 | 7/16 | 3/8 | |
| NRC-G-5101 | 3/16 | 1/8 | 5/8 | 7/8 | 1/4 | |
 | NRC-G-5102 | 13/64 | 1/8 | 13/32 | 9/16 | 3/8 | |
 | NRC-G-5103 | 7/32 | 1/16 | 5/16 | 7/16 | 3/16 | |
 | NRC-G-5104 | 15/64 | 3/16 | 3/8 | 5/8 | 3/8 | |
 | NRC-G-5105 | 1/4 | 1/16 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5106 | 1/4 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5107 | 1/4 | 1/16 | 1-1/4 | 1/4 | ||
 | NRC-G-5108 | 1/4 | 3/32 | 3/8+ | 1/2 | 1/4 | |
 | NRC-G-5109 | 1/4 | 1/8 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5110 | 1/4 | 1/4 | 7/16 | 5/8 | 3/8 | |
 | NRC-G-5111 | 1/4 | 1/4 | 15/32 | 5/8 | 1/2 | |
| NRC-G-5112 | 1/4 | 1/8 | 7/16 | 5/8 | 1/4 | |
| NRC-G-5113 | 1/4 | 3/16 | 7/16 | 5/8 | 5/16 | |
 | NRC-G-5114 | 9/32 | 1/4 | 15/32 | 11/16 | 7/16 | |
 | NRC-G-5115 | 9/32 | 1/16 | 3/8 | 9/16 | 1/4 | |
 | NRC-G-5116 | 5/16 | 1/16 | 7/16 | 9/16 | 3/16 | |
 | NRC-G-5117 | 5/16 | 1/16 | 7/16 | 5/8 | 9/32 | |
| NRC-G-5118 | 5/16 | 1/16 | 9/16 | 13/16 | 5/16 | |
| NRC-G-5119 | 5/16 | 1/16 | 3/4 | 5/16 | ||
 | NRC-G-5120 | 5/16 | 3/32 | 7/16 | 5/8 | 5/16 | |
 | NRC-G-5121 | 5/16 | 3/32 | 15/32 | 3/4 | 11/32 | |
| NRC-G-5122 | 5/16 | 1/8 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5123 | 5/16 | 1/8 | 3/4 | 3/8 | ||
 | NRC-G-5124 | 5/16 | 3/16 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5125 | 5/16 | 3/16 | 9/16 | 13/16 | 7/16 | |
| NRC-G-5126 | 5/16 | 3/16 | 3/4 | 7/16 | ||
| NRC-G-5127 | 5/16 | 1/4 | 9/16 | 13/16 | 1/2 | |
| NRC-G-5128 | 5/16 | 1/4 | 3/4 | 1/2 | ||
 | NRC-G-5129 | 11/32 | 1/16 | 17/32 | 25/32 | 1/4 | |
 | NRC-G-5130 | 3/8 | 1/16 | 1/2 | 5/8 | 1/4 | |
 | NRC-G-5131 | 3/8 | 1/16 | 1/2 | 11/16 | 9/32 | |
| NRC-G-5132 | 3/8 | 1/16 | 5/8 | 7/8 | 5/16 | |
| NRC-G-5133 | 3/8 | 1/16 | 1-1/4 | 1/4 | ||
 | NRC-G-5134 | 3/8 | 3/16 | 9/16 | 13/16 | 3/8 | |
 | NRC-G-5135 | 3/8 | 1/4 | 1/2 | 3/4 | 1/2 | |
| NRC-G-5136 | 3/8 | 1/4 | 5/8 | 7/8 | 1/2 | |
 | NRC-G-5137 | 3/8 | 3/8 | 9/16 | 3/4 | 3/4 | |
| NRC-G-5138 | 3/8 | 1/8 | 5/8 | 7/8 | 3/8 | |
| NRC-G-5139 | 3/8 | 3/16 | 5/8 | 7/8 | 7/16 | |
 | NRC-G-5140 | 7/16 | 1/16 | 9/16 | 3/4 | 1/4 | |
| NRC-G-5141 | 7/16 | 1/16 | 11/16 | 15/16 | 5/16 | |
| NRC-G-5142 | 1/2 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
 | NRC-G-5143 | 1/2 | 1/16 | 1-1/4 | 1/4 | ||
| NRC-G-5144 | 1/2 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
 | NRC-G-5145 | 1/2 | 1/16 | 1-7/16 | 1-3/4 | 3/8 | |
 | NRC-G-5146 | 1/2 | 3/32 | 3/4 | 7/8 | 11/32 | |
 | NRC-G-5147 | 1/2 | 3/32 | 3/4 | 31/32 | 9/32 | |
 | NRC-G-5148 | 1/2 | 3/32 | 25/32 | 1-1/16 | 11/32 | |
 | NRC-G-5149 | 1/2 | 1/8 | 3/4 | 1/2 | ||
| NRC-G-5150 | 1/2 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
 | NRC-G-5151 | 1/2 | 3/8 | 3/4 | 5/8 | ||
| NRC-G-5152 | 1/2 | 1/8 | 13/16 | 1-1/16 | 3/8 | |
| NRC-G-5153 | 1/2 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
 | NRC-G-5154 | 9/16 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
 | NRC-G-5155 | 9/16 | 1/16 | 13/32 | 1-9/32 | 3/8 | |
 | NRC-G-5156 | 9/16 | 3/16 | 7/8 | 1-1/16 | 7/16 | |
| NRC-G-5157 | 9/16 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
 | NRC-G-5158 | 9/16 | 3/8 | 7/8 | 1-1/16 | 5/8 | |
 | NRC-G-5159 | 9/16 | 13/16 | 1-1/8 | 1 1/4 | ||
| NRC-G-5160 | 9/16 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
| NRC-G-5161 | 5/8 | 1/16 | 7/8 | 1-1/8 | 5/16 | |
| NRC-G-5162 | 5/8 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
 | NRC-G-5163 | 5/8 | 3/32 | 31/32 | 1-1/4 | 7/16 | |
| NRC-G-5164 | 5/8 | 1/8 | 7/8 | 1-1/8 | 3/8 | |
| NRC-G-5165 | 5/8 | 3/16 | 7/8 | 1-1/8 | 7/16 | |
| NRC-G-5166 | 5/8 | 1/4 | 7/8 | 1-1/8 | 1/2 | |
| NRC-G-5167 | 5/8 | 5/16 | 29/32 | 1-1/8 | 5/8 | |
 | NRC-G-5168 | 41/64 | 1/16 | 31/32 | 1-3/16 | 5/16 | |
 | NRC-G-5169 | 41/64 | 7/64 | 57/64 | 1-1/16 | 23/64 | |
| NRC-G-5170 | 11/16 | 1/16 | 1-5/16 | 3/8 | ||
| NRC-G-5171 | 11/16 | 1/8 | 1-5/16 | 7/16 | ||
 | NRC-G-5172 | 11/16 | 3/16 | 1-5/16 | 1/2 | ||
| NRC-G-5173 | 11/16 | 3/16 | 1-5/16 | 1/2 | ||
| NRC-G-5174 | 11/16 | 1/4 | 1-5/16 | 9/16 | ||
| NRC-G-5175 | 3/4 | 1/16 | 1-1/16 | 1-3/8 | 3/8 | |
 | NRC-G-5176 | 3/4 | 1/16 | 1-1/4 | 1-5/8 | 1/4 | |
| NRC-G-5177 | 3/4 | 1/16 | 1-7/16 | 1-13/16 | 3/8 | |
| NRC-G-5178 | 3/4 | 1/8 | 1-1/16 | 1-3/8 | 7/16 | |
 | NRC-G-5179 | 3/4 | 1//8 | 1-1/4 | 1-5/8 | 5/16 | |
| NRC-G-5180 | 3/4 | 3/16 | 1-1/16 | 1-3/8 | 1/2 | |
| NRC-G-5181 | 3/4 | 1/4 | 1-1/16 | 1-3/8 | 9/16 | |
 | NRC-G-5182 | 3/4 | 1/4 | 1-1/4 | 1-5/8 | 7/16 | |
 | NRC-G-5183 | 13/16 | 9/16 | 15/16 | 1-1/4 | 7/8 | |
| NRC-G-5184 | 7/8 | 1/16 | 1-1/4 | 1-5/8 | 7/16 | |
 | NRC-G-5185 | 7/8 | 1/16 | 1-5/8 | 7/16 | ||
 | NRC-G-5186 | 7/8 | 5/64 | 1-3/16 | 1-3/8 | 13/32 | |
| NRC-G-5187 | 7/8 | 1/8 | 1-1/4 | 1-5/8 | 1/2 | |
| NRC-G-5188 | 7/8 | 9/64 | 1-3/16 | 1-3/8 | 13/32 | |
| NRC-G-5189 | 7/8 | 3/16 | 1-1/4 | 1-5/8 | 9/16 | |
| NRC-G-5190 | 7/8 | 1/4 | 1-1/4 | 1-5/8 | 5/8 | |
| NRC-G-5191 | 1 | 1/16 | 1-3/8 | 1-3/4 | 7/16 | |
 | NRC-G-5192 | 1 | 1/16 | 1-7/8 | 2-1/4 | 7/16 | |
| NRC-G-5193 | 1 | 1/8 | 1-3/8 | 1-3/4 | 1/2 | |
| NRC-G-5194 | 1 | 3/16 | 1-3/8 | 1-3/4 | 9/16 | |
| NRC-G-5195 | 1 | 1/4 | 1-3/8 | 1-3/4 | 5/8 | |
 | NRC-G-5196 | 1 | 1/4 | 1-7/8 | 2-1/4 | 5/8 | |
 | NRC-G-5197 | 1-1/8 | 1/16 | 1-1/2 | 1-7/8 | 3/8 | |
 | NRC-G-5198 | 1-1/4 | 1/16 | 2-3/8 | 2-3/4 | 7/16 | |
 | NRC-G-5199 | 1-1/4 | 1/4 | 2-3/8 | 2-3/4 | 5/8 | |
 | NRC-G-5200 | 1-5/16 | 1/16 | 1-5/8 | 3/8 | ||
 | NRC-G-5201 | 1-5/16 | 1/8 | 1-5/8 | 7/16 | ||
| NRC-G-5202 | 1-1/2 | 1/16 | 1-3/4 | 2-1/8 | 7/16 | |
 | NRC-G-5203 | 1-1/2 | 1/4 | 1-3/4 | 1/2 | ||
| NRC-G-5204 | 1-1/2 | 1/4 | 1-3/4 | 2-1/8 | 5/8 | |
| NRC-G-5205 | 1-1/2 | 1/8 | 1-3/4 | 2-1/8 | 1/2 | |
| NRC-G-5206 | 1-1/2 | 3/16 | 1-3/4 | 2-1/8 | 9/16 | |
 | NRC-G-5207 | 2 | 3/32 | 3-5/32 | 3-5/8 | 9/32 | |
 | NRC-G-5208 | 2-1/8 | 1/16 | 2-1/2 | 2-7/8 | 7/16 | |
 | NRC-G-5209 | 2-1/8 | 1/8 | 2-1/2 | 2-7/8 | 7/16 | |
| NRC-G-5210 | 1/8 | 1/32 | 3/16 | 1/4 | 3/32 | |
| NRC-G-5211 | 3/16 | 1/32 | 5/16 | 7/16 | 7/32 | |
| NRC-G-5212 | 3/16 | 1/32 | 11/16 | 7/8 | 7/32 | |
| NRC-G-5213 | 7/64 | 3/64 | 1/2 | 11/16 | 9/32 | |
| NRC-G-5214 | 1/8 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5215 | 1/8 | 1/16 | 1-1/4 | 1/4 | ||
| NRC-G-5216 | 5/32 | 1/16 | 1/4 | 3/8 | 3/16 | |
| NRC-G-5217 | 3/16 | 1/16 | 9/32 | 7/16 | 7/32 | |
| NRC-G-5218 | 3/16 | 1/16 | 5/16 | 7/16 | 3/16 | |
| NRC-G-5219 | 3/16 | 1/16 | 5/16 | 1/2 | 1/4 | |
| NRC-G-5220 | 3/16 | 1/16 | 9/16 | 3/4 | 3/16 | |
| NRC-G-5221 | 7/32 | 1/16 | 5/16 | 7/16 | 3/16 | |
| NRC-G-5222 | 1/4 | 1/16 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5223 | 1/4 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5224 | 1/14 | 1/16 | 1-1/4 | 1/4 | ||
| NRC-G-5225 | 9/32 | 1/16 | 3/8 | 9/16 | 1/4 | |
| NRC-G-5226 | 5/16 | 1/16 | 7/16 | 9/16 | 3/16 | |
| NRC-G-5227 | 5/16 | 1/16 | 7/16 | 5/8 | 9/32 | |
| NRC-G-5228 | 5/16 | 1/16 | 9/16 | 13/16 | 5/16 | |
| NRC-G-5229 | 5/16 | 1/16 | 3/4 | 5/16 | ||
| NRC-G-5230 | 11/32 | 1/16 | 17/32 | 25/32 | 1/4 | |
| NRC-G-5231 | 3/8 | 1/16 | 1/2 | 5/8 | 1/4 | |
| NRC-G-5232 | 3/8 | 1/16 | 1/2 | 11/16 | 9/32 | |
| NRC-G-5233 | 3/8 | 1/16 | 5/8 | 7/8 | 5/16 | |
| NRC-G-5234 | 3/8 | 1/16 | 1-1/4 | 1/4 | ||
| NRC-G-5235 | 1/21 | 1/16 | 9/16 | 3/4 | 1/4 | |
| NRC-G-5236 | 7/16 | 1/16 | 11/16 | 15/16 | 5/16 | |
| NRC-G-5237 | 1/2 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
| NRC-G-5238 | 1/2 | 1/16 | 1-1/4 | 1/4 | ||
| NRC-G-5239 | 1/2 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
| NRC-G-5240 | 1/2 | 1/16 | 1-7/16 | 1-3/4 | 3/8 | |
| NRC-G-5241 | 9/16 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
| NRC-G-5242 | 9/16 | 1/16 | 1-3/32 | 1-9/32 | 3/8 | |
| NRC-G-5243 | 5/8 | 1/16 | 7/8 | 1-1/8 | 5/16 | |
| NRC-G-5244 | 5/8 | 1/16 | 1-1/4 | 1-1/2 | 1/4 | |
| NRC-G-5245 | 41/64 | 1/16 | 31/32 | 1-3/16 | 5/16 | |
| NRC-G-5246 | 11/16 | 1/16 | 1-5/16 | 3/8 | ||
| NRC-G-5247 | 3/4 | 1/16 | 1-1/16 | 1-3/8 | 3/8 | |
| NRC-G-5248 | 3/4 | 1/16 | 1-1/4 | 1-5/8 | 1/4 | |
| NRC-G-5249 | 3/4 | 1/16 | 1-7/16 | 1-13/16 | 3/8 | |
| NRC-G-5250 | 7/8 | 1/16 | 1-1/4 | 1-5/8 | 7/16 | |
| NRC-G-5251 | 7/8 | 1/16 | 1-5/8 | 7/16 | ||
| NRC-G-5252 | 1 | 1/16 | 1-3/8 | 1-3/4 | 7/16 | |
| NRC-G-5253 | 1 | 1/16 | 1-7/8 | 2-1/4 | 7/16 | |
| NRC-G-5254 | 1-1/8 | 1/16 | 1-1/2 | 1-7/8 | 3/8 | |
| NRC-G-5255 | 1-1/4 | 1/16 | 2-3/8 | 2-3/4 | 7/16 | |
| NRC-G-5256 | 1-5/16 | 1/16 | 1-5/8 | 3/8 | ||
| NRC-G-5257 | 1-1/2 | 1/16 | 1-3/4 | 2-1/8 | 7/16 | |
| NRC-G-5258 | 2-1/8 | 1/16 | 2-1/2 | 2-7/8 | 7/16 | |
| NRC-G-5259 | 7/8 | 5/64 | 1-3/16 | 1-3/8 | 13/32 | |
| NRC-G-5260 | 1/8 | 3/32 | 3/8 | 1/2 | 5/16 | |
| NRC-G-5261 | 5/32 | 3/32 | 1/4 | 7/16 | 3/8 | |
| NRC-G-5262 | 3/16 | 3/32 | 9/32 | 7/16 | 7/32 | |
| NRC-G-5263 | 3/16 | 3/32 | 11/32 | 5/8 | 3/8 | |
| NRC-G-5264 | 1/4 | 3/32 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5265 | 5/16 | 3/32 | 7/16 | 5/8 | 5/16 | |
| NRC-G-5266 | 5/16 | 3/32 | 15/32 | 3/4 | 11/32 | |
| NRC-G-5267 | 1/2 | 3/32 | 3/4 | 7/8 | 11/32 | |
| NRC-G-5268 | 1/2 | 3/32 | 3/4 | 31/32 | 9/32 | |
| NRC-G-5269 | 1/2 | 3/32 | 25/32 | 1-1/16 | 11/32 | |
| NRC-G-5270 | 5/8 | 3/32 | 31/32 | 1-1/4 | 7/16 | |
| NRC-G-5271 | 2 | 3/32 | 3-5/32 | 3-5/8 | 9/32 | |
| NRC-G-5272 | 41/64 | 7/64 | 57/64 | 1-1/16 | 23/64 | |
| NRC-G-5273 | 3/16 | 1/8 | 5/16 | 7/16 | 1/4 | |
| NRC-G-5274 | 13/64 | 1/8 | 13/32 | 9/16 | 3/8 | |
| NRC-G-5275 | 1/4 | 1/8 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5276 | 5/16 | 1/8 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5277 | 5/16 | 1/8 | 3/4 | 3/8 | ||
| NRC-G-5278 | 1/2 | 1/8 | 3/4 | 1/2 | ||
| NRC-G-5279 | 5/8 | 1/8 | 7/8 | 1-1/8 | 3/8 | |
| NRC-G-5280 | 11/16 | 1/8 | 1-5/16 | 7/16 | ||
| NRC-G-5281 | 3/4 | 1/8 | 1-1/16 | 1-3/8 | 7/16 | |
| NRC-G-5282 | 3/4 | 1/8 | 1-1/4 | 1-5/8 | 5/16 | |
| NRC-G-5283 | 7/8 | 1/8 | 1-1/4 | 1-5/8 | 1/2 | |
| NRC-G-5284 | 1 | 1/8 | 1-3/8 | 1-3/4 | 1/2 | |
| NRC-G-5285 | 1-5/16 | 1/8 | 1-5/8 | 7/16 | ||
| NRC-G-5286 | 2-1/8 | 1/8 | 2-1/2 | 2-7/8 | 7/16 | |
| NRC-G-5287 | 3/16 | 1/8 | 5/8 | 7/8 | 1/4 | |
| NRC-G-5288 | 1/4 | 1/8 | 7/16 | 5/8 | 1/4 | |
| NRC-G-5289 | 3/8 | 1/8 | 5/8 | 7/8 | 3/8 | |
| NRC-G-5290 | 1/2 | 1/8 | 13/16 | 1-1/16 | 3/8 | |
| NRC-G-5291 | 1-1/2 | 1/8 | 1-3/4 | 2-1/8 | 1/2 | |
| NRC-G-5292 | 7/8 | 9/64 | 1-3/16 | 1-3/8 | 13/32 | |
| NRC-G-5293 | 3/16 | 3/16 | 5/16 | 7/16 | 5/16 | |
| NRC-G-5294 | 3/16 | 3/16 | 3/8 | 5/8 | 3/8 | |
 | NRC-G-5295 | 15/64 | 3/16 | 3/8 | 5/8 | 3/8 | |
| NRC-G-5296 | 5/16 | 3/16 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5297 | 5/16 | 3/16 | 9/16 | 13/16 | 7/16 | |
| NRC-G-5298 | 5/16 | 3/16 | 3/4 | 7/16 | ||
| NRC-G-5299 | 3/8 | 3/16 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5300 | 9/16 | 3/16 | 7/8 | 1-1/16 | 7/16 | |
| NRC-G-5301 | 5/8 | 3/16 | 7/8 | 1-1/8 | 7/16 | |
| NRC-G-5302 | 11/16 | 3/16 | 1-5/16 | 1/2 | ||
| NRC-G-5303 | 11/16 | 3/16 | 1-5/16 | 1/2 | ||
| NRC-G-5304 | 3/4 | 3/16 | 1-1/16 | 1-3/8 | 1/2 | |
| NRC-G-5305 | 7/8 | 3/16 | 1-1/4 | 1-5/8 | 9/16 | |
| NRC-G-5306 | 1 | 3/16 | 1-3/8 | 1-3/4 | 9/16 | |
| NRC-G-5307 | 1/4 | 3/16 | 7/16 | 5/8 | 5/16 | |
| NRC-G-5308 | 3/8 | 3/16 | 5/8 | 7/8 | 7/16 | |
| NRC-G-5309 | 1/2 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
| NRC-G-5310 | 9/16 | 3/16 | 13/16 | 1-1/16 | 7/16 | |
| NRC-G-5311 | 1-1/2 | 3/16 | 1-3/4 | 2-1//8 | 9/16 | |
| NRC-G-5312 | 3/16 | 1/4 | 5/16 | 7/16 | 3/8 | |
| NRC-G-5313 | 1/4 | 1/4 | 7/16 | 5/8 | 3/8 | |
| NRC-G-5314 | 1/4 | 1/4 | 15/32 | 5/8 | 1/2 | |
| NRC-G-5315 | 9/32 | 1/4 | 15/32 | 11/16 | 7/16 | |
| NRC-G-5316 | 5/16 | 1/4 | 9/16 | 13/16 | 1/2 | |
| NRC-G-5317 | 5/16 | 1/4 | 3/4 | 1/2 | ||
| NRC-G-5318 | 3/8 | 1/4 | 1/2 | 3/4 | 1/2 | |
| NRC-G-5319 | 3/8 | 1/4 | 5/8 | 7/8 | 1/2 | |
| NRC-G-5320 | 1/2 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
| NRC-G-5321 | 9/16 | 1/4 | 13/16 | 1-1/16 | 1/2 | |
| NRC-G-5322 | 5/8 | 1/4 | 7/8 | 1-1/8 | 1/2 | |
| NRC-G-5323 | 11/16 | 1/4 | 1-5/16 | 9/16 | ||
| NRC-G-5324 | 3/4 | 1/4 | 1-1/16 | 1-3/8 | 9/16 | |
| NRC-G-5325 | 3/4 | 1/4 | 1-1/4 | 1-5/8 | 7/16 | |
| NRC-G-5326 | 7/8 | 1/4 | 1-1/4 | 1-5/8 | 5/8 | |
| NRC-G-5327 | 1 | 1/4 | 1-3/8 | 1-3/4 | 5/8 | |
| NRC-G-5328 | 1 | 1/4 | 1-7/8 | 2-1/4 | 5/8 | |
| NRC-G-5329 | 1-1/4 | 1/4 | 2-3/8 | 2-3/4 | 5/8 | |
| NRC-G-5330 | 1-1/2 | 1/4 | 1-3/4 | 1/2 | ||
| NRC-G-5331 | 1-1/2 | 1/4 | 1-3/4 | 2-1/8 | 5/8 | |
| NRC-G-5332 | 1/8 | 9/32 | 3/8 | 1/2 | 1/2 | |
| NRC-G-5333 | 5/8 | 5/16 | 29/32 | 1-1/8 | 5/8 | |
| NRC-G-5334 | 3/8 | 3/8 | 9/16 | 3/4 | 3/4 | |
| NRC-G-5335 | 1/2 | 3/8 | 3/4 | 5/8 | ||
| NRC-G-5336 | 9/16 | 3/8 | 7/8 | 1-1/16 | 5/8 | |
| NRC-G-5337 | 13/16 | 9/16 | 15/16 | 1-1/4 | 7/8 | |
| NRC-G-5338 | 9/16 | 13/16 | 1-1/8 | 1-1/4 | ||
| NRC-G-5339 | 1/8 | 1/32 | 3/16 | 1/4 | 3/32 | |
| NRC-G-5340 | 5/32 | 1/16 | 1/4 | 3/8 | 3/16 | |
| NRC-G-5341 | 5/32 | 3/32 | 1/4 | 7/16 | 3/8 | |
| NRC-G-5342 | 3/16 | 1/16 | 9/32 | 7/16 | 7/32 | |
| NRC-G-5343 | 3/16 | 3/32 | 9/32 | 7/16 | 7/32 | |
| NRC-G-5344 | 3/16 | 1/32 | 5/16 | 7/16 | 7/32 | |
| NRC-G-5345 | 3/16 | 1/16 | 5/16 | 7/16 | 3/16 | |
| NRC-G-5346 | 3/16 | 1/16 | 5/16 | 1/2 | 1/4 | |
| NRC-G-5347 | 3/16 | 1/8 | 5/16 | 7/16 | 1/4 | |
| NRC-G-5348 | 3/16 | 3/16 | 5/16 | 7/16 | 5/16 | |
| NRC-G-5349 | 3/16 | 1/4 | 5/16 | 7/16 | 3/8 | |
| NRC-G-5350 | 7/32 | 1/16 | 5/16 | 7/16 | 3/16 | |
| NRC-G-5351 | 3/16 | 3/32 | 11/32 | 5/8 | 3/8 | |
| NRC-G-5352 | 1/8 | 3/32 | 3/8 | 1/2 | 5/16 | |
| NRC-G-5353 | 1/8 | 9/32 | 3/8 | 1/2 | 1/2 | |
| NRC-G-5354 | 3/16 | 3/16 | 3/8 | 5/8 | 3/8 | |
| NRC-G-5355 | 15/64 | 3/16 | 3/8 | 5/8 | 3/8 | |
| NRC-G-5356 | 1/4 | 1/16 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5357 | 1/4 | 3/32 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5358 | 1/4 | 1/8 | 3/8+ | 1/2 | 1/4 | |
| NRC-G-5359 | 9/32 | 1/16 | 3/8 | 9/16 | 1/4 | |
| NRC-G-5360 | 13/64 | 1/8 | 13/32 | 9/16 | 3/8 | |
| NRC-G-5361 | 1/8 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5362 | 1/4 | 1/16 | 7/16 | 5/8 | 3/16 | |
| NRC-G-5363 | 1/4 | 1/4 | 7/16 | 5/8 | 3/8 | |
| NRC-G-5364 | 5/16 | 1/16 | 7/16 | 9/16 | 3/16 | |
| NRC-G-5365 | 5/16 | 1/16 | 7/16 | 5/8 | 9/32 | |
| NRC-G-5366 | 5/16 | 3/32 | 7/16 | 5/8 | 5/16 | |
| NRC-G-5367 | 1/4 | 1/8 | 7/16 | 5/8 | 1/4 | |
| NRC-G-5368 | 1/4 | 3/16 | 7/16 | 5/8 | 5/16 | |
| NRC-G-5369 | 1/4 | 1/4 | 15/32 | 5/8 | 1/2 | |
| NRC-G-5370 | 9/32 | 1/4 | 15/32 | 11/16 | 7/16 | |
| NRC-G-5371 | 5/16 | 3/32 | 15/32 | 3/4 | 11/32 | |
| NRC-G-5372 | 7/64 | 3/64 | 1/2 | 11/16 | 9/32 | |
| NRC-G-5373 | 3/8 | 1/16 | 1/2 | 5/8 | 1/4 | |
| NRC-G-5374 | 3/8 | 1/16 | 1/2 | 11/16 | 9/32 | |
| NRC-G-5375 | 3/8 | 1/4 | 1/2 | 3/4 | 1/2 | |
| NRC-G-5376 | 11/32 | 1/16 | 17/32 | 25/32 | 1/4 | |
| NRC-G-5377 | 3/16 | 1/16 | 9/16 | 3/4 | 3/16 | |
| NRC-G-5378 | 5/16 | 1/16 | 9/16 | 13/16 | 5/16 | |
| NRC-G-5379 | 5/16 | 1/8 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5380 | 5/16 | 3/16 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5381 | 5/16 | 3/16 | 9/16 | 13/16 | 7/16 | |
| NRC-G-5382 | 5/16 | 1/4 | 9/16 | 13/16 | 1/2 | |
| NRC-G-5383 | 3/8 | 3/16 | 9/16 | 13/16 | 3/8 | |
| NRC-G-5384 | 3/8 | 3/8 | 9/16 | 3/4 | 3/4 | |
| NRC-G-5385 | 7/16 | 1/16 | 9/16 | 3/4 | 1/4 | |
| NRC-G-5386 | 3/8 | 1/16 | 5/8 | 7/8 | 5/16 | |
| NRC-G-5387 | 3/8 | 1/4 | 5/8 | 7/8 | 1/2 | |
| NRC-G-5388 | 3/16 | 1/8 | 5/8 | 7/8 | 1/4 | |
| NRC-G-5389 | 3/8 | 1/8 | 5/8 | 7/8 | 3/8 | |
| NRC-G-5390 | 3/8 | 3/16 | 5/8 | 7/8 | 7/16 | |
| NRC-G-5391 | 3/16 | 1/32 | 11/16 | 7/8 | 7/32 | |
| NRC-G-5392 | 7/16 | 1/16 | 11/16 | 15/16 | 5/16 | |
| NRC-G-5393 | 5/16 | 1/16 | 3/4 | 5/16 | ||
| NRC-G-5394 | 5/16 | 1/8 | 3/4 | 3/8 | ||
| NRC-G-5395 | 5/16 | 3/16 | 3/4 | 7/16 | ||
| NRC-G-5396 | 5/16 | 1/4 | 3/4 | 1/2 | ||
| NRC-G-5397 | 1/2 | 3/32 | 3/4 | 7/8 | 11/32 | |
| NRC-G-5398 | 1/2 | 3/32 | 3/4 | 31/32 | 9/32 | |
| NRC-G-5399 | 1/2 | 1/8 | 3/4 | 1/2 | ||
| NRC-G-5400 | 1/2 | 3/8 | 3/4 | 5/8 | ||
| NRC-G-5401 | 1/2 | 3/32 | 25/32 | 1-1/16 | 11/32 | |
| NRC-G-5402 | 1/2 | 1/16 | 13/16 | 1-1/16 | 5/16 | |
| NRC-G-5403 | 1/2 | 1/4 | 13/16 | 1-1/16 | 1/2 |
Grommet Selection Guide
How to Measure for Grommets
Panel Thickness:
Measure the thickness of the panel where the grommet will be installed. This determines the grommet's overall length.
Hole Diameter:
Measure the diameter of the hole that needs protection. This is the grommet's inside diameter.
Wire/Cable Size:
Consider the diameter of the wires or cables passing through. The grommet should provide adequate clearance without being too loose.
Material Selection Guidance
EPDM:
Best for outdoor applications, weather-resistant, good UV stability.
Neoprene:
Excellent oil resistance, moderate temperature range, good compression set.
Silicone:
High-temperature applications, FDA-compliant options available.
Installation Tips
- Clean the mounting surface thoroughly before installation
- Use appropriate lubricants if needed for tight fits
- Ensure proper alignment to avoid twisting or deformation
- Test fit before final installation
- Consider thermal expansion in high-temperature applications
Custom Grommet Manufacturing
Don't see the grommet you need in our catalog? Our custom manufacturing capabilities allow us to create grommets tailored to your exact specifications. Whether you need special dimensions, unique materials, or custom colors, we can develop the perfect solution for your application.