High-Temperature Silicone O-Ring Cord Stock

Use this silicone cord stock to create O-rings for high-temperature applications up to 400° F. It has a round profile, which makes it suitable for a wide range of static and dynamic sealing applications.
Wd. | |||||||
|---|---|---|---|---|---|---|---|
| Fractional | Actual | Specifications Met | Temperature Range, °F | Color | Lengths, ft. | Per Ft. | |
| 1/16 | 0.07" | ASTM D2000 | -60° to 400° | Red | 96505K21 | 00000 | |
| 3/32 | 0.103" | ASTM D2000 | -60° to 400° | Red | 96505K22 | 000 | |
| 1/8 | 0.139" | ASTM D2000 | -60° to 400° | Red | 96505K23 | 000 | |
| 3/16 | 0.21" | ASTM D2000 | -60° to 400° | Red | 96505K24 | 0000 | |
| 1/4 | 0.275" | ASTM D2000 | -60° to 400° | Red | 96505K25 | 0000 | |
| 5/16 | 0.313" | ASTM D2000 | -60° to 400° | Red | 96505K26 | 0000 | |
| 3/8 | 0.375" | ASTM D2000 | -60° to 400° | Red | 96505K27 | 0000 | |
| 7/16 | 0.437" | ASTM D2000 | -60° to 400° | Red | 96505K47 | 0000 | |
| 1/2 | 0.5" | ASTM D2000 | -60° to 400° | Red | 96505K28 | 0000 | |
| 5/8 | 0.625" | ASTM D2000 | -60° to 400° | Red | 96505K48 | 0000 | |
| 3/4 | 0.75" | ASTM D2000 | -60° to 400° | Red | 96505K29 | 0000 | |
| Wd., mm | Specifications Met | Temperature Range, °F | Color | Lengths, ft. | Per Ft. | |
| 1.5 | ASTM D2000 | -60° to 400° | Red | 1187N11 | 00000 | |
| 2 | ASTM D2000 | -60° to 400° | Red | 1187N12 | 000 | |
| 2.5 | ASTM D2000 | -60° to 400° | Red | 1187N13 | 000 | |
| 3 | ASTM D2000 | -60° to 400° | Red | 1187N14 | 000 | |
| 3.5 | ASTM D2000 | -60° to 400° | Red | 1187N15 | 000 | |
| 4 | ASTM D2000 | -60° to 400° | Red | 1187N16 | 000 | |
| 4.5 | ASTM D2000 | -60° to 400° | Red | 1187N17 | 000 | |
| 5 | ASTM D2000 | -60° to 400° | Red | 1187N18 | 0000 | |
| 5.5 | ASTM D2000 | -60° to 400° | Red | 1187N19 | 0000 | |
| 6 | ASTM D2000 | -60° to 400° | Red | 1187N21 | 0000 |
Metal-Detectable High-Temperature Silicone O-Ring Cord Stock
Create round-profile O-rings for sealing applications near ovens and other hot areas in your food plant. Made from silicone, this cord stock holds up to high heat, and won’t degrade from water, oil, and detergents. It also contains a metal additive that will set off metal detectors if it falls into your line, so contaminated food doesn’t leave your facility. The red color is easy to spot, so you can quickly find and remove any pieces from your line. This cord stock helps you comply with Hazard Analysis and Critical Control Point (HACCP) programs. It’s FDA compliant, so it’s safe for direct contact with food. It also meets ASTM D2000, which is a performance standard for rubber used in automotive applications.
Wd. | ||||||||
|---|---|---|---|---|---|---|---|---|
| Fractional | Actual | Hardness | Specifications Met | Temperature Range, °F | Color | Lengths, ft. | Per Ft. | |
| 1/16 | 0.07" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N893 | 00000 | |
| 3/32 | 0.103" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N897 | 0000 | |
| 1/8 | 0.139" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N899 | 0000 | |
| 3/16 | 0.21" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N995 | 0000 | |
| 1/4 | 0.275" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N886 | 00000 | |
| 3/8 | 0.375" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N891 | 00000 | |
| 1/2 | 0.5" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N892 | 00000 | |
| Wd., mm | Hardness | Specifications Met | Temperature Range, °F | Color | Lengths, ft. | Per Ft. | |
| 2 | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N885 | 00000 | |
| 3 | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N895 | 0000 | |
| 4 | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N898 | 0000 | |
| 5 | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N902 | 0000 | |
| 6 | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 450° | Red | 6929N906 | 0000 |
High-Temperature Soft Silicone Cord Stock


Easier to compress than standard silicone cord stock, this cord stock creates a better seal on uneven surfaces. However, it’s less wear resistant. It withstands temperatures as low as -60° F and as high as 400° F. This cord stock is FDA compliant for direct contact with food, so it’s often used to seal food processing lines and freezer doors.
Make-your-own O-ring kits (sold separately) include everything you need to cut and bond this cord stock.
Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Wd. | Wd. Tolerance Range | Hardness | ARPM Tolerance | Specifications Met | Temperature Range, °F | Choose a Color | Lengths, ft. | 1-99 | 100-Up | |
| 0.04" | -0.010" to 0.010" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T11 | 00000 | 00000 | ||
| 0.063" | -0.014" to 0.014" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T12 | 000 | 000 | ||
| 0.07" | -0.014" to 0.014" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T13 | 000 | 000 | ||
| 0.094" | -0.014" to 0.014" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T14 | 000 | 000 | ||
| 0.103" | -0.016" to 0.016" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T15 | 000 | 000 | ||
| 0.125" | -0.016" to 0.016" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T16 | 000 | 000 | ||
| 0.139" | -0.016" to 0.016" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T17 | 000 | 000 | ||
| 0.187" | -0.020" to 0.020" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T18 | 000 | 000 | ||
| 0.21" | -0.020" to 0.020" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T71 | 0000 | 000 | ||
| 0.25" | -0.020" to 0.020" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T72 | 0000 | 0000 | ||
| 0.275" | -0.027" to 0.027" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T73 | 0000 | 0000 | ||
| 0.313" | -0.027" to 0.027" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T74 | 0000 | 0000 | ||
| 0.375" | -0.027" to 0.027" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T75 | 0000 | 0000 | ||
| 0.437" | -0.031" to 0.031" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T76 | 0000 | 0000 | ||
| 0.5" | -0.031" to 0.031" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T77 | 0000 | 0000 | ||
| 0.625" | -0.031" to 0.031" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T78 | 0000 | 0000 | ||
| 0.75" | -0.039" to 0.039" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T79 | 0000 | 0000 | ||
| 1" | -0.051" to 0.051" | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 5229T81 | 00000 | 00000 | ||
Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Wd., mm | Wd. Tolerance Range, mm | Hardness | ARPM Tolerance | Specifications Met | Temperature Range, °F | Choose a Color | Lengths, ft. | 1-99 | 100-Up | |
| 1 | -0.250 to 0.250 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N11 | 00000 | 00000 | ||
| 2 | -0.350 to 0.350 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N12 | 000 | 000 | ||
| 3 | -0.400 to 0.400 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N13 | 000 | 000 | ||
| 4 | -0.400 to 0.400 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N14 | 000 | 000 | ||
| 5 | -0.500 to 0.500 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N15 | 0000 | 0000 | ||
| 6 | -0.500 to 0.500 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N16 | 0000 | 0000 | ||
| 7 | -0.700 to 0.700 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N17 | 0000 | 0000 | ||
| 8 | -0.700 to 0.700 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N18 | 0000 | 0000 | ||
| 9 | -0.700 to 0.700 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N19 | 0000 | 0000 | ||
| 10 | -0.700 to 0.700 | Durometer 50A (Soft) | E2 Precision | ASTM D2000, FDA Compliant 21 CFR 177.2600 | -60° to 400° | 9328N21 | 0000 | 0000 | ||
| System of Measurement | Includes | Each | |
| Inch | 180 W Heating Element 4" × 4" sheet of silicone adhesive for bonding silicone cord stock Cutting Tool Die Precision Mold | 9450K105 | 000000000 |
| Metric | 180 W Heating Element 4" × 4" sheet of silicone adhesive for bonding silicone cord stock Cutting Tool Die Precision Mold | 9450K106 | 00000000 |
| Inch/Metric | 180 W Heating Element 4" × 4" sheet of silicone adhesive for bonding silicone cord stock Cutting Tool Die Precision Mold | 9450K107 | 00000000 |
Square-Profile High-Temperature Silicone O-Ring Cord Stock

This square-profile silicone cord stock has flat edges on all four sides, which creates a better seal than round profile in static applications, such as hose, pipe, and faucet connections. It withstands temperatures up to 400° F.
Wd. | ||||||||
|---|---|---|---|---|---|---|---|---|
| Fractional | Actual | Hardness | Specifications Met | Temperature Range, °F | Color | Lengths, ft. | Per Ft. | |
| 1/16 | 0.07" | Durometer 70A (Medium) | ASTM D2000 | -60° to 400° | Red | 1177N11 | 00000 | |
| 3/32 | 0.103" | Durometer 70A (Medium) | ASTM D2000 | -60° to 400° | Red | 1177N15 | 0000 | |
| 1/8 | 0.139" | Durometer 70A (Medium) | ASTM D2000 | -60° to 400° | Red | 1177N13 | 0000 | |
| 3/16 | 0.21" | Durometer 70A (Medium) | ASTM D2000 | -60° to 400° | Red | 1177N14 | 0000 | |
| 1/4 | 0.275" | Durometer 70A (Medium) | ASTM D2000 | -60° to 400° | Red | 1177N12 | 0000 | |
Food Industry High-Temperature Silicone Rubber Rods
- Color: Red or White
- Temperature Range: -65° to 400° F
- Tensile Strength: Red: 650 psi; White: 900 psi
- For Use Outdoors: Yes
FDA compliant for use with food and beverage, these rods fit into channels and other narrow spaces for sealing and cushioning. Some also meet NSF/ANSI 51 for food contact. All are made of silicone—commonly called polysiloxane—which offers good resistance to ozone and salt water.
36" Lg. | ||||
|---|---|---|---|---|
| Dia. | Dia. Tolerance | Choose a Durometer | Each | |
Red—FDA Compliant | ||||
| 1/8" | -0.027" to +0.027" | 9808K21 | 000000 | |
| 1/4" | -0.031" to +0.031" | 9808K22 | 00000 | |
| 3/8" | -0.039" to +0.039" | 9808K23 | 00000 | |
| 1/2" | -0.051" to +0.051" | 9808K24 | 00000 | |
| 3/4" | -0.063" to +0.063" | 9808K25 | 00000 | |
| 1" | -0.079" to +0.079" | 9808K26 | 00000 | |
White—NSF/ANSI 51, FDA Compliant | ||||
| 1/8" | -0.027" to +0.027" | 50A (Medium) | 4714N111 | 00000 |
| 1/4" | -0.039" to +0.039" | 50A (Medium) | 4714N112 | 00000 |
| 3/8" | -0.039" to +0.039" | 50A (Medium) | 4714N113 | 00000 |
| 1/2" | -0.051" to +0.051" | 50A (Medium) | 4714N114 | 00000 |
| 3/4" | -0.063" to +0.063" | 50A (Medium) | 4714N115 | 00000 |
| 1" | -0.079" to +0.079" | 50A (Medium) | 4714N116 | 00000 |
High-Temperature Silicone Rubber Rods
- Color: Black or Red
- Temperature Range: See table
- Tensile Strength: See table
- For Use Outdoors: Yes
Seal and cushion channels in environments up to 450° F. These silicone rods are a good choice for use on hot equipment where polyurethane ones may melt. Not only do they endure oven-level heat but also sub-zero cold. It’s no wonder they’re often used in aviation, where scorching takeoffs are followed by freezing cold at high altitude. As for earthbound applications, these rods make good insulators for windows and car parts. They resist water, sunlight, and ozone, so you can use them outdoors.
| Dia. | Dia. Tolerance | Temp. Range, °F | Tensile Strength, psi | Durometer | Per Ft. | |
Black | ||||||
|---|---|---|---|---|---|---|
| 1/16" | -0.014" to +0.014" | -100 to 400° | 350 | 20A (Soft) | 1249N21 | 00000 |
| 1/8" | -0.016" to +0.016" | -100 to 400° | 350 | 20A (Soft) | 1249N11 | 0000 |
| 1/4" | 0.000" to +0.040" | -100 to 400° | 350 | 20A (Soft) | 1249N12 | 0000 |
| 3/8" | -0.039" to +0.039" | -100 to 400° | 350 | 20A (Soft) | 1249N13 | 0000 |
| 1/2" | -0.051" to +0.051" | -100 to 400° | 350 | 20A (Soft) | 1249N14 | 00000 |
| 3/4" | -0.063" to +0.063" | -100 to 400° | 350 | 20A (Soft) | 1249N31 | 00000 |
Red | ||||||
| 1/16" | -0.010" to +0.010" | -80 to 450° | 725 | 50A (Medium) | 1249N22 | 0000 |
| 1/8" | -0.010" to +0.010" | -65 to 400° | 870 | 70A (Hard) | 1249N23 | 0000 |
| 1/4" | -0.007" to +0.009" | -65 to 400° | 870 | 70A (Hard) | 1249N24 | 0000 |
| 1 1/4" | -0.079" to +0.079" | -60 to 420° | 650 | 40A (Medium Soft) | 1246N11 | 00000 |
High-Strength High-Temperature Silicone Rubber Rods
- Color: Red
- Temperature Range: -90° to 400° F
- Tensile Strength: 1,200 psi
- For Use Outdoors: Yes
Stronger than standard high-temperature silicone rods, these rods are longer lasting and more shock absorbent. Use them to seal and cushion channels and other narrow spaces. Made of silicone—commonly known as polysiloxane—they have good resistance to ozone and salt water.
3 ft. Lg. | 6 ft. Lg. | ||||||
|---|---|---|---|---|---|---|---|
| Diameter | Diameter Tolerance | Durometer | Specifications Met | Each | Each | ||
| 1/8" | -0.027" to +0.027" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N111 | 00000 | 7410N112 | 000000 |
| 1/4" | -0.039" to +0.039" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N113 | 00000 | 7410N114 | 00000 |
| 3/8" | -0.039" to +0.039" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N115 | 00000 | 7410N116 | 00000 |
| 1/2" | -0.051" to +0.051" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N117 | 00000 | 7410N118 | 00000 |
| 3/4" | -0.063" to +0.063" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N119 | 00000 | 7410N121 | 00000 |
| 1" | -0.079" to +0.079" | 50A (Medium) | ASTM D2000 M GE 505 | 7410N122 | 00000 | 7410N123 | 000000 |
Fire-Retardant High-Temperature Silicone Rubber Rods
- Color: Black
- Temperature Range: -85° to 400° F
- Tensile Strength: 700 psi
- For Use Outdoors: Yes
Meeting UL 94 V-0, these rods are flame retardant—use them to seal and cushion narrow spaces. They’re made of silicone, which is often called polysiloxane, so they have good resistance to ozone and salt water.
| Diameter | Diameter Tolerance | Durometer | Specifications Met | Each | |
3 ft. Lg. | |||||
|---|---|---|---|---|---|
| 1/8" | -0.027" to +0.027" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N111 | 00000 |
| 1/4" | -0.039" to +0.039" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N113 | 00000 |
| 3/8" | -0.039" to +0.039" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N115 | 00000 |
| 1/2" | -0.051" to +0.051" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N117 | 00000 |
| 3/4" | -0.063" to +0.063" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N119 | 00000 |
| 1" | -0.079" to +0.079" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N122 | 00000 |
6 ft. Lg. | |||||
| 1/8" | -0.027" to +0.027" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N112 | 00000 |
| 1/4" | -0.039" to +0.039" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N114 | 00000 |
| 3/8" | -0.039" to +0.039" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N116 | 00000 |
| 1/2" | -0.051" to +0.051" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N118 | 00000 |
| 3/4" | -0.063" to +0.063" | 60A (Medium Hard) | ASTM D2000 M GE 605, UL 94 V-0 | 7250N121 | 00000 |


























