High Temperature O-rings

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2,026 Products

About O-Rings

High-Temperature Parker S1138 Silicone O-Rings

Use these O-rings in temperatures up to 400° F. Made of Parker S1138 silicone, they’re pure enough for food or pharmaceutical applications—they’re USP VI certified.

High-Temperature Silicone O-Rings

Made of silicone, these O-rings can withstand temperatures up to 400° F or higher. They're FDA compliant for direct contact with food, so they're often used on hot food lines.

High-Temperature Soft Silicone O-Rings

Easier to compress than standard silicone O-rings, these O-rings create a better seal in enclosures, reservoirs, and other low-pressure equipment. They can withstand temperatures up to 400° F.

Made-to-Order High-Temperature Silicone O-Rings

When you need a silicone O-ring that’s not an industry standard size, we can make one to fit your requirements. These O-rings withstand temperatures up to 400° F.

High-Temperature Soft Silicone O-Rings
for Straight-Thread Connections

Softer than standard silicone O-rings, these O-rings form a better seal in enclosures, reservoirs, and other low-pressure equipment. They withstand temperatures up to 400° F or higher. Also known as Boss O-rings, they’re made for tube fittings with a straight-thread connection.

Square-Profile High-Temperature Silicone O-Rings

Made of silicone, these O-rings withstand temperatures up to 400° F. They have flat edges on all four sides, so they cover more surface than round-profile O-rings.

X-Profile High-Temperature Silicone O-Rings

Seal moving parts up to 450° F. Also known as Quattro seals and X-rings, these are the top choice among our silicone O-rings for dynamic applications.

High-Temperature High-Purity Silicone
O-Rings for Straight-Thread Connections

Also known as boss O-rings, these O-rings are sized to fit straight-thread fittings to prevent leaks.

High-Temperature Clean Room Silicone O-Rings

Made and bagged in an ISO Class 7 (Fed. Std. Class 10,000) clean room, these are the highest purity high-temperature O-rings we offer.

High-Temperature Metal- and
X-Ray-Detectable Silicone O-Rings

If these O-rings deteriorate and fall in your line, they’ll be caught by metal- and X-ray-detection systems.

Water- and Steam-Resistant EPDM O-Rings

Made of EPDM, these O-rings have excellent resistance to water, steam, and glycol-based fluids, including brake fluid.

O-Ring Assortments

High-Temperature O-Ring Assortments

Able to withstand heat up to 450° F, these O-rings maintain a strong seal even when the temperature rises.

Water- and Steam-Resistant EPDM and
High-Temperature Silicone O-Ring Assortments

Keep a range of sizes on hand so that you always have the O-ring you need.

High-Temperature Cord Stock

High-Temperature Silicone O-Ring Cord Stock

Use this cord stock to create O-rings for high-temperature applications up to 400° F.

High-Temperature Soft Silicone O-Ring Cord Stock

This cord stock is softer and creates a better seal than standard silicone cord stock in low-pressure applications up to 400° F.

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.

Square-Profile High-Temperature
Silicone O-Ring Cord Stock

This square-profile 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.

High-Temperature Foam Rings

Seal and damp vibration in high-temperature equipment with these rings.

About O-Rings