Red O-Rings | McMaster-Carr

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1,222 Products

About O-Rings

High-Temperature Silicone O-Rings

These silicone O-rings withstand temperatures up to 400° F or 450° F.

High-Temperature Soft Silicone O-Rings

Able to withstand temperatures up to 400° F, these O-rings are softer than standard silicone O-rings for a better seal in low-pressure applications.

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

When you need an O-ring that’s not an industry standard size, we can make one to fit your requirements. These O-rings withstand temperatures up to 450° F.

Square-Profile High-Temperature Silicone O-Rings

These square-profile O-rings have flat edges on all four sides, so they cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.

High-Temperature High-Purity Silicone O-Rings
for Tube Fittings with Straight-Thread Connection

Also known as Boss O-rings, these O-rings are for use in tube fittings with a straight-thread connection.

High-Temperature
Metal-Detectable Silicone O-Rings

If these O-rings deteriorate, they can be picked up by metal detection systems.

High-Temperature Silicone O-Ring Cord Stock

Use this cord stock to create O-rings for high-temperature 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 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 and
High-Temperature O-Ring Assortments

These assortments include a mix of EPDM O-rings that resist water and steam and silicone O-rings that resist temperatures up to 450° F.

Weather-Resistant Rubber Sealing Washers

Sunlight, ozone, and water won’t affect these washers.

Adjustable-Length Round Belting

Lengthen or shorten this polyurethane belting without tools or connectors—the interlocking links attach and detach with a twist.

Garden Hose Fitting Washers

Insert these washers in the threaded female end of a garden hose fitting to prevent leaks.

Water-Resistant SBR Hose Gasket Washers

Made of SBR rubber, these washers won’t break down from exposure to water.