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This silicone O-ring is red in color, round in shape, has a durometer of 7OA, and is designed for use in a wide variety of sealing applications.
Silicone is acceptable for temperature applications between -65 degrees F (-54 degrees C) to 450 degrees F (232 degrees C). It has good resistance to ozone, weather, detergent, salt water, engine and transmission oil, non-petroleum brake fluid, hydraulic fluids that resist fire, vegetable and animal oils, and high molecular weight chlorinated aromatic hydrocarbons. Silicone is vulnerable to mechanical wear and tear, water and steam over 250 degrees F (121 degrees C), aromatic hydrocarbons (benzene), chlorinated hydrocarbons (trichloroethylene), acids and bases, and hydrocarbon fuels.
O-rings commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders. They are circular in shape, with a round cross section and a hole in the center, similar to a doughnut. O-rings are available in a number of sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter.
This silicone O-ring has a shore durometer of 70A. Shore durometer is the hardness of a material, and its resistance to permanent indentation. A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation.
This silicone O-ring meets standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.
joshua
2025-08-23 17:13:20
Sparky here,Fits perfectly over a 2†threaded PVC connector to make a water tight seal without the need for caulk. This will work nicely for my intended purposes.
Bry R
2025-08-20 12:08:15
Would purchase for gas cansa again
Joseph Surprenant
2025-07-27 18:37:27
Perfect size O-Ring replacement for outboard motor Star Brite Salt Off flush unit. Getting a 10 pack assures me that when one pops off into the river that I have a replacement on board. Works great.
ronald day
2025-07-01 15:29:17
Nothing wrong. I thought it would work for something different different. AOK
David Cline
2025-05-21 15:06:53
Great product, great price, great service
Customer
2025-05-19 20:46:31
Seems to work alright
lagarde
2025-04-06 14:48:10
it's an o ring, nothing to say more
Don H
2025-03-19 15:42:02
I used these to dress up a cheap replacement turn signal assembly for my motorcycle. The lense did not sit flush so I used one on each assembly to fill in the gap and now it looks great. The signal assemblies are still junk, but they look much better
Paul Latour
2025-01-11 13:53:52
Worked fine as a replacement for a garden sprayer.
Peter
2024-12-28 18:52:29
I was needing to replace an O-Ring on the lower radiator pipe of my 2009 Chevy Silverado 2500 HD 6.6. GM does not sell this ring as I went to the dealership and they would rather have you replace the whole hose then replace a $0.10 part. Online people said they used 329 Silicone O-Ring, 70A Durometer, Red, 2" ID, 2-3/8" OD, 3/16" Width but I found out that size is for newer models 2012 and newer. So i did change out the ring and no more leaks. I would recommend this aftermarket brand as a replacement just know your size. Too bad they do sell either both sizes together in a pack of 2 or have you buy them individually. h
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