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This O-ring is made of brown Viton and has a durometer of 75A. It has a round cross-section and can be used across a wide temperature range (-15 degrees F/-26 degrees C to 400 degrees F/205 degrees C). Designed for use in a wide variety of sealing applications, this Viton O-ring meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.
Viton (fluorocarbon elastomer) has high heat, fuel, and chemical resistance, and is compatible for use with non-flammable hydraulic fuels, silicone oil, chlorinated hydrocarbons (trichlorethylene), fuels, aromatic hydrocarbons (benzene) and aliphatic hydrocarbons (propane), as well as high vacuum environments, ozone, and weathering. Viton is vulnerable to low molecular organic acids, ammonia gas, alkalis, amines, glycol-based brake fluids, and super-heated steam.
The durometer hardness of this Viton O-ring is 75A. Durometers measure 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, a value of 0 indicates that a sample was completely penetrated, while a value of 100 shows no indentation in the sample. The letter following the number identifies the shore scale, which is either shore A or D. Shore A is used for softer plastics, while shore D is used for harder plastics.
O-rings 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 various AS568A dash sizes, which is the standardized sizing for O-rings, and defines the nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter of an O-ring.
VCF
2025-09-03 17:00:11
These are a perfect fit for the plunger of the Smith Contractor 190216 2-Gallon Sprayer. Lubricate them with some O-ring lubricant like Permatex, or whatever. They're viton, just like the original. They fit well, and at the time I purchased them, cost a tiny fraction of the price of the official replacements.
cust.
2025-08-26 16:40:08
Hydraulic application I used them for replaces poor quality new o-rings. The other o-rings were leaking, these did not.
Joshua
2025-08-02 17:39:04
I used the o-rings to reseal fuel return lines on a diesel engine and they worked perfect. They’re where no blemishes in any of the o-rings. The price is reasonable, much cheaper than getting them from an auto parts store.
Gmatthews
2025-07-27 11:33:46
Some what ok
Eric Leppert
2025-07-25 11:20:49
Bought them to replace the damaged O-Ring on my 7 year old Scepter gas can. No more leaks! Should fit all Scepter fuel cans regardless of capacity or fuel type as the spout that has the O-Ring is the same across the entier product line as far as I know. Will probably fit other gas cans as well but have not tried it. Much cheaper than a new can.
user
2025-06-04 16:18:58
Nice quality, great price and precision sizing.
Andrew mark slayton
2025-04-14 18:26:24
These are the same size for a 9mm threaded barrel and cheaper than buying them from a barrel manufacturer. Definitely recommend.
Strickdog
2025-02-04 18:58:11
Good product at a good price!
Alejandro C
2025-01-29 21:47:52
It was one size too big for my application, but the material composition and elasticity were perfect. Exchanged for the same product, one size smaller.
Gaerith
2025-01-17 11:40:26
O-rings were perfect! I had a hard time finding these for some reason. None of my pool/spa places had the o-rings for my hot tub pump components
Brian Winer
2025-01-05 12:41:57
Great delivery - of course! Exactly what I needed to do repairs on an outdoor water fixture. Viton is so much better than Buna-N for so many applications.
Yomomma's Wildlands
2024-12-29 12:44:15
Correct size and flavour
Steeve Lamy
2024-11-25 09:23:30
Wrong o-ring size. Mislabelled as 111. Caught it too late to return.
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