Read top consumer ratings: Small Parts 339

Ratings

Category: Misc.
Brand: Small Parts
Model: 339
Availability: Usually ships in 1-2 business days.
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Small Parts 339 Consumer Report

Small Parts 339 Review by Stanley E. Kessler (Pa)

I'm always running for o rings for something now I have a stock at home.

Small Parts 339 Review by ThenewWave

I simply misunderstood what this product meant by 0-ring. However even given this slight mistake along with a little lubricant this doubles as a great 0-ring stabilizer.

Small Parts 339 Review by Mann_Bunch "I love it when a plan comes together" (NJ, USA)

There's not much to say about o rings, unless they don't work. However, these are just fine. They appear to be well made and true to size. If you need them, buy them without worry.

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Small Parts 339:: Description

This O-ring is made of black Buna-nitrile, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications.

Buna-nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. It can be used in temperatures between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C), and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol, acids and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light.

This Buna 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.

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 various sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter.

These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.