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  Our Catalog   Hydraulics, Pneumatics & Plumbing   Seals & O-Rings   O-Rings

318 Buna-N O-Ring, 70A Durometer, Round, Black, 1" ID, 1-3/8" OD, 3/16" Width (Pack of 50)


Save 1% on the 318 Buna-N O-Ring, 70A Durometer, Round, Black, 1'' ID, 1-3/8'' OD, 3/16'' Width (Pack of 50) by Small Parts at In The National Interest. MPN: 318-7470. Hurry! Limited time offer. Offer valid only while supplies last. 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


Product 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.

Features & Highlights

  • Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons
  • Can be used across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C)
  • Round in cross-section to provide a seal between cylindrical overlapping surfaces
  • Durometer (hardness) of 70A for resistance to penetration
  • Meets standards defined by Aerospace Standard AS568A

Additional Information

Manufacturer:Sterling Seal
Brand:Small Parts
Color:Black
Model:318
Part Number:318-7470
Publisher:Sterling Seal
Studio:Sterling Seal
MPN:318-7470
Package Weight:0.3 pounds
Package Size:5 x 1.3 x 1.3 inches

318 Buna-N O-Ring, 70A Durometer, Round, Black, 1'' ID, 1-3/8'' OD, 3/16'' Width (Pack of 50) by Small Parts

Buy Now:
318 Buna-N O-Ring, 70A Durometer, Round, Black, 1" ID, 1-3/8" OD, 3/16" Width (Pack of 50)

Brand: Small Parts
Condition: New
Lead Time: 1 - 2 Business Days
Availability: In Stock
$10.53
$10.45


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