Durometer,,/category/kitchen/beer-grill/,Black,,O-Ring,,carloscanais.pt,420,Round,,Buna-N,70A,4-3/8,Industrial Scientific , Hydraulics, Pneumatics Plumbin , Seals O-Rings,3-7/8",$6,ID, 67% OFF of fixed price 420 Buna-N O-Ring 70A Durometer Round 8" 4-3 3-7 ID 8 Black 67% OFF of fixed price 420 Buna-N O-Ring 70A Durometer Round 8" 4-3 3-7 ID 8 Black $6 420 Buna-N O-Ring, 70A Durometer, Round, Black, 3-7/8" ID, 4-3/8 Industrial Scientific Hydraulics, Pneumatics Plumbin Seals O-Rings Durometer,,/category/kitchen/beer-grill/,Black,,O-Ring,,carloscanais.pt,420,Round,,Buna-N,70A,4-3/8,Industrial Scientific , Hydraulics, Pneumatics Plumbin , Seals O-Rings,3-7/8",$6,ID, $6 420 Buna-N O-Ring, 70A Durometer, Round, Black, 3-7/8" ID, 4-3/8 Industrial Scientific Hydraulics, Pneumatics Plumbin Seals O-Rings

67% OFF of fixed price 420 Buna-N O-Ring 70A Durometer Round Free shipping / New 8

420 Buna-N O-Ring, 70A Durometer, Round, Black, 3-7/8" ID, 4-3/8

$6

420 Buna-N O-Ring, 70A Durometer, Round, Black, 3-7/8" ID, 4-3/8

|||

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.

420 Buna-N O-Ring, 70A Durometer, Round, Black, 3-7/8" ID, 4-3/8

Advice from ABDO

Clinical Hub
Read more
Business Advice
Read more
Advice for Members
Read more
Advice and Guidelines
Read more
Policy and Regulation
Read more
Examinations
Read more

Latest news from Dispensing Optics

My Bella Mama Maternity Essential Robe
Children missing out on vital eye exams

Children in low income countries at greater risk, says charity

See you at the SEE Summit

Eco-warrior Abi Page looks at the event's evolution

ABDO supports Eye Week campaign

Max Halford highlights myopia risks to children's vision

Supporting VAO training courses

Tony Douglass donates learning materials

Latest events

BOOKINGS NOW CLOSED FOR THIS SESSION

Online Peer Discussion – Did you forget to mention something important?

Sunday 26th September 2021

BOOKING NOW OPEN

Online Discussion Workshop – Eco Innovation in Frame Technology

Tuesday 28th September 2021

Webinar

SEE Event

Monday 4th October 2021