Click for larger image and other views Image is representative of the product family. Select individual products in the table below for more specific images and product specifications

How can we improve our images or Product Specifications?

Buna O-Ring, 70A Durometer, Round, Black (Metric)

Be the first to review this item

Product Specifications
Nominal Width
n/a  millimeters
Material Type
Nitrile Rubber
Color Name
Nominal ID
n/a  millimeters
Brand Name
Small Parts
Dash Size
Cross Section Shape
Upper Temperature Range
250  Degrees Fahrenheit
70 A Durometer
Nominal OD
n/a  millimeters
LowerTemperature Range
-30  Degrees Fahrenheit
System of Measurement

This item is no longer available

These items ship for FREE with 2-Day Shipping on orders over $50. (Details)

Want it delivered on Fri, Apr 25? Order in-stock items in the next 21 hrs 25 mins and choose One-Day Shipping at checkout.

  • Share
Currently showing 1-20 of 404 Next 20 »
Actual ID Actual OD Actual Width Pkg Qty ASIN

The Amazon Standard Item Number (ASIN) uniquely identifies
the item in the (and Amazon) catalog.


If an item is currently out of stock, but has an estimated lead time, you can place an order now and we will ship it as soon as it is available.
You can also order more than we currently have in stock.
Read more about back orders in our help section.

All All All All      
Currently showing 1-20 of 404 Next 20 »
10 mm 13 mm 1.5 mm 100 B00595JPT8 3 $9.68 Buy Options
11 mm 14 mm 1.5 mm 100 B00595JR5K 1 $5.08 Buy Options
12 mm 15 mm 1.5 mm 100 B00595JTN0 4 $5.54 Buy Options
13 mm 16 mm 1.5 mm 100 B000FMYB94 3 $9.77 Buy Options
13.5 mm 16.5 mm 1.5 mm 100 B00595JUGG 1 $10.13 Buy Options
14 mm 17 mm 1.5 mm 100 B00595JVIS 1 $6.30 Buy Options
14.5 mm 17.5 mm 1.5 mm 100 B00595JX2C 2 $4.50 Buy Options
15 mm 18 mm 1.5 mm 100 B00595JXZY 2 $9.29 Buy Options
15.5 mm 18.5 mm 1.5 mm 100 B00595JZ02 3 $10.59 Buy Options
16 mm 19 mm 1.5 mm 100 B000FN0TSK Usually ships in 3 to 5 weeks $6.83 Buy Options
17 mm 20 mm 1.5 mm 100 B00595K05G 2 $6.99 Buy Options
17.5 mm 20.5 mm 1.5 mm 100 B00595K1LO 1 $11.09 Buy Options
18 mm 21 mm 1.5 mm 100 B00595K2NQ 1 $12.01 Buy Options
19 mm 22 mm 1.5 mm 100 B00595K42K 1 $11.10 Buy Options
19.5 mm 22.5 mm 1.5 mm 100 B00595K574 1 $11.14 Buy Options
2 mm 5 mm 1.5 mm 100 B00595K6MS 3 $8.38 Buy Options
20 mm 23 mm 1.5 mm 100 B00595K7HW Usually ships in 3 to 4 weeks $10.52 Buy Options
21.5 mm 24.5 mm 1.5 mm 100 B00595K9TS 2 $12.80 Buy Options
23 mm 26 mm 1.5 mm 100 B00595KCIQ 4 $12.31 Buy Options
25 mm 28 mm 1.5 mm 100 B00595KENY 3 $12.44 Buy Options

Key Features

  • Made of Buna-nitrile 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

Product Description

This O-ring is made of Buna-nitrile (also called Buna-N), 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, resistance to abrasion, tear, and compression set resistance. It is acceptable for temperature applications between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C). It 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 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 cylinders of various sorts. 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.

How can we improve our Product Description?

Customer Reviews

There are no customer reviews yet.

Be the first to review this item

Go to the HomePage

Order by Phone
M-F 8am-8pm ET, Sat-Sun 8am-5pm ET 800-220-4242

Become an Associate| Careers| About Us| Contact Us| Conditions of Use| Privacy Notice| Website Feedback | Returns

Follow Us 

© 2014, Inc. and its affiliates.