8MM CS X 22.8MM ID BLACK BUNA 70D

Buna-N O-Ring, 8 x 22.8 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H.8X22.8
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Product Specification

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The H.8X22.8 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 22.8 mm (0.898 in), a cross section of 8 mm (0.315 in), and an outside diameter of 38.8 mm (1.53 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Expect good resistance to greases and lubricants, hydraulic fluids, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with automotive brake fluid or ketones.

You will find this material specified across hydraulic and pneumatic systems, fluid power, and automotive.

This item is sold individually under part number H.8X22.8. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H.8X22.8
Description
8MM CS X 22.8MM ID BLACK BUNA 70D
Actual Outside Diameter
38.8 mm (1.53 inch)
Actual Cross Section
8 mm (0.315 inch)
Actual Inside Diameter
22.8 mm (0.898 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity