8MM CS X 54MM ID BLACK BUNA 70D

Buna-N O-Ring, 8 x 54 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:
H8X54
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Product Specification

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H8X54 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 54 mm (2.126 in), a cross section of 8 mm (0.315 in), and an outside diameter of 70 mm (2.76 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is known for low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to greases and lubricants, petroleum-based oils, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

You will find this material specified across fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

Order part number H8X54, sold individually. Unit weight is approximately 11.957 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H8X54
Description
8MM CS X 54MM ID BLACK BUNA 70D
Actual Outside Diameter
70 mm (2.76 inch)
Actual Cross Section
8 mm (0.315 inch)
Actual Inside Diameter
54 mm (2.126 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity