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8MM CS X 148MM ID BLACK BUNA 70D

Buna-N O-Ring, 8 x 148 mm, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
22 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:
H8X148

Product Specification

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The H8X148 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 148 mm (5.827 in), a cross section of 8 mm (0.315 in), and an outside diameter of 164 mm (6.46 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against water, propane and butane, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ketones will shorten service life.

Common environments for this compound include agricultural equipment, construction equipment, and hydraulic and pneumatic systems.

Stocked as H8X148 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H8X148
Description
8MM CS X 148MM ID BLACK BUNA 70D
Actual Outside Diameter
164 mm (6.46 inch)
Actual Cross Section
8 mm (0.315 inch)
Actual Inside Diameter
148 mm (5.827 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity