8MM CS X 140MM ID BLACK BUNA 70D

Buna-N O-Ring, 8 x 140 mm, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
30 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:
H8X140

Product Specification

-
The H8X140 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 140 mm (5.512 in), a cross section of 8 mm (0.315 in), and an outside diameter of 156 mm (6.14 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material holds up against hydraulic fluids, water, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or polar solvents will shorten service life.

Typical settings include construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H8X140. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H8X140
Description
8MM CS X 140MM ID BLACK BUNA 70D
Actual Outside Diameter
156 mm (6.14 inch)
Actual Cross Section
8 mm (0.315 inch)
Actual Inside Diameter
140 mm (5.512 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity