-271 BLACK BUNA 70D O-RING

Buna-N O-Ring, 9.234 in ID x 0.139 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
271
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
9 1/4 inch
Nominal Outside Diameter
9 1/2 inch
Unit of Measure
EA
SKU:
H70271
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Product Specification

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This o-ring is supplied in AS568-271 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 9.234 in (234.54 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.512 in (241.6 mm), catalogued under part number H70271. It delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against greases and lubricants, water, and propane and butane. Buna-N (Nitrile) is specified for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

Common environments for this compound include construction equipment, agricultural equipment, and automotive.

H70271 ships individually. Unit weight is approximately 9.1963 g and nominal inside diameter is listed as 9 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H70271
Description
-271 BLACK BUNA 70D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
9.234 inch (234.54 mm)
Actual Outside Diameter
9.512 inch (241.6 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity