5.7MM CS X 87.2MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.7 x 87.2 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:
H5.7X87.2
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 87.2 mm (3.433 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 98.6 mm (3.88 in), catalogued under part number H5.7X87.2. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to water, hydraulic fluids, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

You will find this material specified across construction equipment, automotive, and general industrial maintenance.

Reference part number H5.7X87.2 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H5.7X87.2
Description
5.7MM CS X 87.2MM ID BLACK BUNA 70D
Actual Outside Diameter
98.6 mm (3.88 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
87.2 mm (3.433 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity