5.7MM CS X 144.6MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.7 x 144.6 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:
H5.7X144.6
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Product Specification

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H5.7X144.6 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 144.6 mm (5.693 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 156 mm (6.14 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint. Source specification: Metric O-RING, JIS P145.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, economical choice for high-volume maintenance programs. The material holds up against many alcohols, water, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or strong acids call for a different compound.

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

H5.7X144.6 ships individually. Unit weight is approximately 14.548 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H5.7X144.6
Description
5.7MM CS X 144.6MM ID BLACK BUNA 70D
Actual Outside Diameter
156 mm (6.14 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
144.6 mm (5.693 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity