5.3MM CS X 145MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.3 x 145 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:
H5.3X145
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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 145 mm (5.709 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 155.6 mm (6.13 in), catalogued under part number H5.3X145. It delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. The material holds up against many alcohols, water, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

It sees regular use in general industrial maintenance, construction equipment, and fluid power.

Stocked as H5.3X145 and sold individually. Unit weight is approximately 12.906 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H5.3X145
Description
5.3MM CS X 145MM ID BLACK BUNA 70D
Actual Outside Diameter
155.6 mm (6.13 inch)
Actual Cross Section
5.3 mm (0.209 inch)
Actual Inside Diameter
145 mm (5.709 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity