2.5MM CS X 53MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 53 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:
H2.5X53
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Product Specification

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Ordered as H2.5X53, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 53 mm (2.087 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 58 mm (2.28 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. The material holds up against greases and lubricants, water, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid.

You will find this material specified across fluid power, hydraulic and pneumatic systems, and automotive.

This item is sold individually under part number H2.5X53. Unit weight is approximately 1.0754 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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
H2.5X53
Description
2.5MM CS X 53MM ID BLACK BUNA 70D
Actual Outside Diameter
58 mm (2.28 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
53 mm (2.087 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity