2.5MM CS X 40MM ID BLACK BUNA 90D

Buna-N O-Ring, 2.5 x 40 mm, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
90 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:
H90M2.5X40
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 40 mm (1.575 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 45 mm (1.77 in), catalogued under part number H90M2.5X40. It creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. The material holds up against many alcohols, propane and butane, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving strong acids or polar solvents call for a different compound.

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

This item is sold individually under part number H90M2.5X40. Unit weight is approximately 0.846 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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
H90M2.5X40
Description
2.5MM CS X 40MM ID BLACK BUNA 90D
Actual Outside Diameter
45 mm (1.77 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
40 mm (1.575 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity