2.5MM CS X 39MM ID BLACK BUNA 90D

Buna-N O-Ring, 2.5 x 39 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:
H90M2.5X39
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Product Specification

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The H90M2.5X39 is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 39 mm (1.535 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 44 mm (1.73 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against petroleum-based oils, propane and butane, and greases and lubricants. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or ketones.

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

This item is sold individually under part number H90M2.5X39. Unit weight is approximately 0.857 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H90M2.5X39
Description
2.5MM CS X 39MM ID BLACK BUNA 90D
Actual Outside Diameter
44 mm (1.73 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
39 mm (1.535 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity