2.4MM CS X 21.3MM ID BLACK BUNA 90D

Buna-N O-Ring, 2.4 x 21.3 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:
H90M2.4X21.3
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Product Specification

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Ordered as H90M2.4X21.3, this is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 21.3 mm (0.839 in), a cross section of 2.4 mm (0.094 in), and an outside diameter of 26.1 mm (1.03 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against water, many alcohols, and greases and lubricants. Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

Typical settings include agricultural equipment, fluid power, and construction equipment.

Order part number H90M2.4X21.3, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H90M2.4X21.3
Description
2.4MM CS X 21.3MM ID BLACK BUNA 90D
Actual Outside Diameter
26.1 mm (1.03 inch)
Actual Cross Section
2.4 mm (0.094 inch)
Actual Inside Diameter
21.3 mm (0.839 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity