2MM CS X 21MM ID BLACK BUNA 70D

Buna-N O-Ring, 2 x 21 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 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:
H2X21
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Product Specification

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Part number H2X21 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 21 mm (0.827 in), a cross section of 2 mm (0.079 in), and an outside diameter of 25 mm (0.98 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. It resists hydraulic fluids, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ozone and direct sunlight.

It sees regular use in construction equipment, fluid power, and automotive.

This item is sold individually under part number H2X21. Unit weight is approximately 0.284 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H2X21
Description
2MM CS X 21MM ID BLACK BUNA 70D
Actual Outside Diameter
25 mm (0.98 inch)
Actual Cross Section
2 mm (0.079 inch)
Actual Inside Diameter
21 mm (0.827 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity