3MM CS X 54.2MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 54.2 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:
H3X54.2
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Product Specification

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Part number H3X54.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 54.2 mm (2.134 in), a cross section of 3 mm (0.118 in), and an outside diameter of 60.2 mm (2.37 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to many alcohols, petroleum-based oils, and greases and lubricants. Buna-N (Nitrile) is valued for low compression set under sustained load, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where polar solvents or ozone and direct sunlight are present.

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

This item is sold individually under part number H3X54.2. 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
H3X54.2
Description
3MM CS X 54.2MM ID BLACK BUNA 70D
Actual Outside Diameter
60.2 mm (2.37 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
54.2 mm (2.134 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity