3MM CS X 42MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 42 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:
H3X42
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Product Specification

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Ordered as H3X42, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 42 mm (1.654 in), a cross section of 3 mm (0.118 in), and an outside diameter of 48 mm (1.89 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to hydraulic fluids, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to strong acids or ozone and direct sunlight will shorten service life.

Typical settings include general industrial maintenance, agricultural equipment, and automotive.

This item is sold individually under part number H3X42. Unit weight is approximately 1.23 g. Review your operating media and conditions against this specification before installation.
Item
H3X42
Description
3MM CS X 42MM ID BLACK BUNA 70D
Actual Outside Diameter
48 mm (1.89 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
42 mm (1.654 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity