4MM CS X 61MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 61 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:
H4X61
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 61 mm (2.402 in), a cross section of 4 mm (0.157 in), and an outside diameter of 69 mm (2.72 in), catalogued under part number H4X61. It delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to greases and lubricants, propane and butane, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

You will find this material specified across automotive, construction equipment, and fluid power.

This item is sold individually under part number H4X61. Unit weight is approximately 3.1728 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H4X61
Description
4MM CS X 61MM ID BLACK BUNA 70D
Actual Outside Diameter
69 mm (2.72 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
61 mm (2.402 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity