4MM CS X 74MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 74 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:
H4X74
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Product Specification

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The H4X74 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 74 mm (2.913 in), a cross section of 4 mm (0.157 in), and an outside diameter of 82 mm (3.23 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. It resists many alcohols, hydraulic fluids, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with polar solvents or ozone and direct sunlight.

You will find this material specified across construction equipment, hydraulic and pneumatic systems, and agricultural equipment.

This item is sold individually under part number H4X74. Unit weight is approximately 3.819 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H4X74
Description
4MM CS X 74MM ID BLACK BUNA 70D
Actual Outside Diameter
82 mm (3.23 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
74 mm (2.913 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity