4MM CS X 282MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 282 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:
H4X282
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Product Specification

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H4X282 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 282 mm (11.102 in), a cross section of 4 mm (0.157 in), and an outside diameter of 290 mm (11.42 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. The material holds up against propane and butane, greases and lubricants, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

Maintenance and OEM teams specify it across automotive, general industrial maintenance, and construction equipment.

Reference part number H4X282 when ordering; the item is sold individually. Unit weight is approximately 13.9023 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
H4X282
Description
4MM CS X 282MM ID BLACK BUNA 70D
Actual Outside Diameter
290 mm (11.42 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
282 mm (11.102 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity