3.1MM CS X 134.4MM ID BLACK BUNA 90D

Buna-N O-Ring, 3.1 x 134.4 mm, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
90 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:
H90M3.1X134.4
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 134.4 mm (5.291 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 140.6 mm (5.54 in), catalogued under part number H90M3.1X134.4. It provides a reliable static or dynamic seal by deforming into its gland under assembly load. This item is further identified as Metric O-RING, JIS G135.

Buna-N (Nitrile) delivers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. The compound resists water, hydraulic fluids, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or strong acids call for a different compound.

It sees regular use in general industrial maintenance, automotive, and hydraulic and pneumatic systems.

H90M3.1X134.4 ships individually. Unit weight is approximately 4.5971 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H90M3.1X134.4
Description
3.1MM CS X 134.4MM ID BLACK BUNA 90D
Actual Outside Diameter
140.6 mm (5.54 inch)
Actual Cross Section
3.1 mm (0.122 inch)
Actual Inside Diameter
134.4 mm (5.291 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity