3.1MM CS X 144.4MM ID BLACK BUNA 90D

Buna-N O-Ring, 3.1 x 144.4 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:
H90M3.1X144.4
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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 144.4 mm (5.685 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 150.6 mm (5.93 in), catalogued under part number H90M3.1X144.4. It compresses into its gland to block fluid or gas migration across a joint. This item is further identified as Metric O-RING, JIS G145.

As a material, Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. It resists water, hydraulic fluids, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include construction equipment, automotive, and fluid power.

Order part number H90M3.1X144.4, sold individually. Unit weight is approximately 4.8831 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H90M3.1X144.4
Description
3.1MM CS X 144.4MM ID BLACK BUNA 90D
Actual Outside Diameter
150.6 mm (5.93 inch)
Actual Cross Section
3.1 mm (0.122 inch)
Actual Inside Diameter
144.4 mm (5.685 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity