3MM CS X 57MM ID BLACK BUNA 90D

Buna-N O-Ring, 3 x 57 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:
H90M3X57
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Product Specification

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APG stocks the H90M3X57, a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 57 mm (2.244 in), a cross section of 3 mm (0.118 in), and an outside diameter of 63 mm (2.48 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Expect good resistance to propane and butane, greases and lubricants, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in ketones or polar solvents.

Common environments for this compound include fluid power, general industrial maintenance, and construction equipment.

Reference part number H90M3X57 when ordering; the item is sold individually. Unit weight is approximately 1.788 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H90M3X57
Description
3MM CS X 57MM ID BLACK BUNA 90D
Actual Outside Diameter
63 mm (2.48 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
57 mm (2.244 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity