-337 BLACK BUNA 90D O-RING

Buna-N O-Ring, 2.975 in ID x 0.21 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
337
Durometer
90 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
3 inch
Nominal Outside Diameter
3 3/8 inch
Unit of Measure
EA
SKU:
H90337
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Product Specification

-
This o-ring is supplied in AS568-337 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 2.975 in (75.57 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.395 in (86.23 mm), catalogued under part number H90337. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists propane and butane, petroleum-based oils, and water. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ozone and direct sunlight are present.

You will find this material specified across general industrial maintenance, hydraulic and pneumatic systems, and automotive.

This item is sold individually under part number H90337. Unit weight is approximately 7.42 g and nominal inside diameter is listed as 3 inch. Review your operating media and conditions against this specification before installation.
Item
H90337
Description
-337 BLACK BUNA 90D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
2.975 inch (75.57 mm)
Actual Outside Diameter
3.395 inch (86.23 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity