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-375 BLACK BUNA 50D O-RING

Buna-N O-Ring, 9.475 in ID x 0.21 CS, 50A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
21 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
375
Durometer
50 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
9 1/2 inch
Nominal Outside Diameter
9 7/8 inch
Unit of Measure
EA
SKU:
H50375

Product Specification

-
Part number H50375 is an AS568-375 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 9.475 in (240.67 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 9.895 in (251.33 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. Expect good resistance to greases and lubricants, petroleum-based oils, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or polar solvents will shorten service life.

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

Stocked as H50375 and sold individually. Nominal inside diameter is listed as 9 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H50375
Description
-375 BLACK BUNA 50D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
9.475 inch (240.67 mm)
Actual Outside Diameter
9.895 inch (251.33 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity