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-377 BLACK BUNA 50D O-RING

Buna-N O-Ring, 9.975 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
377
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
10 inch
Nominal Outside Diameter
10 3/8 inch
Unit of Measure
EA
SKU:
H50377

Product Specification

-
The H50377 is an AS568-377 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 9.975 in (253.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.395 in (264.03 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. This material stands up to greases and lubricants, many alcohols, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.

It sees regular use in agricultural equipment, fluid power, and general industrial maintenance.

Reference part number H50377 when ordering; the item is sold individually. Nominal inside diameter is listed as 10 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H50377
Description
-377 BLACK BUNA 50D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
9.975 inch (253.37 mm)
Actual Outside Diameter
10.395 inch (264.03 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity