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-044 BLACK BUNA 50D O-RING

Buna-N O-Ring, 3.739 in ID x 0.07 CS, 50A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
20 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
44
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
1/16 inch
Nominal Inside Diameter
3 3/4 inch
Nominal Outside Diameter
3 7/8 inch
Unit of Measure
EA
SKU:
H50044

Product Specification

-
The H50044 is an AS568-044 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 3.739 in (94.97 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 3.879 in (98.53 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists propane and butane, many alcohols, and water. That behavior comes from the compound itself: Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ozone and direct sunlight are present.

Typical settings include agricultural equipment, construction equipment, and automotive.

Order part number H50044, sold individually. Nominal inside diameter is listed as 3 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H50044
Description
-044 BLACK BUNA 50D O-RING
Actual Cross Section
0.07 inch (1.78 mm)
Actual Inside Diameter
3.739 inch (94.97 mm)
Actual Outside Diameter
3.879 inch (98.53 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity