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-319 BLACK BUNA 50D O-RING

Buna-N O-Ring, 1.037 in ID x 0.21 CS, 50A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
20 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
319
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
1 1/16 inch
Nominal Outside Diameter
1 7/16 inch
Unit of Measure
EA
SKU:
H50319

Product Specification

-
Part number H50319 is an AS568-319 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 1.037 in (26.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.457 in (37.01 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to petroleum-based oils, hydraulic fluids, and water. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

Common environments for this compound include general industrial maintenance, hydraulic and pneumatic systems, and agricultural equipment.

Order part number H50319, sold individually. Nominal inside diameter is listed as 1 1/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H50319
Description
-319 BLACK BUNA 50D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
1.037 inch (26.34 mm)
Actual Outside Diameter
1.457 inch (37.01 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity