-246 BLACK BUNA 50D O-RING

Buna-N O-Ring, 4.484 in ID x 0.139 CS, 50A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
246
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
1/8 inch
Nominal Inside Diameter
4 1/2 inch
Nominal Outside Diameter
4 3/4 inch
Unit of Measure
EA
SKU:
H50246
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Product Specification

-
APG stocks the H50246, an AS568-246 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 4.484 in (113.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.762 in (120.95 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is valued for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. It resists propane and butane, many alcohols, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or strong acids.

It sees regular use in hydraulic and pneumatic systems, construction equipment, and automotive.

This item is sold individually under part number H50246. Unit weight is approximately 0.0047 g and nominal inside diameter is listed as 4 1/2 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H50246
Description
-246 BLACK BUNA 50D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
4.484 inch (113.89 mm)
Actual Outside Diameter
4.762 inch (120.95 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity