-229 BLACK BUNA 50D O-RING

Buna-N O-Ring, 2.359 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
229
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
2 3/8 inch
Nominal Outside Diameter
2 5/8 inch
Unit of Measure
EA
SKU:
H50229
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Product Specification

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Part number H50229 is an AS568-229 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 2.359 in (59.92 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.637 in (66.98 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against hydraulic fluids, water, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or polar solvents.

Typical settings include general industrial maintenance, fluid power, and construction equipment.

H50229 ships individually. Nominal inside diameter is listed as 2 3/8 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H50229
Description
-229 BLACK BUNA 50D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
2.359 inch (59.92 mm)
Actual Outside Diameter
2.637 inch (66.98 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity