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-346 BLACK BUNA 50D O-RING

Buna-N O-Ring, 4.1 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
346
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
4 1/8 inch
Nominal Outside Diameter
4 1/2 inch
Unit of Measure
EA
SKU:
H50346

Product Specification

-
Ordered as H50346, this is an AS568-346 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 4.1 in (104.14 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.52 in (114.81 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. It resists propane and butane, petroleum-based oils, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ketones.

Typical settings include construction equipment, general industrial maintenance, and agricultural equipment.

H50346 ships individually. Nominal inside diameter is listed as 4 1/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H50346
Description
-346 BLACK BUNA 50D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
4.1 inch (104.14 mm)
Actual Outside Diameter
4.52 inch (114.81 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity