-346 BLACK BUNA 90D O-RING

Buna-N O-Ring, 4.1 in ID x 0.21 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
346
Durometer
90 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:
H90346
Please login to see price and add to cart

Product Specification

-
Ordered as H90346, this is an AS568-346 black Buna-N (Nitrile) 90 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 remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified for strong abrasion and tear resistance, low compression set under sustained load. The material holds up against propane and butane, many alcohols, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across fluid power, hydraulic and pneumatic systems, and automotive.

Stocked as H90346 and sold individually. Unit weight is approximately 10.945 g. Review your operating media and conditions against this specification before installation.
Item
H90346
Description
-346 BLACK BUNA 90D 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