-323 BLACK BUNA 90D O-RING

Buna-N O-Ring, 1.287 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
323
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
1 5/16 inch
Nominal Outside Diameter
1 11/16 inch
Unit of Measure
EA
SKU:
H90323
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Product Specification

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H90323 is an AS568-323 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 1.287 in (32.69 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.707 in (43.36 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. It resists greases and lubricants, petroleum-based oils, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ozone and direct sunlight will shorten service life.

It sees regular use in agricultural equipment, fluid power, and automotive.

H90323 ships individually. Unit weight is approximately 3.6016 g. Review your operating media and conditions against this specification before installation.
Item
H90323
Description
-323 BLACK BUNA 90D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
1.287 inch (32.69 mm)
Actual Outside Diameter
1.707 inch (43.36 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity