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-323 BLACK BUNA 70D O-RING

Buna-N O-Ring, 1.287 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
22 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
323
Durometer
70 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:
H70MD323
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Product Specification

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Part number H70MD323 is an AS568-323 black Buna-N (Nitrile) 70 Shore A O-Ring with 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). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists petroleum-based oils, propane and butane, and water. Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

This item is metal detectable for HACCP and foreign-body control programs. It sees regular use in hydraulic and pneumatic systems, automotive, and general industrial maintenance.

H70MD323 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H70MD323
Description
-323 BLACK BUNA 70D 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
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable