-323 BLACK BUNA 70D O-RING

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

Status
Available
Est. Ship Date
1 Nov 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:
H70323
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Product Specification

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H70323 is an AS568-323 black Buna-N (Nitrile) 70 Shore A O-Ring supplied 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). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to hydraulic fluids, propane and butane, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.

Typical settings include automotive, agricultural equipment, and construction equipment.

H70323 ships individually. Unit weight is approximately 3.33 g and nominal inside diameter is listed as 1 5/16 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H70323
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
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity