-234 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.984 in ID x 0.139 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
234
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
1/8 inch
Nominal Inside Diameter
3 inch
Nominal Outside Diameter
3 1/4 inch
Unit of Measure
EA
SKU:
H70MD234
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Product Specification

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H70MD234 is an AS568-234 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.984 in (75.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.262 in (82.85 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to greases and lubricants, hydraulic fluids, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ketones call for a different compound.

This o-ring is metal detectable for HACCP and foreign-body control programs. Typical settings include automotive, general industrial maintenance, and agricultural equipment.

Stocked as H70MD234 and sold individually. Nominal inside diameter is listed as 3 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H70MD234
Description
-234 BLACK BUNA 70D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
2.984 inch (75.79 mm)
Actual Outside Diameter
3.262 inch (82.85 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable