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-153 BLACK BUNA 70D O-RING

Buna-N O-Ring, 3.487 in ID x 0.103 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
22 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
153
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
3/32 inch
Nominal Inside Diameter
3 1/2 inch
Nominal Outside Diameter
3 11/16 inch
Unit of Measure
EA
SKU:
H70MD153
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Product Specification

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This o-ring is supplied in AS568-153 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 3.487 in (88.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.693 in (93.8 mm), catalogued under part number H70MD153. It creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to hydraulic fluids, water, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

This o-ring is metal detectable for HACCP and foreign-body control programs. It sees regular use in general industrial maintenance, agricultural equipment, and fluid power.

H70MD153 ships individually. Nominal inside diameter is listed as 3 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H70MD153
Description
-153 BLACK BUNA 70D O-RING
Actual Cross Section
0.103 inch (2.62 mm)
Actual Inside Diameter
3.487 inch (88.57 mm)
Actual Outside Diameter
3.693 inch (93.8 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable