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-136 BLACK BUNA 70D O-RING

Buna-N O-Ring, 1.987 in ID x 0.103 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
24 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
136
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
2 inch
Nominal Outside Diameter
2 3/16 inch
Unit of Measure
EA
SKU:
H70MD136
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Product Specification

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This o-ring is supplied in AS568-136 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 1.987 in (50.47 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.193 in (55.7 mm), catalogued under part number H70MD136. It remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material holds up against greases and lubricants, water, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or ozone and direct sunlight are present.

The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across general industrial maintenance, hydraulic and pneumatic systems, and construction equipment.

Reference part number H70MD136 when ordering; the item is sold individually. Nominal inside diameter is listed as 2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H70MD136
Description
-136 BLACK BUNA 70D O-RING
Actual Cross Section
0.103 inch (2.62 mm)
Actual Inside Diameter
1.987 inch (50.47 mm)
Actual Outside Diameter
2.193 inch (55.7 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable