3MM CS X 186MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 186 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H3X186
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Product Specification

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APG stocks the H3X186, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 186 mm (7.323 in), a cross section of 3 mm (0.118 in), and an outside diameter of 192 mm (7.56 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The compound resists greases and lubricants, propane and butane, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.

It sees regular use in general industrial maintenance, hydraulic and pneumatic systems, and automotive.

H3X186 ships individually. Unit weight is approximately 4.48 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H3X186
Description
3MM CS X 186MM ID BLACK BUNA 70D
Actual Outside Diameter
192 mm (7.56 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
186 mm (7.323 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity