3MM CS X 6.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 6.5 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:
H3X6.5
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Product Specification

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The H3X6.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 6.5 mm (0.256 in), a cross section of 3 mm (0.118 in), and an outside diameter of 12.5 mm (0.49 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. This material stands up to petroleum-based oils, greases and lubricants, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ozone and direct sunlight will shorten service life.

It sees regular use in construction equipment, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H3X6.5. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H3X6.5
Description
3MM CS X 6.5MM ID BLACK BUNA 70D
Actual Outside Diameter
12.5 mm (0.49 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
6.5 mm (0.256 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity