3.5MM CS X 64MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 64 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:
H3.5X64
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Product Specification

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Ordered as H3.5X64, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 64 mm (2.52 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 71 mm (2.8 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. It resists water, propane and butane, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

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

This item is sold individually under part number H3.5X64. Unit weight is approximately 2.64 g. Application requirements vary, so validate compatibility with your process conditions prior to 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
H3.5X64
Description
3.5MM CS X 64MM ID BLACK BUNA 70D
Actual Outside Diameter
71 mm (2.8 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
64 mm (2.52 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity