3.5MM CS X 70MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 70 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:
H3.5X70
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Product Specification

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The H3.5X70 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 70 mm (2.756 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 77 mm (3.03 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against greases and lubricants, water, and many alcohols. Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include agricultural equipment, general industrial maintenance, and hydraulic and pneumatic systems.

Reference part number H3.5X70 when ordering; the item is sold individually. Unit weight is approximately 2.713 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H3.5X70
Description
3.5MM CS X 70MM ID BLACK BUNA 70D
Actual Outside Diameter
77 mm (3.03 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
70 mm (2.756 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity