3.5MM CS X 30MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 30 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:
H3.5X30
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 30 mm (1.181 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 37 mm (1.46 in), catalogued under part number H3.5X30. It remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material holds up against propane and butane, petroleum-based oils, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ozone and direct sunlight will shorten service life.

You will find this material specified across fluid power, general industrial maintenance, and agricultural equipment.

Order part number H3.5X30, sold individually. Unit weight is approximately 1.25 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H3.5X30
Description
3.5MM CS X 30MM ID BLACK BUNA 70D
Actual Outside Diameter
37 mm (1.46 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
30 mm (1.181 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity