3.55MM CS X 35.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.55 x 35.5 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:
H3.55X35.5
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 35.5 mm (1.398 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 42.6 mm (1.68 in), catalogued under part number H3.55X35.5. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. The compound resists propane and butane, water, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ketones or polar solvents.

Common environments for this compound include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

This item is sold individually under part number H3.55X35.5. Unit weight is approximately 1.4794 g. Review your operating media and conditions against this specification before 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
H3.55X35.5
Description
3.55MM CS X 35.5MM ID BLACK BUNA 70D
Actual Outside Diameter
42.6 mm (1.68 inch)
Actual Cross Section
3.55 mm (0.14 inch)
Actual Inside Diameter
35.5 mm (1.398 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity