3.53MM CS X 68.26MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.53 x 68.26 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:
H3.53X68.26
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Product Specification

-
Ordered as H3.53X68.26, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 68.26 mm (2.687 in), a cross section of 3.53 mm (0.139 in), and an outside diameter of 75.32 mm (2.97 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. The compound resists propane and butane, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or polar solvents.

Typical settings include automotive, general industrial maintenance, and hydraulic and pneumatic systems.

H3.53X68.26 ships individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H3.53X68.26
Description
3.53MM CS X 68.26MM ID BLACK BUNA 70D
Actual Outside Diameter
75.32 mm (2.97 inch)
Actual Cross Section
3.53 mm (0.139 inch)
Actual Inside Diameter
68.26 mm (2.687 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity