3MM CS X 29.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 29.5 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:
H3X29.5
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Product Specification

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The H3X29.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 29.5 mm (1.161 in), a cross section of 3 mm (0.118 in), and an outside diameter of 35.5 mm (1.4 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Expect good resistance to propane and butane, many alcohols, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in strong acids or polar solvents.

Typical settings include agricultural equipment, fluid power, and hydraulic and pneumatic systems.

H3X29.5 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H3X29.5
Description
3MM CS X 29.5MM ID BLACK BUNA 70D
Actual Outside Diameter
35.5 mm (1.4 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
29.5 mm (1.161 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity