-435 BLACK BUNA 70D O-RING

Buna-N O-Ring, 5.725 in ID x 0.275 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
435
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/4 inch
Nominal Inside Diameter
5 3/4 inch
Nominal Outside Diameter
6 1/4 inch
Unit of Measure
EA
SKU:
H70435
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Product Specification

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APG stocks the H70435, an AS568-435 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 5.725 in (145.42 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.275 in (159.39 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The compound resists greases and lubricants, hydraulic fluids, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.

You will find this material specified across hydraulic and pneumatic systems, construction equipment, and agricultural equipment.

This item is sold individually under part number H70435. Unit weight is approximately 0.0226 g and nominal inside diameter is listed as 5 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H70435
Description
-435 BLACK BUNA 70D O-RING
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
5.725 inch (145.42 mm)
Actual Outside Diameter
6.275 inch (159.39 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity