-038 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.614 in ID x 0.07 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
38
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
1/16 inch
Nominal Inside Diameter
2 5/8 inch
Nominal Outside Diameter
2 3/4 inch
Unit of Measure
EA
SKU:
H70MD038
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Product Specification

-
APG stocks the H70MD038, an AS568-038 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or automotive brake fluid call for a different compound.

The compound is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include fluid power, automotive, and hydraulic and pneumatic systems.

This item is sold individually under part number H70MD038. Nominal inside diameter is listed as 2 5/8 inch. 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
H70MD038
Description
-038 BLACK BUNA 70D O-RING
Actual Cross Section
0.07 inch (1.78 mm)
Actual Inside Diameter
2.614 inch (66.4 mm)
Actual Outside Diameter
2.754 inch (69.95 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable