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-394 BLACK BUNA 70D O-RING

Buna-N O-Ring, 24.94 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Out of Stock
Est. Ship Date
20 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
394
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
3/16 inch
Nominal Inside Diameter
25 inch
Nominal Outside Diameter
25 3/8 inch
Unit of Measure
EA
SKU:
H70MD394

Product Specification

-
Ordered as H70MD394, this is an AS568-394 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 24.94 in (633.48 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 25.36 in (644.14 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against greases and lubricants, hydraulic fluids, and water. Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or automotive brake fluid.

The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as H70MD394 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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
H70MD394
Description
-394 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
24.94 inch (633.48 mm)
Actual Outside Diameter
25.36 inch (644.14 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable