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-354 BLACK BUNA 70D O-RING

Buna-N O-Ring, 5.1 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
354
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
5 1/8 inch
Nominal Outside Diameter
5 1/2 inch
Unit of Measure
EA
SKU:
H70MD354

Product Specification

-
This o-ring is supplied in AS568-354 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 5.1 in (129.54 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.52 in (140.21 mm), catalogued under part number H70MD354. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The compound resists greases and lubricants, propane and butane, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.

This item is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and fluid power.

This item is sold individually under part number H70MD354. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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
H70MD354
Description
-354 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
5.1 inch (129.54 mm)
Actual Outside Diameter
5.52 inch (140.21 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable