You have no items in your shopping cart.

-408 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.35 in ID x 0.275 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Out of Stock
Est. Ship Date
22 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
408
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
2 3/8 inch
Nominal Outside Diameter
2 7/8 inch
Unit of Measure
EA
SKU:
H70MD408

Product Specification

-
Part number H70MD408 is an AS568-408 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.35 in (59.69 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.9 in (73.66 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. The compound resists propane and butane, many alcohols, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or ozone and direct sunlight.

This o-ring is metal detectable for HACCP and foreign-body control programs. It sees regular use in fluid power, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H70MD408. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H70MD408
Description
-408 BLACK BUNA 70D O-RING
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
2.35 inch (59.69 mm)
Actual Outside Diameter
2.9 inch (73.66 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable