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-376 BLACK BUNA 70D O-RING

Buna-N O-Ring, 9.725 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Out of Stock
Est. Ship Date
21 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
376
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
9 3/4 inch
Nominal Outside Diameter
10 1/8 inch
Unit of Measure
EA
SKU:
H70MD376

Product Specification

-
This o-ring is supplied in AS568-376 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 9.725 in (247.02 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.145 in (257.68 mm), catalogued under part number H70MD376. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is valued for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Expect good resistance to petroleum-based oils, propane and butane, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to strong acids or ozone and direct sunlight will shorten service life.

This o-ring is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include agricultural equipment, construction equipment, and automotive.

Order part number H70MD376, sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H70MD376
Description
-376 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
9.725 inch (247.02 mm)
Actual Outside Diameter
10.145 inch (257.68 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable