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-411 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.725 in ID x 0.275 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
411
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 3/4 inch
Nominal Outside Diameter
3 1/4 inch
Unit of Measure
EA
SKU:
H70MD411

Product Specification

-
H70MD411 is an AS568-411 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.725 in (69.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.275 in (83.19 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. This material stands up to many alcohols, petroleum-based oils, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or strong acids are present.

This o-ring is metal detectable for HACCP and foreign-body control programs. Typical settings include fluid power, construction equipment, and agricultural equipment.

Stocked as H70MD411 and sold individually. Nominal inside diameter is listed as 2 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H70MD411
Description
-411 BLACK BUNA 70D O-RING
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
2.725 inch (69.22 mm)
Actual Outside Diameter
3.275 inch (83.19 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable