-411 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.725 in ID x 0.275 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 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:
H70411
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Product Specification

-
H70411 is an AS568-411 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with 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 compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to greases and lubricants, water, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

It sees regular use in automotive, general industrial maintenance, and fluid power.

Reference part number H70411 when ordering; the item is sold individually. Unit weight is approximately 0.0113 g and nominal inside diameter is listed as 2 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H70411
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
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity