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-409 BLACK BUNA 70D O-RING

Buna-N O-Ring, 2.475 in ID x 0.275 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
409
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 1/2 inch
Nominal Outside Diameter
3 inch
Unit of Measure
EA
SKU:
H70MD409

Product Specification

-
APG stocks the H70MD409, an AS568-409 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.025 in (76.84 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to petroleum-based oils, propane and butane, and greases and lubricants. Buna-N (Nitrile) is known for low compression set under sustained load, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or automotive brake fluid call for a different compound.

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

Stocked as H70MD409 and sold individually. Nominal inside diameter is listed as 2 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H70MD409
Description
-409 BLACK BUNA 70D O-RING
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
2.475 inch (62.87 mm)
Actual Outside Diameter
3.025 inch (76.84 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable