-266 BLACK BUNA 90D O-RING

Buna-N O-Ring, 7.984 in ID x 0.139 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
266
Durometer
90 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
8 inch
Nominal Outside Diameter
8 1/4 inch
Unit of Measure
EA
SKU:
H90266
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Product Specification

-
APG stocks the H90266, an AS568-266 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 7.984 in (202.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.262 in (209.85 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Expect good resistance to petroleum-based oils, greases and lubricants, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

It sees regular use in agricultural equipment, hydraulic and pneumatic systems, and general industrial maintenance.

Reference part number H90266 when ordering; the item is sold individually. Unit weight is approximately 8.7385 g and nominal inside diameter is listed as 8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H90266
Description
-266 BLACK BUNA 90D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
7.984 inch (202.79 mm)
Actual Outside Diameter
8.262 inch (209.85 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity