Q-266 BUNA 70 Q RING

Buna-N Quad-Ring, 7.984 in ID x 0.139 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
266
Durometer
70 Shore A
Cross Section Type
Quad
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:
QH70266
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Product Specification

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This quad-ring is supplied in AS568-266 black Buna-N (Nitrile) 70 Shore A measuring 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), catalogued under part number QH70266. It provides a dual sealing band on each contact face for improved reliability.

This material stands up to propane and butane, water, and greases and lubricants. Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

It sees regular use in automotive, agricultural equipment, and general industrial maintenance.

Stocked as QH70266 and sold individually. Unit weight is approximately 7.5943 g and nominal inside diameter is listed as 8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
QH70266
Description
Q-266 BUNA 70 Q 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
6017
Product Category
O-Rings - Square/Quad - Commodity