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Q-310 BUNA 70 Q RING

Buna-N Quad-Ring, 0.475 in ID x 0.21 CS, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
20 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
310
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
3/16 inch
Nominal Inside Diameter
1/2 inch
Nominal Outside Diameter
7/8 inch
Unit of Measure
EA
SKU:
QH70310

Product Specification

-
Ordered as QH70310, this is an AS568-310 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.475 in (12.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 0.895 in (22.73 mm). The quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. This material stands up to water, hydraulic fluids, 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 strong acids or polar solvents are present. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

You will find this material specified across hydraulic and pneumatic systems, automotive, and fluid power.

QH70310 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
QH70310
Description
Q-310 BUNA 70 Q RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
0.475 inch (12.07 mm)
Actual Outside Diameter
0.895 inch (22.73 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6017
Product Category
O-Rings - Square/Quad - Commodity