**4366-366Y MINNESOTA RUBBER QUAD RING

Buna-N Quad-Ring, 7.225 in ID x 0.21 CS, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
28 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
366
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
7 1/4 inch
Nominal Outside Diameter
7 5/8 inch
Unit of Measure
EA
SKU:
HQ4366

Product Specification

-
This quad-ring is supplied in AS568-366 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 7.225 in (183.52 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 7.645 in (194.18 mm), catalogued under part number HQ4366. It provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. This material stands up to many alcohols, hydraulic fluids, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or ketones. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

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

Reference part number HQ4366 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Item
HQ4366
Description
**4366-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter
7.225 inch (183.52 mm)
Actual Outside Diameter
7.645 inch (194.18 mm)
Actual Cross Section
0.21 inch (5.33 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6018
Product Category
O-Rings - Square/Quad - Premium