568-225 BUNA 70 SQUARE CUT RINGS

Buna-N Square-Cut Ring, 1.859 in ID x 0.139 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
2 Nov 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
225
Durometer
70 Shore A
Cross Section Type
Square
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
1 7/8 inch
Nominal Outside Diameter
2 1/8 inch
Unit of Measure
EA
SKU:
SH70225
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Product Specification

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Ordered as SH70225, this is an AS568-225 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring supplied with an inside diameter of 1.859 in (47.22 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.137 in (54.28 mm). The square-cut ring provides an economical lathe-cut alternative where a moulded o-ring is not required.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The compound resists hydraulic fluids, water, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes a rectangular section that will not roll in the groove and simple lathe-cut manufacture at low tooling cost. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Typical settings include construction equipment, general industrial maintenance, and fluid power.

Stocked as SH70225 and sold individually. Unit weight is approximately 2.292 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
SH70225
Description
568-225 BUNA 70 SQUARE CUT RINGS
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
1.859 inch (47.22 mm)
Actual Outside Diameter
2.137 inch (54.28 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6017
Product Category
O-Rings - Square/Quad - Commodity