O Ring 701297-00

O-rings are designed to contain thousands of pounds of pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness.

There are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are:

Extrusion and Nibbling – O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny “bites” from the o-ring, or caused by clearance gaps.

Abrasion – One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication.

Over Compression – O-ring is flattened on both sides and may have a “ring” split along its length. Commonly caused by excessive pressure or heat.

Heat Hardening – O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity.

Weather/Ozone Cracking – O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching causes similar cracking.

This part will fit the following 242 machines

DeWALT

Black and Decker

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This item works with the following types of products:

• Miter Saw Parts
• Saw Parts
• Table Saw Parts
• Circular Saw Parts

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