Grinder Seals and Gaskets

This O-ring creates a tight seal within the spindle lock assembly, helping prevent oil leaks while keeping dust and debris out of the gearbox. Made from durable rubber and measuring approximately 0.25 × 0.25 × 0.25 inches, it supports reliable protection and long-lasting performance. Replacing a worn or damaged O-ring helps maintain proper sealing, protect internal components, and ensure smooth tool operation.

This part is sold individually. The o-ring goes on the guard and is made of rubber. A set of pliers and a screwdriver might be needed during the installation process. It may become broken and will need to be replaced. This part is an OEM from DeWALT for use in grinders.

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. Of the many causes for O-Ring failure, 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</u> - O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity.<u>Weather/Ozone Cracking</u> - 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 is an authentic manufacturer sourced replacement part designed for use with Dewalt grinders. It helps to provide an air tight seal for the gearbox. It is made out of rubber material and it is sold individually. To complete this repair you will need a spanner wrench.

This authentic manufacturer-supplied washer is specially designed for use with DeWALT angle grinders. It is a special hardware that helps to provide a tight seal between connected components. This is an identical replacement for a missing or a damaged O-ring that was installed on a new unit. One durable rubber part is included. Refer to the appropriate diagrams for your model to ensure the proper replacement procedure. A screwdriver will be needed to take apart and reassemble the housing to perform this repair.

This is a manufacturer sourced replacement seal. It is specially produced for use with Dynabrade sanders. This is one of the seals for the tip valve/inlet bushing. Over time seals tend to shrink and crack allowing for air leaks. At that time it should be replaced to maintain top performance. It is made out of rubber material and it is sold individually. Replacing this item you would need a wrench to replace this item.

It is a genuine replacement o-ring which is supplied by the original equipment manufacturer for use with Dynabrade power tools. This item is utilized to provide an air-tight seal between connected parts, please make sure to check appropriate diagram of your model for the correct use and location of this component. Over time o-rings tend to deteriorate and crack eventually requiring replacement to maintain peak performance. It is a high-quality part that is made of durable rubber material and it is sold individually.