O-rings are made to contain thousands of PSI 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 among power tools are: • <u>Extrusion and Nibbling</u> - The 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. • <u>Abrasion</u> - 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. • <u>Over Compression </u> - The O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • <u>Heat Hardening</u> - The O-ring has a pitted or cracked surface, and is often flattened on both sides. Caused by temperature exceeding o-ring capacity. • <u>Weather/Ozone Cracking</u> - The O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching (greater that 5%) causes similar cracking.
| Brand | Model Number | Description |
|---|---|---|
| Black and Decker | 26724 | Accessories - Accessories |
| Black and Decker | 27724 | Angle Grinder - 5 Inch Angle Grinder |
| Craftsman | 900277240 | Angle Grinder - 5" Angle Grinder |
| DeWALT | DW830 | Angle Grinder - Angle Grinder |
| DeWALT | DW831 | Angle Grinder - Angle Grinder |
| DeWALT | DW831-AR | Grinder - 5" Medium Angle Grinder |
| DeWALT | DW831-B2 | Grinder - 5 In Medium Angle Grinder |
| DeWALT | W830 | Grinder - DeWalt Grinder Model W830 Parts |
| DeWALT | W831 | Grinder - DeWalt Grinder Model W831 Parts |
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
