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.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Lost the lock nut
Matthew from Quincy, Florida
Lost nut and flange
Tucker from Valley View, Texas
Flange was missing. The tool was otherwise in good shape.
Eric from KETCHIKAN, Alaska
The o ring wore out and broke
Otis from San marino, California
| Brand | Model Number | Description |
|---|---|---|
| DeWALT | D28065 | Angle Grinder - Small Angle Grinder |
| DeWALT | D28065N | Angle Grinder - Small Angle Grinder |
| DeWALT | D28066 | Angle Grinder - Angle Grinder |
| DeWALT | D28066N | Angle Grinder - 5in/6in Rattail Sag |
| DeWALT | D28110 | Angle Grinder - Grinder |
| DeWALT | D28110K | Angle Grinder - 4-1/2 Sm.Ang.Grndr |
| DeWALT | D28111-AR | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28111-B2 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28111-B3 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28111-BR | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28111K-B2C | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28111S-B3 | Grinder - 4-1/2 Angle Grinder |
| DeWALT | D28111SK-B3 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28112 | Angle Grinder - Grinder |
| DeWALT | D28112-AR | Grinder - 4-1/2 Grinder |
| DeWALT | D28112-B2 | Grinder - 4-1/2 Grinder |
| DeWALT | D28112-B3 | Grinder - 4-1/2 Grinder |
| DeWALT | D28112-BR | Grinder - 4-1/2 Grinder |
| DeWALT | D28114 | Angle Grinder - Grinder |
| DeWALT | D28114-AR | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28114-B2 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28114N | Angle Grinder - Grinder |
| DeWALT | D28115 | Angle Grinder - Grinder |
| DeWALT | D28115N | Angle Grinder - Grinder |
| DeWALT | D28116 | Grinder - 115mm Small Angle Grinder |
| DeWALT | D28131 | Angle Grinder - Grinder |
| DeWALT | D28136-AR | Grinder - Small Angle Grinder |
| DeWALT | D28136-B2 | Grinder - Small Angle Grinder |
| DeWALT | D28136-BR | Grinder - Small Angle Grinder |
| DeWALT | D28140 | Angle Grinder - Grinder |
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.
