How to Determine What Size Replacement Trailer Grease Seals Are Needed?

Question:

I have a 4x8 trailer that needs new bearing seals . what size double lip seals do i need here is a picture. Looks like 1 3/4inch seal?

asked by: Fred

Expert Reply:

Grease seals are a very specific fit and not something we can get a good read on with a tape measure. You will instead need to use a digital caliper like # PTW80157 to measure the spindle at that seal location and then the outer diameter of the seal where it fits the hub. When you have both the inner and outer diameter of the seal two points to the right of the decimal then we can help you with the correct replacement.

I've linked the page to all the replacement options we carry to assist as well as a video to help.