USD fork oil seal size?
 

Does anybody know the size of a USD fork oil seal? One of mine has suddenly started to leak big style.

Jonathan.

Re: USD fork oil seal size?
 

Fork oil seals come in a wide variety of sizes. ;) Please remind us what motorcycle you own. :)

If all else fails, you can slide the dust wiper down, and measure it. ;) The dimensions of the dust wiper will frequently allow you to identify the dimensions of the oil seal. :)

Also, I suggest you try cleaning your fork oil seals. Sometimes cleaning the oil seal will remove a speck of grit, and stop the leak. You can use a "Seal Mate," a piece of 35mm film negative, a feeler gauge, or a paper business card to clean the oil seal. ;)

http://www.mxboards.com/forums/viewtopic.php?t=19
http://www.amazon.com/Motion-Pro-Sea.../dp/B0039LDF4A

Spud :)

Apologies, I was in a bit of a rush earlier. To give the bike it's full title it's a Hongdou MD250GY. I've had a look at the seal and can't see any size visible, I'd take it to bits and pop down to the bearing suppliers but I already have the car in bits, and as it's 20 years old some parts are taking a bit of finding. As a stop gap I'll put some thicker oil in the forks and set about it when the car's fixed. I don't think cleaning will cure it, it's now done over 32k km and I think it will be due a new set.

Jonathan.