DM Midi Water Pump O-Ring

I've searched every auto parts store, lawnmower shop, hardware store, motorcycle shop in town and I can not find a replacement for my 2002 DM Midi water pump o-ring drive. I am desperate. I'm supposed to practice this weekend. Does anyone know a SIZE, BRAND and SUPPLIER that I can find one at?? Size is most important. I'm headed to the city tomorrow and I'm sure I can find a store with O-rings. The only places I didn't get to today were plumbing supply stores.

I get them at ACE hardware store in the O-ring section and they are a # 262

I went to our local ACE that has been in business for over 90 years. Unfortunately it was filled with idiots. And God forbid I mentioned the application and it was all over. If I had an actual length it would be great. I'm driving to the valley (2hr round trip) to a seal store I found this morning. Hopefully with bike in hand I can find the right one. The guy I talked to sounded humored with my troubles. He sounded like he thought he was the pot of gold at the end of the rainbow. We'll see.

That #262 is the part number you will find anywhere that sells big o-rings. Ace has them in drawers in the misc section of hardware. Do you still have the old o-ring?

Well, he was the pot of gold at the end of the rainbow. He had 10,000+ o-rings in stock!! He measured the pulley sizes and the distance apart, whipped out the old calculator and came out to a rough 7.125", probably using Nanophysics and Nucleargeometry! That corresponds with the #262 Parker o-ring number.

So this is what I learned:

1. Parker manufactures the o-rings
2. #262 is a standard o-ring number that you'll find within even a six, eight or ten digit part number from someone else like ACE Hardware.
3. #262 is a 7.000" I.D. x 7.125" O.D.
4. The DM pulleys are a standard 1/8" o-ring channel @7.133"
5. The DM o-ring is the same as the Polini o-ring.

I can't tell you what I paid for the o-rings because I couple for free! Super nice old guy. AMAZING customer service. And a whole lot of knowledge on all types of seals. He IS the pot of gold at the end of the rainbow.

Good to see you found your belt in time for this weekends blast of fun.

Just make sure you keep a good eye on your new belt since the old 1 snapped. If there is a bad bearing in the water pump they will go fast.