Clutch O-Ring Viton - K-Bikes.com - Excellence in Motion
 
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post #1 of 4 (permalink) Old Apr 29th, 2019, 3:40 pm Thread Starter
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Clutch O-Ring Viton

Well, I've got the inevitable oil seal failure on my 98 RS. I'm ordering parts and want to make sure that I replace the $1.50 garbage O-Ring with one made of Viton or better. Any leads or sources?
Thanks
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post #2 of 4 (permalink) Old May 1st, 2019, 9:56 pm
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Location: Hamilton, Waikato, New Zealand
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Viton 75 O-ring
19.0 x 4.0
$0.50 each

Maryland Metrics has a $10.00 minimum order value.



contact - Dennis Baryza e-mail: <mailto:[email protected]>
MARYLAND METRICS P.O.Box 261 Owings Mills, MD 21117-0261 USA
phones: 800-638-1830/410-358-3130 faxes: 800-872-9329/410-358-3142
url: <http://mdmetric.com>
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post #3 of 4 (permalink) Old May 2nd, 2019, 1:15 am
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Location: Seattle, WA, USA
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Garage
I don't think you'll do much better then Viton. It can stand up to continual 500 degrees F and has 3 times the ware resistance of Neoprene (standard "O"ring material). I have also machined the same material in solid round-stock form. It makes excellent crush-rings, sealing sleeves, whatever.
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post #4 of 4 (permalink) Old May 2nd, 2019, 10:13 am
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Plan B

You can also bypass the material that ruins the O ring - Dot 3 brake fluid as the hydraulic medium. Use Dot 5 in this system, or ATF. That way, if the servo lets go, it will leak stuff that won't ruin that crankshaft O ring. I did this on my bike (98 K1200RS - Red, of course) about 5 years ago, and no problems to date.

FYI I am also gonna bypass the ABS system when I get back from a trip to the 4 Corners area (pickup + 5th wheel camper & wife-unit + dogs). I found BMW makes a bypass-the-ABS part for this bike w/ABS II - I'll have a report when I get it all sealed up.
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