o rings for riva and greater yamaha head

Posted this few years ago its in the techFAQ


riva head oring sizes 701/760
Shell seal:1/16" Bulk Buna-N
From the top down:
Spark Plug:118 Buna
2nd :031 Buna
3rd :043 Buna
Compression chamber : 153 viton
 

#ZERO

Beach Bum
Location
Florida - U.S.A.
McMaster-Carr Riva 701/760 Head O-rings:

Combustion Chamber, viton, -153, pack of 2: 9464K114
Cord stock for shell seal, buna: 9407K21
Spark Plug, buna, -118, pack of 100: 9452K82
2nd from top, buna, -031, pack of 100: 9452K118
3rd from top, buna, -043, pack of 50: 9452K132
 
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