rubber O rings

[Edwin]

Where does one buy rubber 'O' rings for model engines,and what types are for long use,i hear Vicon 'O' rings are great if you can find them.anyone care to shed some light on the subject.
Ed

[Frank Douglas]

Edwin, I have a small hit and miss model which uses a 1" dia. x 1/16 cross section O-ring. I just pick one up at my home supply store (I use Lowes or Home Depot) not sure what you might have up there in the far North. I think the ones I use are Viton and they seem to last for a long time. Maybe someone else might know more about O-ring materials than I do. I use camp stove fuel with a little 2-cycle oil mixed in. Seems to get plenty of lubrication on the top end that way. I run my little engine most all day long at the shows I go to during the summer and I have only changed the o-ring out two or three times in about 4 years. Good luck with yours.
Frank

[jlbroadhead]

viton o-rings are more chemically resistant than buna-n, you should be able to pick them up at any auto parts store or order them from a warehouser such as Mc Master Carr. If your main concern is pumping water regular old buna-n should work fine.