Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: vaqua55 on September 23, 2009, 21:25:56

Title: Looking for o-ring KIT for 68 250SL Fuel Pump
Post by: vaqua55 on September 23, 2009, 21:25:56: I recently started to rebuilt my Fuel Pump and am in need of finding the o-rings that go in it (I believe total of 5 pcs), what material are they to handle the Fuel, what sizes are they and where can I get them as a package or individually.

This is for the SHORT FUEL PUMP.

Thanks for your input.
Title: Re: Looking for o-ring KIT for 68 250SL Fuel Pump
Post by: George Des on September 23, 2009, 21:47:09: A proper rebuild will require the o-rings, metal seals and brushes. Send me an e-mail if you need a kit for this.

George Des
Title: Re: Looking for o-ring KIT for 68 250SL Fuel Pump
Post by: RickM on September 29, 2009, 14:35:45: Quote from: vaqua55 on September 23, 2009, 21:25:56
I recently started to rebuilt my Fuel Pump and am in need of finding the o-rings that go in it (I believe total of 5 pcs), what material are they to handle the Fuel, what sizes are they and where can I get them as a package or individually.

This is for the SHORT FUEL PUMP.

Thanks for your input.

Buna-n is the most common material used and is resistant to the effects of gasoline. However, as formulas evolve with new additive packages, a proactive individual would consider Viton O-rings.
Further info: http://www.biofuels.coop/archive/viton.pdf (http://www.biofuels.coop/archive/viton.pdf)

One source is www.mcmaster.com (http://www.mcmaster.com) for the individual pieces. If you go this route please let us know the sizes.

George: Does your kit utilize Viton O-rings...or is it an option?
Title: Re: Looking for o-ring KIT for 68 250SL Fuel Pump
Post by: George Des on September 29, 2009, 22:05:46: I've been using nitrile-same as buna-n---considering that this is what was used in the originals and they last a long time, Viton for this purpose in my opinion is somewhat of an overkill
Title: Re: Looking for o-ring KIT for 68 250SL Fuel Pump
Post by: RickM on September 30, 2009, 14:12:15: IMHO, the minimal increase in cost is worth it. Did you read the DuPont article I linked to? Fuel is not the same as when our cars were built.