Spring Valley Bus meets Corvair

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Have in mind before putting all your effort into fitting seals that were bought years ago is that rubbers have limited recommended shelf lives; initial storage & then a shorter extended period if still looking OK.
Times vs rubber type can be found online. Times are best case scenarios, assuming no UV exposure, using cool dark clean conditions.

Most seals for oil/grease are Nitrile which has an initial storage shelf life of 7yrs. Fuel seals made of Viton type rubbers are more resistant so 10yrs initial storage shelf life, as is EPDM rubber which gets used with certain brake fluids seals.

Whenever I see NOS brake hydraulic parts up for sale I always wonder how those vintage OG seals will perform once pressed into actual service.
So it’s worth pausing to think before you use a borderline aged seal kit, or to get fresher ones, before you put all the blood sweat & tears in.
 
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