<VV> Viton O rings
sales at corvairunderground.com
Tue Jun 30 12:34:03 EDT 2015
I can't definitively say when Viton O rings were used in Corvairs.
But we know that they re mentioned as a good idea in Bill Fisher's How
To Hotrod Corvair Engines circa 1969. The biggest obstacle was the cost.
Of the over 7000 different new parts we've sold a set of 36 Viton O
rings is noted because in 1974 we sold them for $8.95 a set- Now we
still sell them for $8.95 a set. If you take into account actual (as
opposed to government "official") inflation that means in 1974 Corvair
people were paying about $100.00 a set in 2015 money.
Older members will remember Safari Enterprises out of Washington
state who sold Viton O rings and supplied nearly all of us back in the 70's.
I can remember having a lot of trouble talking Corvair people into
buying them back then. Bill Hubbel mentions that the Lambrecht car
still has neoprene O rings in it, which is entirely possible. They're
probably just waiting for the first high heat cycle and - crrrrrrrack -
they'll start spewing oil everywhere. Viton only has about 30-50
degrees higher failure rate than neoprene. What Viton has is the ability
to not harden with age.
And just for the fun of it - all materials have their preferred uses
- so please stay away from Viton seals like crank seals etc. The well
documented failure rate is right up there. But for O rings they are
unsurpassed in reliability.
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