View Full Version : Cup seal

01-01-2007, 01:49 PM
:confused: how do i fix it because mine is leaking. i know it involves sanding but what kind of grit and how do i do it?:confused:

01-01-2007, 02:59 PM
i had the same problem but i returned my pilot and they told me it was the valve...make sure u check the valve, but this is what Halucin8 told me,take the cupseal out and lay a piece of very smooth sandpaper 1000 grit or better and put it on a flat surface then rub the cupdeal in a figure 8 motion a couple of times then reinstall. should work much better

01-01-2007, 03:25 PM
thanx for the info:) uh where could i get 1000 grit sandpaper? wally world doesnt have it and i havent been able to look in home depot yet.

01-01-2007, 04:12 PM
Look in the Automotive section - the Wal-Mart here carries it there.

I didn't even know about the sandpaper thing...cool tip!

01-01-2007, 06:37 PM
it flattens out the seal and roughs/softens the sealing edge to make a better seal. when i went to the 32 degrres turbo valve i went through all three of my cupseals and none of them would seal. Once i sanded down the sealing side making sure it was flat and soft i haven't had a problemn in months and i shoot atleast a case every sunday in the woods.

01-01-2007, 07:05 PM
Lapco makes a great replacement:

01-05-2007, 05:26 PM
just about every automotive shop carries it its used to wet sand cars

on another note would regulating the air preasure help with this