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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2017 Posts: 32 'Bolter | | 'Bolter Joined: Oct 2017 Posts: 32 | Hello All, I have got a chevrolet 6400 and I need to souce some seals for the brake cylinders. They dont have cup seals, but a ring seal in a groove on the pistons. Does any body know where i can get some. I have tried chevs of the 40s. Filling Station. And Jim Carter but no luck. Thanks Howard | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | I'd suggest NAPA and I'd also suggest going to Ace Hardware to see if they have "O" rings that size....and if it is indeed an "O" ring then try McMasterCarr....or even grainger?
They're out there so hang tight. Someone smarter than me will have a definitive answer.
OH, Send "3B" a PM as he is very good at this sort of thing. Like he has a barn, no two barns full of big trucks!
3B, chime in my friend. | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | what year truck are you working on and what bore cylinder? Both Rock Auto and Napa have them for my 1958 6400. Mine were 1 1/2" cylinder bore, UP147 from Napa and WK147 from Rock Auto. | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Howardwade, Achipmunk and guys, 69Cuda is correct the ring type cup numbers for 1 1/2" wheel cylinders from Napa is UP147 from RockAuto WK147 this number applies to rear wheel cylinders on the 6000 series from 1951 through 1960, hope that helps. | | |
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