O-Rings for Caliper Halves
Thread Starter
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,248
From: US-PNW
O-Rings for Caliper Halves
Does anyone know the measurements of the small o-rings that seal the caliper halves?
ID?
OD?
One of my '72's front calipers is definitely leaking between the halves. I'd like to obtain the replacements before removing and tearing the caliper down. Why, you ask, don't I seek a warranty replacement? Because I use DOT 5 fluid and I'm sure they won't do anything for me.
ID?
OD?
One of my '72's front calipers is definitely leaking between the halves. I'd like to obtain the replacements before removing and tearing the caliper down. Why, you ask, don't I seek a warranty replacement? Because I use DOT 5 fluid and I'm sure they won't do anything for me.
Race Director
Joined: Nov 2006
Posts: 13,248
Likes: 7,840
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
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Cruise-In VIII Veteran
Well, don't have the measurements. Sorry. But most O ring master kits would likely have a suitable replacement. Break one down and run to the auto parts or a good bearing and seal shop. match it up, run home and put it together.
Thinking of course you have alternative transportation.
I too run Dot 5. have for 25 years or more in my 77.
nothing in Dot 5 will destroy that O ring.
Thinking of course you have alternative transportation.
I too run Dot 5. have for 25 years or more in my 77.
nothing in Dot 5 will destroy that O ring.
Thread Starter
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,248
From: US-PNW
Thread Starter
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,248
From: US-PNW
Well, don't have the measurements. Sorry. But most O ring master kits would likely have a suitable replacement. Break one down and run to the auto parts or a good bearing and seal shop. match it up, run home and put it together.
Thinking of course you have alternative transportation.
I too run Dot 5. have for 25 years or more in my 77.
nothing in Dot 5 will destroy that O ring.
Thinking of course you have alternative transportation.
I too run Dot 5. have for 25 years or more in my 77.
nothing in Dot 5 will destroy that O ring.
Le Mans Master
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
fyi i warranted 2 front calipers recently from 2 sponsor vendors.. lone star...one at a few months and another 11 months .. one year warranty... both were replaced one even paid shipping..BUT they said if the return is non DOT3 they will not honor warranty.
they did mention the leaks they do get were from poor alignment or missing small o rings leaking from the halves.. mine was from pistons on both
they did mention the leaks they do get were from poor alignment or missing small o rings leaking from the halves.. mine was from pistons on both
Melting Slicks
Joined: Mar 2010
Posts: 2,270
Likes: 375
From: Randolph nj
I have rebuilt about 20-30 of these calipers always use the raybestos brand rebuild kits USA made the rubber is much softer then other brands
always check the aluminum pucks for ware on the edges and corrosion in the stainless sleeves and replace the bleeders they always seem to crush on the ends and make a bad seal
always check the aluminum pucks for ware on the edges and corrosion in the stainless sleeves and replace the bleeders they always seem to crush on the ends and make a bad seal
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