quick question about brakes

[10Toes]

No problem dude....

[petrolhead]

Actually, the square cut seal around the piston allows the piston to retract after braking pressure is released. It is also responsible for continually adjusting the distance the piston/brake pads are to the rotors.

This is probably more clear: http://www.ucx.com/documents/squareseal.pdf

Sir you are correct.

[LJ851]

Actually, the square cut seal around the piston allows the piston to retract after braking pressure is released. It is also responsible for continually adjusting the distance the piston/brake pads are to the rotors.

This is probably more clear: http://www.ucx.com/documents/squareseal.pdf

Yep, this man is correct. Caliper seals look like a simple square o ring but actually very specifically shaped.

I had a fascinating discussion about disc brake caliper seals with a Brembo engineer 2 years ago. He was telling me about a new low drag caliper and a couple times during our conversation i was answered with "I'm not allowed to say anymore about that"

Who would have thought they were so complex?

[sweet6e30]

2 things to say about this thread is ......."wow"! and FACEPALM!

[Wh33lhop]

Actually, the square cut seal around the piston allows the piston to retract after braking pressure is released. It is also responsible for continually adjusting the distance the piston/brake pads are to the rotors.

This is probably more clear: http://www.ucx.com/documents/squareseal.pdf

I still think OP had a certain image of how brakes worked in his head which is not quite right. I will admit I was not aware of the spring seal though, cool stuff.