Brake caliper gallery seal

dag019 said:

One of the rear calipers on my 110 is now leaking from the piston seal so is in need of another rebuild. I have previously rebuilt all the calipers with stainless piston so I am happy with how to rebuild them. The problem I have is which gallery seals to fit. Going back though my invoices I have I have previously ordered two different gallery seals :
RTC1137
17H8764L
Which one is the correct gallery seal for a 110 rear caliper?

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tottot said:

Recently a mate bought new caliper's and they both leaked straight away. They were from the flea bay and just looking at the rough castings told me they were rubbish and on opening found the gallery seal rings were undersize causing the leak. Reported to trading standards.

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slomofo said:

RTC1137 are for the rear Calipers

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dag019 said:

Mine are the originals, which I have rebuilt once already using ss pistons when I did this I split them, painted, replaced gallery seals, new oem piston seals etc, and they have been problem free up until now. I changed the rear pads recently and clearly did not clean the piston well enough before pushing it back so now the piston seal is leaking. Easiest way to replace is to split them again, for the price of a seal I will replace them while it is apart.



Many thanks, Definitely for a 110? I only ask because I made the mistake when buying the ss pistons and got a smaller set for a 90 first time around!

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