Rear Brake refurb

[fazersharp]

[quote author=fazersharp link=topic=26027.msg311552#msg311552 date=1585694276]
[quote author=Disorderlypunk link=topic=26027.msg311551#msg311551 date=1585692437]
ooh god - delboy got mentioned so lets just jump on in
after i split, blasted and painted my rear calipers i definatly replaced mine because after a while they do harden/deform.


the problem is using the correct material and i researched like mad into this because i didnt want to F up and use the wrong stuff like nitrile which is something delboy would prob use if he needed to replace (yeah i have problems with a lot delboys stuff)
the easiest kind of o-ring to get is made of EPDM
thankfully du-pont are chemists and let us into there world by giving a compatability list
https://mscrm-dupont.secure.force.com/CRG_TlargiGuide
https://mscrm-dupont.secure.force.com/CRG_TlargiGuide


-its your brakes - its your lives - its a couple of quid i would rather not scrimp on

Not a fan of his either, not sure what you are referring to about "o rings" brought a sealing washer for rejoining 2 halves from webmoto and pistons and seals from fowlers
[/quote]


Your seal from Webmoto will be fine I'm sure.  The use of Orings in place of flat seals isn't really the way to go, yes it will work, for how long I've know idea.  An Oring is made to seal around a circumference or and edge, not flat surfaces and won't have the surface contact area of the flat seal.  Flat surface area contact will be achieved by crushing the Oring which could cause deformity, which under pressure will leek. 


Yes it will work to a point, but I wouldn't recommend it. 
[/quote]I have came across some croc whilst reading up. like, "soak the new seals in brake fluid to make them more supple and easier to fit" -- "don't get brake cleaner on them as it makes them brittle"