hydraulic compatible grease

[JMLaux]

Anyone know of a grease that would be compatible with the brake/clutch fluid inside of the hydraulic system?

I'm in the process of rebuilding my clutch master cylinder. It wasn't that old, it just sat off the car for quite a bit and worried it got some contaminates in it. When I took the master cylinder apart I noticed there was some grease around the piston. I want to rebuild it using grease as well I just wasn't sure of any grease that won't interact badly with the clutch fluid. The most I have found online is the mention of a lithium soap base glycol grease and a red rubber grease. Some of the classic British car sites mention a Girling red rubber grease so I think I am on the right track there. Just curious if anyone here might know of anything?

[DMCMW Dave]

PBR Rubber grease RG17. It's intended for use inside brake calipers etc. so it is compatible with brake fluid.


Anyone know of a grease that would be compatible with the brake/clutch fluid inside of the hydraulic system?

h?

[David T]

I have never used grease there. All you do is wipe some brake fluid on the bore, the piston and seal before assembling. You might want to wipe the parts down with alcohol first to make sure they are clean. The grease is probably meant to protect the parts while being stored. If you use it right away you don't have to worry about storage. Once you start using it the brake fluid will wash the grease away anyway.
David Teitelbaum