I imagine Copper Grease would fulfill the same function, happy to be corrected though.

I have an exploded view of the HL3 brakes and it calls it a dust cover. It is in the OWM 796 book page 135.


2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev