ALLOY CAP & SEAL. GIRLING DISC BRAKE MASTER CYLINDER. FORD ANGLIA PREFECT (1958-59) 3/4" bore REAR BRAKE CYLINDER KIT-SP2027. BLACK NITRILE RUBBER SEAL (57 x 46 x 2mm) Not suitable for E10 Petrol. TRIUMPH TOLEDO 1300 (1970-76) 3/4" bore REAR BRAKE CYLINDER KIT-SP2027.