This is the suction hose between the air conditioning compressor and the expansion valve. 1981-1998 Sliver Spirit, Sliver Spur, Mulsanne, Turbo R  (From Vin 20001 to 24496)  

This is the hose between the heater tap and the feed pipe from the matrix. 1987 Spirit, Spur, Mulsanne, Corniche, Eight, Brooklands (from VIN 20001 onward)

This O ring has a number of applications on the air conditioning system of all cars from 1965-1986. Including, between the condenser and the receiver drier on the Silver Shadow.  It has an...