{HEAD ~ The outer surface} 58 has {TAIL ~ a first circumferentially extending groove} 64 which is slightly below the level of the lip 62 and accommodates a first annular ring seal 66 and a second circumferentially extending groove 68 near to the bottom of the sleeve which accommodates a second annular ring seal 70 
has
{ HEAD ~ The outer surface } 58 has { TAIL ~ a first circumferentially extending groove } 64 which is slightly below the level of the lip 62 and accommodates a first annular ring seal 66 and a second circumferentially extending groove 68 near to the bottom of the sleeve which accommodates a second annular ring seal 70
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH