THIS O-RING IS NUMBER 18 IN THE LAST PHOTO 

NEW SET OF 10 LUCAS DISTRIBUTOR O-RINGS  FOR THESE  MODELS:

1968-76 TR250, TR6

1958-79 SPRITE AND MIDGET 

1962-80 MGB 

 CLASSIC AUSTIN MINI

WILL PROBABLY FIT MANY OTHER BRITISH MODELS

 USA  SHIPPING IS FREE..