Washer, quadrant spindle oil retaining, cork (gasket) / seal, fitted to Norton upright gearbox by later military models and post war. can be retrofitted to earlier models. Not listed separately in pre 1946 part lists. Can be used for 9155 - Rocker box cork washer oil seal pre 1937 OHV motorsOriginal Norton part number:968?; A2/345 - Quadrant spindle oil retaining washer (cork)9155 - Rocker box cork washer