The cork compound seals are available.A lot of owners don't crimp, just partially slide on the hose and then use a smidge of Wellseal or similar on the inner pipe then push on the rest of the way. Do not use Silastic.Try VOC spares or Kemp's for the gasket and follow their advice to fit. The adhesive needs to be petrol-proof.Gasket is part no. T26/1