Explanatory notes
… to seal sparking plugs, engine blocks and sumps, exhaust pipes, radiators, etc., and to fill or stop certain joints. … acid-resistant stoppings, and also to bond or fix pieces in place. (8) Mastics based on plaster . These are … the addition of water, and used to secure screws, gudgeon pins, dowels, hooks, etc. (9) Mastics based on plastics …