Fire extinguishing compositions; flame-retardant compositions; chemical substances for use in the field of fire protection and fire prevention; radiation shielding compositions; radiation resistant compositions; radiation blocking compositions; radiation alternating compositions

Rubber, polymer materials vulcanizable to rubber; heat-expandable polymer materials vulcanizable to rubber, extruded or injection moulded sleeves and/or blocks of these materials for holding cables and/or pipes in conduits and/or for filling cable and/or pipes conduits