1. Vulcanizable composition, proportionally distributed between at least one part A and at least one part B of the composition, where this composition includes: (i) one or more alkenyl-containing polymer containing at least one or at least one two alkenyl groups per molecule, (ii) one or more SiH-containing polymer containing at least one or at least two SiH units per molecule, and further: (iii) a catalyst for vulcanization by attaching an alkenyl-containing polymer (i) to a SiH-containing polymer (ii), and optionally additionally (iv) a blowing agent selected from any gas generating agent as a component of the reaction or during the vulcanization reaction； where the composition is distributed in a region where the region is at least in shape two corresponding reservoirs or bases, within which or on the surface of which at least one part A and at least one part B of the composition are distributed, where these parts of the composition are hermetically sealed inside by barrier means so as to x contamination, where at least one part A and at least one part B of the composition are adapted so that they can be distributed from the tanks or released from the bases by contact, facilitating their close contact and vulcanization, where the tank (s) or base (s) at least one of part A and part B of the composition is heat resistant at elevated temperature or at temperatures above 123 ° C for a period exceeding 18 hours. 2. The composition according to claim 1, where the reservoirs or bases for at least one part A and �1. Вулканизируемая композиция, пропорционально распределенная между по меньшей мере одной частью A и по меньшей мере одной частью B композиции, где данная композиция включает:(i) один или более чем один алкенил-содержащий полимер, содержащий по меньшей мере одну или по меньшей мере две алкенильные группировки на молекулу,(ii) один или более чем один SiH-содержащий полимер, содержащий по меньшей мере одно или по меньшей мере два звена SiH на молекулу, и дополнит
