HD•350 creates exceptionally elastic and resistant seals. It fills all gaps and surface irregularities. It passes even the most stringent tests performed on seals. It self-vulcanizes at room temperature and resists thermal changes from -70 to +260°C with peaks of up to 350°C. It resists water, gas, petrol, mineral spirits, oil and anti-freeze products. Resistant also to strong vibrations. When disassembling, it is easily removed and refitted.