... joint. Rubber expansion joint, is also known as shock absorber, pipe shock absorber, shock proof box and soft joint. It is ... structure when it works and have strong shock absorption. In pipe system it is the ideal for compensating expansion and contraction ... reach -30 °C ~ 250 °CApplicablen MediaAir,compressed air,water, seawater, hotwater, acid, alkali and so on.Specifications SizeDN(mm)Length(mm ...