Isihlalo esingashintshwa yisihlalo esithambile, isihlalo se-valve Esishintshayo, lapho isihlalo se-valve sonakalisiwe, isihlalo se-valve kuphela esingashintshwa, futhi umzimba we-valve ungagcinwa, oyonga kakhulu.Isibambo se-aluminium asikwazi ukugqwala futhi sinomphumela omuhle wokunqanda ukugqwala, Isihlalo se-EPDM singathathelwa indawo yi-NBR, PTFE, Khetha ngokuya ngekhasimende.