Leli yibhokisi le-cushion air kanokusho, elinezici ezimbili ezikhethekile: 1. Isivalo sifakwe isitayela se-gasket, futhi iphaneli ephezulu ingenziwa ngepulasitiki, isikhumba, idayimane, noma amapaneli aphezulu asheshayo; 2. Lo mkhiqizo uklanywe ngombuthano ophakathi nendawo, okuzokwenza ubukeke ugqinsile futhi unobukhazikhazi.