Cov khoom siv tseem ceeb ntawm cov roj hmab bushings muaj xws li roj hmab ntuj, nitrile roj hmab, silicone roj hmab, fluororubber, ethylene propylene diene monomer (EPDM), styrene -butadiene roj hmab (SBR), thiab butyl roj hmab, thiab lwm yam. Txhua yam khoom tsim nyog rau kev ua haujlwm sib txawv vim nws cov khoom sib txawv.
Ntuj Roj Hmab (NR): Nws muaj elasticity siab, zoo heev tsim kua muag thiab puas kuj, ua rau nws haum rau daim ntaub ntawv uas yuav tsum tau zoo cushioning thiab shock absorbing, xws li ncua kev kawm ntawv bushings. Txawm li cas los xij, nws cov roj tsis kam, hnyav tsis kam, thiab kub tsis kam yog qhov tsis zoo, thiab nws qhov kev ua haujlwm kub feem ntau tsis tshaj 60 degree.
Nitrile Roj Hmab (NBR): Nws muaj cov roj zoo heev thiab kub ua haujlwm, tshwj xeeb tshaj yog tiv thaiv roj av thiab aliphatic hydrocarbon roj, ua rau nws tsim nyog rau oily ib puag ncig. Nws qhov kev ua haujlwm kub tuaj yeem ncav cuag 90 degree, thiab nws muaj ntau yam kev siv.
Silicone Roj Hmab (VMQ): Nws tsis yog - tshuaj lom thiab tsis muaj ntxhiab, nrog rau qhov kub thiab txias tsis kam (-60℃~ 100 degree), thiab muaj zog tshuaj inertness. Nws feem ntau siv rau hauv cov khoom noj, tshuaj, thiab lwm yam kev siv nrog kev tu cev.
Fluororubber (FKM): Kev tiv thaiv zoo rau cov kua qaub, alkalis, roj, tshuaj corrosion, ozone, thiab atmospheric aging. Haum rau ib puag ncig hnyav nrog cov xov xwm corrosive heev, tab sis kuj kim heev.
Ethylene Propylene Diene Monomer (EPDM): Muaj zog tiv thaiv oxidation, ozone, thiab corrosion. Zoo adaptability rau huab cua hnyav, ruaj khov lub cev, thiab tus nqi qis. Muaj peev xwm tiv taus kev khiav hauj lwm kub txog li 150 degree, ua rau nws yog ib qho zoo heev vibration damping khoom.
Styrene-Butadiene Roj Hmab (SBR): Kev ua haujlwm zoo, hnav tsis kam, thiab tus nqi qis. Feem ntau siv rau hauv daim ntawv thov xav tau siab elasticity tab sis tsis muaj roj tsis kam.
Butyl Roj Hmab (IIR): Zoo heev airtightness thiab poob siab absorbing kev ua tau zoo, muaj zog impermeability, haum rau daim ntaub ntawv uas yuav tsum tau sealing kev ua tau zoo.
