1).materials:PTFE and metal 2).bear the high low temperature 3).Seal off high-handed oil medium3.5mpa ,bear high speedabove 30m/s,bear partialityPartiality amounts0.5mm0.75mm.bear corrosionAll sour alkalis and chemistry matter 4).Life time is 2-3 times of rubber grease seal 5).Seal off effect well,In being able to achieve within equipment life-span, zero discloses,bear high pressure may reach more than 15 GMpa. 6).Apply to vacuum pump , high-pressure pump , other higher request particular kind pump higher authority broadly
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