TFM Protection Ring are used on Milestone Microwave Digestion vessels for Sample Preparation Systems. Brand Name:CFDPLAS Model Number:CFD-MWD-AS023 Dimensions:customer made, Thread Standard:Metric Standard System Material:TFM(PTFE), Color:Natural color. Place of Origin : Changzhou, China Temperature Range: -100~+220ºC Features: Made of virgin Purity PTFE material(TFM). Surface smooth finish,no burrs,no marks,homogenous,non-porous surface. Duplicate use. Packing: 1PC/Bag. M.O.Q.: 30 PCS Dedicated to Milestone Microwave Digestion Instrument (ETHOS 10)and related digestion systems. Part Number:PN-35117 PSU Pressure Screw,M26X37mm. Part Number:MWD-AS005 Pressure Screw.PSU. Part Number:MWD-AS005A Pressure Screw.PSU. MWD-AS005,PSU Pressure Screw (Milestone) MWD-AS006,Control Pressure Screw(Milestone) MWD-AS007,PEEK Protection Shields (Milestone) ,PN-34048 MWD-AS008,PEEK Pressure Protection Shields (Milestone) MWD-AS012,Segmented Rotor (Milestone) MWD-AS013,Centering plate (Milestone) MWD-AS020,PEEK Sealing Screw,( Milestone ETHOS 10 ),PN-055139 MWD-AS021,PEEK Adapter Disc Plate,( Milestone ETHOS 10 ),PN-050183 MWD-AS022,PEEK Cup Spring Plate,( Milestone ETHOS 10 ),PN-050184 MWD-AS023,TFM Protection Ring,( Milestone ETHOS 10 ),PN-34056 MWD-AS024,Vessel Cap TFM Body,( Milestone ETHOS 10 ),PN-055136 MWD-AS025,TFM Insulating Plate,( Milestone ETHOS 10 ),PN-35119 MWD-AS026,PTFE Centering plate,( Milestone ETHOS 10 ),PN-LCR0013 A fully assembled milestone microwave digestion vessel sets included : TFM vessel,TFM vessel cover,PEEK vessel outer shield,PEEK adapter plate,PEEK spring,indicator ring. Each Milestone microwave sample preparation vessel assembly is a system of components consist of : 1.A vessel that contains the sample. 2.A vessel cover that seals the vessel and acts as a over pressure release valve. 3.A safety shield that surrounds the vessel and provides structure and safety for operation at elevated pressure. 4.A pressure adapter plate,that fits on top of vessel cover. 5.A spring rated to the pressure performance specifications of the particular vessel/rotor combination. 6.A vent indicator ring, Function of the vessels: Each closed,microwave sample preparation vessel is actually a system of components,can provide the following functions: 1.A closed,clean environment for containing the sample during processing,thereby preventing contamination; 2.A closed container that prevents loss of volatile species,even when processing materials at temperatures well above the normal boiling point of the mixture, 3.A closed container that minimizes the use of expensive acids or solvents, 4.A system that can safety release (vent) over-pressures in the vessel,then reseal the vessel and continue the microwave process to completion. Related other type of sample digestion systems accessories, like as protection shield,TFM vessel,TFM cover,adapter plate,special spring...and so on,please contact us.