1. Overview of high temperature resistant imported composite gaskets for fluorine rubber
Fluorine rubber heat resistant imported composite gasket is made of rubber ring and metal ring, which is a sealing ring used to seal thread and flange connection. The ring includes a metal ring and a rubber gasket. Threaded pipe joints and plug seals are generally used together with jacketed pipe joints to plug oil outlets. They are mainly used for static sealing at the end of the threaded joints of hydraulic valve pipe joints. They are suitable for static sealing at the end of the threaded joints of British, American and French and German standard metric threads. Composite gaskets can be divided into A type and B type according to their structural forms, and full package and half package according to the difference of encapsulation.
Composite gaskets are widely used in oil-based pipeline systems for welding, jamming, expanding pipe joints, bolts and mechanical devices of pressure system end static seal.
Two. Common materials and properties of fluorine rubber high temperature resistant imported combined gaskets.
Fluororubber O ring (FPM/FKM): Six boiling polypropane vinylidene fluoride copolymer. At present, the widely used six fluorinated fluorine rubber has been listed by DuPont Co in the name of "Viton". High temperature resistance is superior to silicone rubber, with excellent chemical resistance, resistance to most oils and most solvents (except ketones and esters), weatherability and ozone resistance; cold resistance is relatively poor. Fluoroelastomer O-rings are generally used in the temperature range of - 40 ~ 240 C, general hardness is 75 degrees, the color is mainly brown, and green and black are also compared. It is more common.  
Fluorine rubber imported composite gasket has the advantages of high temperature resistance, acid and alkali resistance, oil resistance, radiation resistance, high vacuum resistance, electrical insulation, mechanical properties, chemical corrosion resistance, ozone resistance and atmospheric aging resistance. Disadvantages are poor workability, high price, poor cold resistance, low elasticity and low permeability. Fluorine rubber O-rings are mainly used for vacuum, high temperature and chemical corrosion resistant sealing materials, rubber hoses or other parts and automobile industry in national defense industry.