Pacseal® NA 666 is composed of alternate layers of graphite foil and metal which allows the seal to remain flexible and at the same time, resistant to erosion and wear thereby, ensuring longer life of butterfly valves which are used for regulating the flow
The elements of the laminated plate can be offered with various metals, like SS304, SS316, Hastelloy, C276, S31803, Monel 400, UNS32750, S32760, and S32750 depending on the media
The sealing is flexible and resistant to corrosion and wear in high temperature conditions and guarantees longer lifespan of the entire valve. Its high elastic recovery provides effective sealing, optimum reliability and reduced maintenance
The laminated seal provides complete bubble-tight shut-off in gas applications, even under corrosive and high temperature conditions. Each individual layer performs an independent sealing and is unaffected by the damages to other layers
The geometry and structure of the seal is defined by the valve manufacturer but commonly used construction has been shown above
