Knotted sealers are the most often used sealers for chokes and industrial armatures. Easy assembly, universal usage and durability are the advantages of this type of sealer. They are used as both static and movable sealers, for machines, furnaces, rotary and piston pumps, rotating devices, valves for containers, cisterns, pivots for armatures, mixers and others. The sealers are excellent for high specification installations.
High quality yarns made from natural fibers (mainly cotton), synthetic (pyramid, polyscrylonitryl), pure PTFE (teflon) and modified (fiber, filled in with graphite, impregnated with silicon oil) and high quality ceramic, coal and graphite fibers are all used in the production of knotted sealers.