Braided graphite packing GRA 9000 HT

PTFEaramid fiber

The braided packings are used in the industries in order to isolate hermetically shafts, rods and housing from the blow-by of fluids and gas of contact and transit. The main uses are: • Rotary shaft seals: centrifugal pumps, agitators, blendors. • Motion shaft seals: piston pumps. • Rods seals: valves. • Static seals: covers, closings, oven doors. According to the final uses, it is essential to do an appropriate selection of the braided packing. The basic characteristics of all braided packing are: • Plasticity: To adapt to the walls and to the rod with a gradual compensatory action. • Perfect seal: To create a barrier to the passage of fluids and gas. • Resistance to wear: to prevent the volume loss in order to avoid continuous controls; • Low coefficient of friction: So as not to cause overheating. The packings are intended to operate in diverse areas and therefore in their construction it has been necessary to work with a diverse range of materials Graphite fibres: suitable for applications where it is necessary a very good chemical resistance. Vegetable fibres: COTTON - FLAX - HEMP - RAMIÉ: these are particularly recommended for use where the main requirements are strong resistance to wear Synthetic fibres: P.T.F.E. - ARAMID - PHENOLIC - PAN - POLYESTER - ACRYLIC: are used in order to obtain braided packings with a very good resistance to chemical and corrosive agents. Insulating fibres: glass or ceramic fibers are normally used for termoresistant static seals. Diagonal braiding: This new braiding system has proven to be superior to all the others previously developed, as it offers the following advantages: • LONGER LIFE • GREAT FLEXIBILITY