PTFE compounds for demanding sealing applications and ram extrusion

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  • PTFE compounds incorporating spheric fillers
  • Material reduces leakage and features improved wear resistance
  • Grade for ram extrusion

The company Dyneon has introduced a new range of PTFE compounds incorporating 3M spheric fillers. The new compounds are intended for challenging sealing applications, such as radial shaft and piston seals.

PTFE ram extrusion sample

3M Dyneon Compound NST 1111R has been developed for the production of radial shaft and piston seals and provides significant advantages for many mechanical and plant engineering applications (source: 3M)

Material reduces leakage and features improved wear resistance

3M Dyneon Compound NST (New Sealing Technology) 1111R, made from a combination of Dyneon PTFE and 3M fillers, was developed for the production of radial shaft and piston seals. The compound reduces leakage, supports a higher production yield and optimised seal thickness. In addition, it shows improved wear resistance.

PTFE grade for ram extrusion

If economic efficiency is an essential requirement in the processing of PTFE compounds then there is no alternative to ram extrusion. This continuous pressure sintering process produces ‘endless’ semi-finished products such as tubes, rods or other profiles, which are often extruded directly to the final size generating additional savings during machining or in reducing waste. For this reason, Dyneon has developed a dedicated grade for the ram extrusion process named 3M Dyneon Compound NST-R 1111R. The low wall friction in the extrusion die caused by the filler and supported by the harder agglomerate grain, enables the production of hollow profiles with a wall thickness as small as two millimetres. Rod or piston seals can thus be produced without re-machining the inside or outside diameter. In addition, the cycle time for the assembly process can be effectively shortened.

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