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Lionpak® 2502

PTFE / graphite / aramid packing for abrasion resistance and cool running for pumps and valves.

  • Pumps
  • Valves

Lionpak 2502 is a specialised product which is a combination packing, with tough but smooth aramid fibre yarns at the corners, ePTFE / graphite fibre yarn at the faces, and a core of high density extruded and expanded PTFE cord.

This product is also available with an aramid core for higher pressure duties such as reciprocating pumps, please contact us for further details.

  • PTFE/graphite faces offer excellent heat dissipation for cool running
  • Aramid fibre corners withstand the rigours of plunger pump applications
  • Aramid yarn is impregnated with fluoropolymer dispersion to enhance sealability, and a break-in lubricant to reduce friction
  • PTFE core provides resistance to high working pressure

  • With its dense construction and excellent sealability, this packing is used for chemical processing duties with pumps, valves, reactors, autoclaves, agitators and mixers.
  • It is suitable for use with ammonia and carbamate solutions, hydrazine, trisodium phosphate, sodium hexametaphosphate, black and green liquor, chemical slurries, paper pulp, contaminated water and molasses.

Valve Stem Duties

  • Maximum operating temperature: +250°C (+482°F)
  • Minimum operating temperature: -50°C (-58°F)
  • Maximum system pressure: 25 MPa/250 bar (3626 psi)

Centrifugal Pumps and Rotary Equipment

  • Maximum operating temperature: +250°C (+482°F)
  • Minimum operating temperature: -50°C (-58°F)
  • Maximum system pressure: 2 MPa/20 bar (290 psi)
  • Maximum shaft speed: 20 m/s (3937 fpm)

Reciprocating Pumps and Rams

  • Maximum operating temperature: +250°C (+482°F)
  • Minimum operating temperature: -50°C (-58°F)
  • Maximum system pressure: 20 MPa/200 bar (2900 psi)
  • Maximum rod speed: 2 m/s (394 fpm)

Compatible with media in the range of pH 1-13.

  • All popular square sections from 6.5 mm (1/4") to 50 mm (2") in boxes containing 8 m (26' 3") in coil form or on spools as detailed in the product datasheet
  • Also supplied as split preformed rings and sets
  • Please refer to the product datasheet for spool ordering information
Related Downloads

Compression packing fitting guide

English pdf (502 KB) Download

Lionpak 2502 datasheet

English pdf (624 KB) Download

Compression packing guide

Our constant advances in materials and lubricants, product design and manufacturing techniques, keep us at the forefront of compression packing technology. We therefore bring you one of the widest ranges of packings to match the temperatures, pressures and speeds of your most modern fluid handling systems, and economical packings for your older plant.

Find out more
Compression packing guide

Expert to Expert

Want to discuss your project, engineering or materials challenge expert to expert? Simply provide us with your contact details and a little information about the application you are working on, and one of our experts will contact you as soon as possible.

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