James Walker Gland packing / fat cord Graphite Aramid for Heavy Abrasive Chemicals Lionpak 2503

Pure dry PTFE packing with low friction capabilities
Lionpak 2503 is a combination packing, with tough but smooth aramid fibre yarn at the corners, ePTFE / graphite solid yarn with a break-in lubricant at the faces, and a solid core of elastomeric cord. The aramid yarn is impregnated with an antifriction fluoropolymer dispersion and a special lubricant break-in.

This product is extremely durable, with inherent dimensional stability that offers high integrity sealing throughout its long operational life.

Lionpak 2503 is designed for use in valves as well as in pump applications including centrifugal pumps, rotary equipment, reciprocating pumps and rams

For details of our full range of compression packings, download our compression packing guide document.

Prime features

• Exceedingly durable packing, with inherent dimensional stability, that offers high integrity sealing throughout its long operational life.
• PTFE/graphite running faces provide excellent heat dissipation with cool running.
• Aramid yarn at its corners helps to withstand the rigours of reciprocating plunger pump operation.
• The high density elastomeric core provides resilience and resistance to high working pressures, and can absorb the vibration and eccentric movement created by worn running surfaces.

Typical applications
Pumps, valves, reactors, autoclaves, mixers, agitators, refiners, pistons, hydraulic presses and hammers. It can also be used as a replacement for traditional lip seals in certain applications.
Recommended for duties with ammonia and carbamate solutions. Also suitable for use with oxidising and non-oxidising liquids and gases, fine chemical slurries, hydrazine, trisodium phosphate, sodium hexametaphosphate, black and green liquor, paper pulp, pulp diluted with, water, water slurries, acids, alkalis and molasses.

Chemical properties
Compatible with media in the range pH 1-13.

Performance

• Maximum temperature: +250°C (+482°F)
• Minimum temperature: -50°C (-58°F)
• Maximum system pressure valves: 25 MPa/250 bar (3626 psi)
• Maximum system pressure centrifugal pumps and rotary equipment: 2 MPa/25 bar (363 psi)
• Maximum shaft speed centrifugal pumps and rotary equipment: 20 m/s (3937 fpm)
• Maximum system pressure reciprocating pumps and rams: 10 MPa/100 bar (1450 psi)
• Maximum rot speed reciprocating pumps and rams: 2.0 m/s (394 fpm)

How supplied
All popular square sections from 3 mm to 50 mm (1/8″ to 2″) in boxes containing 8 m (26’ 3”), in coil form or on spools as detailed in the data sheet below.
Also supplied as split preformed rings and sets.