Polytetrafluoroethylene Packing

PTFE Packing is a sealing material made from pure polytetrafluoroethylene fibers through a weaving process, containing no additives or lubricating grease. It is mainly used in industries with high cleanliness requirements such as chemical, food and pharmaceutical industries, and is suitable for dynamic sealing scenarios of pumps, valves and other equipment.

This material features corrosion resistance, self-lubrication and anti-adhesion properties. It can operate stably within a temperature range of -50°C to +260°C and is resistant to most chemical media except molten alkali metals and free fluoride ions. It is divided into six categories according to different processes:

Aramid blended black PTFE packing is suitable for high-pressure dynamic sealing;

White PTFE packing is specially designed for pollution-free environments;

Oil-impregnated type improves thermal conductivity by adding graphite;

Oil-free type enhances structural stability with graphite particles;

Filament-split type strengthens compression resistance through an impregnation process;

Oil-impregnated white PTFE packing is treated with silicone oil to adapt to highly corrosive environments.

PTFE packing can be classified into aramid blended black PTFE packing, white PTFE packing, aramid corner-wrapped black PTFE packing, oil-impregnated black PTFE packing, oil-free black PTFE packing, filament-split PTFE packing, and oil-impregnated white PTFE packing.

Aramid Blended Black PTFE Packing

It is made from aramid fibers and black PTFE by a special mixed weaving process. High-strength aramid material interwoven in the packing makes the product more wear-resistant. Combining the excellent properties of aramid fibers and black PTFE fibers, it features enhanced wear resistance and is suitable for dynamic sealing with high linear speed and high medium pressure.

It can be applied in industries such as chemical, agrochemical, petrochemical, pharmaceutical, sugar, paper making and electric power, for equipment including reciprocating pumps, mixers, agitators, reactors and valves.

Applicable media: water, wastewater, oil, grease, weak acid and weak alkali solutions, acid and alkali solutions, and abrasive media.

White PTFE Packing

It is woven from pure polytetrafluoroethylene fibers.

It can be used in pollution-free applications in chemical, food, pharmaceutical, paper making, chemical fiber, fine chemical and other industries.

It is compatible with all chemical media except soluble alkali metals and free fluoride ions.

Oil-Impregnated Black PTFE Packing

It is woven from PTFE yarns containing graphite and anti-corrosion lubricants.

It features high tearing strength, high thermal conductivity, and a low friction coefficient, ensuring stable performance and long service life.

It can be used for shaft seals in food, pharmaceutical, paper making, chemical fiber, fine chemical and other industries, as well as for agitators, mixers, autoclaves, centrifugal pumps and other equipment sealing water, steam, solvents and other media.

Applicable to most media except strong oxidizing media.

Oil-Free Black PTFE Packing

It is woven from polytetrafluoroethylene yarns containing graphite particles.