What is Pump Packing?

Flax (1460)

Used for packing brine, cold water, and cold oils. This yarn is mostly used in the shipping industry. Flax can withstand 1885 FPM, a pH of 5-9, and 220ºF (104ºC).

Acrylic (1173)

Used for packing mild acids, alkalies, brines, and oils. This yarn is used as a form of low-cost packing in many industries. Acrylic yarn can withstand 1885 FPM, a pH of 4-10, and a temperature up to 450ºF (232ºC).

Kynol (1177)

Used primarily in chemical, pulp, and paper industries. Kynol yarn can withstand 1800 FPM, a pH of 1-13, and temperatures up to 500ºF (260ºC)

Nomex

Used for caustics, mild acids, chemicals, air, oil, gases, and solvents. Nomex yarn is mostly used in the fire protection industry. This material can withstand 1800 FPM, a pH of 3-11, and temperatures up to 500ºF (260ºC).

Filament PTFE (1169)

Being PTFE, this yarn has a high resistance to many chemicals, acids, and corrosion. PTFE yarn does not have great thermal conductivity unless paired with graphite lubricants. This fiber can withstand 1200-4900 FPM depending on the use of graphite lubricants. PTFE can withstand a pH of 0-14 and temperatures up to 500ºF (260ºC).

Encapsulated PTFE (1180)

Used mostly in mixers, pumps, agitators, reactors, and blenders. Encapsulated PTFE yarns are expanded with graphite which creates a stronger microstructure. This yarn can withstand 3300-4400 FPM, depending on the lubricant, a pH of 0-14, and temperatures up to 550ºF (288ºC).

Carbon / Graphite (1176)

This type of yarn is manufactured through a heat treatment process until it achieves the desired carbon or graphite content. These materials can withstand 4000 FPM, have a pH of 0-14, and have 650ºF (343ºC).

Flexible Graphite (1171)

This yarn has excellent thermal properties and can be mixed with other fibers to form a mixed yarn. It alone can withstand shaft speeds of less than 4000 FPM, a pH of 0-14, and 850ºF (454ºC).