Products > Packings for pumps and valves > PTFE packing with graphite filling intertwined with aramid type EPA/Z

PTFE packing with graphite filling intertwined with aramid type EPA/Z

This packing uses excellent properties of the premium PTFE yarn supplementing it with generally known mechanical strength of aramid. A special strand enables to strengthen the packing with aramid, evenly throughout the section. Thanks to even intertwining of aramid and PTFE strands we obtain packing well aligning in the chamber with simultaneous low friction rate and high mechanical strength.

Application

The packing is used in rotational pumps and other devices operating in the environment of water, hot water, solutions of salt, most acids and alkali, fuels, oils and solvents and suspensions of solid particles in these utilities. Main recipients are: chemical, artificial fertilizers and food industry.

DESCRIPTION OF PARAMETER

VALUE

TYPE

EPA/Z

Material

PTFE yarn with graphite filling
+ aramid yarn + silicone oil

Maximum operation temperature in °C

280

Minimum use temperature in °C

-100

Type of reinforcement

-

Density in g/cm3

1,70 ± 15 %

Scope of pH

2 – 12

Reciprocating pumps

p=200 bar

v=5 m/s

Centrifugal pumps

p=30 bar

v=25 m/s

Fittings

p=300 bar

v=2 m/s

Colour

yellow – black

Dimensional range in mm

6 – 25

EPA/Z+R – with elastomer core

6-16 mm – roll at least 2 kg
17-30 mm – roll at least 5 kg



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PTFE packing with graphite filling intertwined with aramid type EPA/Z