Datasheet

© Freudenberg Simrit GmbH & Co. KG | Technical Manual 2007592
Products I ISC O-Rings and Static Seals
Merkel Grafiflex
®
-Cover Seal
Product description
Merkel Grafiflex cover seals are supplied as pre-
pressed rings and are proven in self-sealing covers,
e.g. in large valves and in high-pressure water pre-
heaters.
Product advantages
Merkel Grafiflex stays elastic even with continually
varying temperature and pressure up to 200 N/mm
2
surface pressure. It correctly bridges gap widths on
large, self-sealing covers up 0,3 mm. Larger gaps are
controlled by Merkel Grafiflex using springs made
of material 1.4571 integrated into the corners of the
packing rings by pressing.
Application
Valves.
Operating conditions
Operating pressure Temperature pH value
1000 bar
–200 … +550 °C
1)
0 … 14–200 … +700 °C
2)
–200 … +2500 °C
3)
1)
the majority of media and air
2)
steam
3)
inert gas