Guarnizione intrecciata

The Grafopak packing is made of expanded graphite on high level of

purity 99% with the special active inhibitor system. The inhibitor

protect all metal equipment against a galvanic corrosion risk.

Extremely high chemical resistance and good thermal conductance - on

level most of metals. Moreover it has excellent self-lubricating

properties, also in dry conditions (without media leak) and after dried

other added lubricants. Completely resistant on heatstrokes and risk of

overheating the seal in stuffing box.

The dynamic seals in glands of centrifugal pumps for water, chemicals

and petrochemicals, especially for hight speed shaft pumps with an

exception of strong oxidants and abrasion liquids. However, the pure

graphite, as half-hard and breakable material needs special tools for

montage and high skills also needs good condition of the stuffing box.