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In industry for fluid sealing, variety of packing’s are used .PTFE packings& Graphite packings are of those widely-used packing across the industries with braided form. Lets try  to understand PTFE packings and Graphite packings on the basis of followings characteristic :

Composition :

Graphite is a black in coloured& inorganic form of pure carbon  which can be mixed with PTFE yarn to give excellent  properties.

PTFE ( polytetrafluoroethylene) is  white coloured polymer  made through polymerization of tetrafluroethylene. Lubricated PTFE yarn will enhanced the properties of packing.

Properties :

Graphite yarn braided to from Graphite packing which is having Low coefficient friction. PTFE packing is having low coefficient of Friction, Good chemical resistance & suitable for strong acids, alkalis aggressive chemicals.

Applications:

Graphite packing :- Suitable for use as a general valve and pump packing within many industries including chemical plant and chemical processing, gas plant, petrochemical plant, power plants, refineries.Expanded Graphite packing  are used in steam application   for valves,pumps.

PTFE packing :  PTFE packing is suitable forcorrosiveapplication, strong acid, Aggressive chemicals. PTFE packing widely used in  chemical, petro chemical,Pharma industries,Food & beverages& many other industries. PTFE can used  for packing for  equipment like valve, pumps,mixers,Agitators.

Benefits – 

Non-asbestos grand packing are perfect alternatives to asbestos packing as they are having self-lubrication properties  which are good conductor of heat & allow heat dissipation through shaft & sleeve. 4)Non asbestos gland packing’s are cost effective, durable and require low maintenance.

PTFE Gland packing design as per FDA requirement.