HZDT Sealing; Braided Packing

GH-120 Braided PTFE/Graphite Packing (NA)

Construction: Interlock braid, using PTFE/graphite yarn and a high temperature break-in lubricant yarn is formed from expanded PTFE in which fine particles of pure graphite have been encapsulated. The resulting packing combines the chemical resistance of PTFE with the heat dissipation characteristics of graphite, thus allowing much higher shaft speeds than conventional PTFE packings.

Application: It is chemically inert over the entire 0-14 pH range with these exceptions: molten alkali metals, flourides, aleum, fuming nitric acid, aqua regia, and other strong oxidizing agents. GH-120 is an excellent general service and corrosive service packing. It is commonly used in pumps, valves, rotating and reciprocating shafts, mixers and agitators, and is especially designed for services involving surface speeds and temperatures higher than those that can be handled by pure PTFE packing.

Service Limits:


Pressure (Bar)	50	200	300
Temperature (°C)	-200~280
Shaft Speed (m/s)	0~20
PH Range	0~14

GH-130 Braided Pure PTFE Packing Lubricated (NA)

Construction: It is a interlock braided packing manufactured from pure PTFE yarns pretreated with PTFE dispersion, plus a break-in lubricant to reduce the coefficient of friction.

Application: This is a dimensionally stable packing, yet relatively soft and pliable, which has excellent lubricating and running characteristics. It handles all acids, alkalis, and most chemicals, with the exception of molten alkali metals. It is suited for high speed rotary shaft service and is also commonly used on reciprocating pumps, mixers, agitators, and reactors.

Service Limits:


Pressure (Bar)	30	150	200
Temperature (°C)	-200~260
Shaft Speed (m/s)	0~18
PH Range	0~14

GH-240 Braided Pure PTFE Packing Dry (NA)

Construction: It is a firm, high density interlock braided packing manufactured from pure PTFE filaments pretreated with PTFE dispersion, but contains no other lubricants. The PTFE dispersion provides a low friction surface finish and prevents leakage through the braid.

Application: It is similar to GH-130, but is especially suited for oxygen service and other services where lubricants other than PTFE can not be tolerated. GH-240 is commonly used in valves and lower shaft speed applications. It is resistant to most chemicals, aggressive fluids, gases and solvents, with the exception of molten alkali metals.

Service Limits:


Pressure (Bar)	30	150	200
Temperature (°C)	-200~260
Shaft Speed (m/s)	0~18
PH Range	0~14

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