Gland Packing VALFLON based

no image
Product name
PTFE Mixed Graphite packing

Coil packing made of PTFE fiber yarns integrated with graphite and lubricating oil and of aramid fiber yarns, processed with PTFE and lubricating oil so as to form the corner section made of aramid fiber, then braided tight into a square cross section.
This is a high performance hybrid packing that is featured with the strength of aramid fiber and with the lubrication property of graphite-integrated PTFE fiber yarn.
Having characteristics similar to those of No.7202, but these No.7203 are best suited for shaft seals in use for rotating machines and reciprocating machines subject to still higher pressure and load.
Products with a dimension 6.5 mm or larger are available.


Application ◎:1st recommended products ○:2nd recommended products

Valve Available ranges
Temperature limit(℃) 260
Pressure limit(MPa) 10.3
pH 0~14
Rating: ANSI Class 600
Rotary Pump Available ranges
Temperature limit(℃) 260
Pressure limit(MPa) 2.0
Speed limit(m/s) 20
Permissible PV value (MPa・m/s) 14.7
pH 0~14
Attack to shaft Good
Reciprocating motion machine Available ranges
Temperature limit(℃) 260
Pressure limit(MPa) 9.8
Speed limit(m/s) 5
pH 0~14
Attack to shaft Good
Plunger pump
Soot blower
Rotating motion machine Recommended Application
Temperature limit(℃) 260
Pressure limit(MPa) 9.8
Speed limit(m/s) 5
pH 0~14
Attack to shaft Good
Screw feeder
Gear pump

Applicable fluids ◎:1st recommended products ○:2nd recommended products

Water based fluid

Clean water, seawater
Heated water
Superheated steam,Saturated steam
Clean water, refreshing beverage
sewage water
muddy water
Slurry liquid
Heated water, boiler feed water, low pressure steam

Oil based fluid

Animal & vegetable oil, Mineral oil
Heat transfer oil (except HTS)
Heat transfer oil
Crude oil
Heavy fuel oil


Alcohol based solvent
Aromatic hydrocarbon
Ketones & ethers

Corrosive fluid

Weak acid & alkali
Strong acid (except oxidizing acid)
Oxidizing acid & oxidizing agent
Strong alkali
Pulp liquid

Gas based fluid

Nonflammable gas & inflammable gas
Gas susceptible to burn
Liquefied gas

Fine particle etc.

Fine particle
Slurry liquid

Gas in general

Air, gas
Solvent vapor, etc.


Refrigerants (chlorofluorocarbons)
low temperature liquefied fluid

Inappropriate fluid:

This selection table lists up products recommended by us for various conditions, and does not necessarily mean that non-marked items can not be used. It should also be noted in advance that, depending on the service conditions, abrasion powder may be mixed into the working fluid.


Q. What should I use to cut the gland packing?

A. The gland packing can be cut with a sharp blade such as a standard cutter knife or kitchen knife of medium size or larger. Also, a guillotine packing cutter, which is a dedicated cutting tool that combines a scale and a cutting machine, is sold by Garlock, our partnering company in the U.S.

Q. Which is better for cutting the gland packing, bias cut or straight cut?

A. When looked at in one-ring units, both bias cut and straight cut have their advantages and disadvantages, such as the bias cut being less prone to leakage due to a long cut surface and the butt portion of the cut surface being less prone to shifting in the straight cut, but basically because this is a product that is used with multiple overlapping layers, there will be no difference in terms of using either cutting method.

Q. Why is the gland packing for pump used with leaking liquid?

A. Unlike a mechanical seal or lip packing, lubrication and coolability of the contact surface are secured by using it with leaking liquid. Using it without leaking liquid may result in the seizing, damage or short life of the packing. In addition, the amount of leaking liquid varies depending on the operating status of the pump and the performance of the gland packing that is used.