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Expanded PTFE sealing tape parameters and use
Jul 15, 2019

Expanded PTFE Joint Sealant is a very novel and unique sealing material made by a unique processing technology. It is a continuous strip of white pure PTFE product with good flexibility, compression resilience, creep resistance, high and low temperature resistance and excellent corrosion resistance, non-aging, self-lubricating . Excellent sealing performance, extremely convenient installation and use, it is an ideal sealing material for chemical, pharmaceutical, petrochemical, food and beverage, electronics, electric power, metallurgy, shipbuilding and other industries.


Technical Parameters:

Use temperature -268~+316°C

Use pressure <20 MPa ·Applicable medium All chemical substances except elemental fluorine and molten alkali metal.

Density 0.6~0.8 g/cm3 Use of sealing tape · Sealing of flange faces of various enamel linings, glass linings, plastic linings, rubber linings, graphite linings, stainless steel, titanium steel towers, heat exchangers, reactors, etc.

Flange face seals for various pipe and pipe fittings.

The surface processing accuracy is poor, the uneven area is large, the shape is irregular, and the bolt fastening force is not easy to seal with the flange surface of the large diameter equipment which is not enough or not too large.

Strongly corrode the medium and seal the fluid that cannot be contaminated.


The superiority of the expanded polytetrafluoroethylene sealing tape:

Excellent sealing performance: The sealing tape has a high degree of compressibility, and it is easy to fill the voids and grooves on the sealing surface, block the interface leakage, and have the property of rebound expansion when subjected to tension. Therefore, the higher the internal medium pressure, the greater the sealing force. This is the most amazing feature of the sealing tape.


Easy to use: Cut a length of expanded polytetrafluoroethylene sealing tape, as long as the ends of the two ends are crossed to form a sealing ring of any size and shape. The adhesive tape attached to one side of the sealing tape enables the sealing tape to be fixed on the sealing surface of the device for easy installation, and then a small bolting force (minimum preload force of 50Kgf / cm2) can be formed very well. Sealed.


Durable: Teflon has the best corrosion resistance, non-aging properties, specially processed sealing tape, and is endowed with good creep resistance and long-term safe use over a wide temperature range.


Clean and clean: The expanded polytetrafluoroethylene sealing tape is a white PTFE product, because it will not be corroded and will not age, so it will not contaminate the contacted fluid due to falling off.


Good fortune: A wide range of fixed sealing gaskets need to be manually cut or punched. It costs a lot of money and costs, and the cost is naturally high. As long as the two ends of the sealing tape are crossed, a sealing ring of a certain specification can be formed. Waste; few kinds of sealing tapes can meet daily needs, eliminating the expensive cost of stocking various specifications of sealing gaskets; expanded PTFE sealing tape can fully fill irregular sealing surfaces, can be reduced The precision of the sealing surface is processed, and some parts and equipment that are rusted, washed and worn by the sealing surface are brought back to life; in addition, because of its long service life and the number of repairs, it is more economical.


Usage: Clean and dry the sealing surface, select a certain width of expanded polytetrafluoroethylene sealing tape, tear off the adhesive tape to protect the paper, and press the sealing tape against the outer edge of the sealing surface. Cross-over, more than 2cm outside the intersection (Note: on the flat flange, the ends must be crossed and overlapped. Use on the groove flange, can be stacked in parallel, stacked more than 2cm.) The corresponding sealing surface is evenly fastened, and the joints at both ends are also pressed to the same thickness as other parts, and the intersection will never leak.





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