Fan Sefeng

Spring Seal/ spring energized seal/ Variseal is a U-shaped Teflon high-performance seal with a special spring inside. By the appropriate spring force plus the system fluid pressure, the sealing lip (surface) is pushed out. Gently press down on the metal surface being sealed to create a very good seal. The actuation effect of the spring can overcome the slight eccentricity of the metal mating surface and the wear of the sealing lip, while maintaining the expected sealing performance.

Teflon (PTFE) is a sealing material with better chemical resistance and good heat resistance than perfluoroelastomer. It can be used in most chemical fluids, solvents, hydraulic oils and lubricating oils. Therefore, the sealing performance can be exerted for a long time. Various special springs are used to overcome the elasticity problem of Teflon or other high-performance rubber and plastics, and most of the seals that can be used in static or dynamic (reciprocating or rotating motion) can be replaced. The operating temperature range can be from refrigerant to 300℃, and the pressure can be from vacuum to ultra-high pressure of 700kg. The moving speed can be as high as 20m/s. The spring can be selected from stainless steel, Elgiloy Hastelloy, etc. according to different use environments, so it can be used in various high-temperature corrosive fluids. occasion.

Pan plug seals can be made according to AS 568A standard O-ring grooves (such as radial shaft seals, piston seals, axial face seals, etc.), and completely replace the general O-ring. Because there is no swelling problem, it can be used for a long time. Maintain good sealing performance. For example, for mechanical shaft seals used in high-temperature corrosive environments in petrochemical processes, the most common cause of leakage is not only the uneven wear of the sliding ring, but also the deterioration and damage of the O-ring. The use of HiPerSeal can completely improve rubber softening, swelling, surface Roughening, wear and other problems, thus greatly improving the service life of the mechanical shaft seal.
In addition to the above-mentioned sealing applications in high temperature and corrosive environments, it has low friction coefficient of sealing lip, stable sealing contact pressure, high pressure resistance, and large radial run-out. And the groove size error, it is very suitable for the seal of the air hydraulic cylinder, replacing the U-shaped or V-shaped tightening to obtain excellent sealing performance and service life.

Features:
The sealing performance is not affected by the lack of lubrication at startup, effectively reducing wear and frictional resistance. Through the combination of different sealing materials and springs, different sealing forces can be displayed to meet various application needs. Made by special CNC machining machine, no mold cost －Especially suitable for a small number of seals, the chemical corrosion resistance and heat resistance are far superior to the commonly used seal rubbers, the dimensions are stable, and there is no problem of deterioration of the sealing performance caused by volume expansion or shrinkage. Ring groove, greatly improve sealing ability and service life
The groove of the seal can be filled with any anti-pollution material (such as silicone) - but not suitable for radiation environments, because the sealing material is Teflon, very clean and will not pollute the process Very low coefficient of friction, even in very low speed applications Very smooth, no "slip effect"
Low starting friction resistance, even if the shutdown time is long or intermittent operation, it can maintain low starting force performance. The PTFE leaf spring combined U-shaped sealing ring (pan plug seal) is combined with the appropriate spring tension and the system fluid pressure to seal the top of the sealing lip out and lightly press the sealed metal surface to form a very good sealing effect. Working limit, pressure: 700kg/cm2 Temperature: -200--300℃ Linear speed: 20m/s Use medium: oil, water, steam, air, solvent, medicine, food, acid and alkali, chemical solution
application:
The pan-plug seal is a special seal developed for the application environment of high temperature corrosion, difficult lubrication and low friction. Different Teflon composite materials, advanced
The combination of engineering plastics and corrosion-resistant metal springs can fully meet the increasingly stringent and diverse needs of the industry. Typical applications are as follows:
1. Axial seals for rotary joints of loading and unloading arms
2. Paint valve parts or seals for other paint systems
3. Seals for vacuum pump
4. Beverage, water, beer filling equipment (such as filling valve) and seals for food industry
5. Seals for automotive and aerospace industries, such as power steering machines
6. Seals for metering equipment (low friction, long life)
7. Seals for other process equipment or pressure vessels