The Rotary PTFE Spring Energized Seal is composed of a U-shaped sealing jacket and a V-shaped corrosion-resistant metal spring. Its sealing outer ring has a flange on the back, and the flange is fastened in the groove to prevent the seal from rotating, so that the short and thick dynamic sealing lip can exert low friction, long life, and even in high viscosity It can play a good oil scraping effect in the medium. When it is at low pressure or zero pressure, the metal spring provides the main sealing force, and as the system pressure rises, the main sealing force is provided by the system pressure, thus ensuring a tight seal from zero to high pressure. Its sealing jacket and spring can be matched with a variety of suitable materials, which allows a wider range of uses beyond the hydraulic field, such as in the chemical, pharmaceutical and food industries.The technical data are as follows: Working pressure: 15MPA (dynamic load), 25MPA (static load) Working speed: 2M/S Working temperature: --100 degrees ----+260 degrees Working medium: almost all fluids, chemicals and gases.Material hardness and surface roughness of mating surfaces The rotary motion seal has special requirements on the mating surface. We recommend that the hardness be at least 55HRC, the quenching depth should be at least 0.3mm, and the unquenched mating surface should have a Brinell hardness of at least 170HB. The roughness of the shaft surface is Ra=0.1-0.2um, and the roughness of the static groove surface is Ra=0.3-0.5um.​

Spring energy storage seals can be used in a variety of applications, such asdynamic and static or i...

Comparison of PTFE Spring Energized Seals Between Oring and U-ring1. Components O-ringCommonly used rubber are nitrile rubber, fluorine rubber, silicone rubber and ethylene propylene rubber, etc. U-ringIt is generally polyurethane, and a few are harder rubber PTFE Spring Energized SealsThe body of the seal is generally filled PTFE, the matrix is PTFE, the filler is carbon fiber, copper powder, molybdenum disulfide, etc., and the spring is usually composed of various corrosion-resistant stainless steels and alloy spring.2. Storage life O-ringNitrile rubber, etc. are generally 2-10 years, fluorine rubber, silicone rubber 5-20 years U-ringUsually 5-10 years PTFE Spring Energized SealsTheoretically unlimited3. Working medium compatibility O-ring sealThe medium of O-ring seals is greatly depending on the material. There is no one that can hold all of them. For example, nitrile rubber is resistant to non-polar mineral oil, but it is poor for polar mineral oil, water, acid and alkali, etc. U-ringResistant to mineral oil resistant hydraulic oil, not resistant to water and water liquids. PTFE Spring Energized SealsPTFE is resistant to almost all media, including strong acid and alkali, organic solvents, various oils, inorganic salts and organic salt solutions.Stainless steel 304, 316, 718, etc. have strong corrosion resistance, and can be used in a variety of working media, such as various types of grease, water, etc.4. Friction and wear O-ringThe dry friction coefficient between rubber and steel is about 0.6-0.8, and the friction coefficient is between 0.3-0.5 when lubricated. U-ringGenerally, the friction coefficient is slightly smaller than rubber under the same working conditions. The dry friction coefficient is between 0.3 and 0.5. When there is lubrication, the friction coefficient is between 0.2 and 0.4. PTFE Spring Energized SealsThe dry friction between the filled PTFE and the metal material is about 0.15. When there is lubrication, the friction coefficient is between 0.01 and 0.05. Because the friction coefficient is quite different, the friction resistance and friction loss are also greatly different.5. Physical aging, working creep O-ringIn the process of storage and use, rubber is affected by various conditions of natural and artificial environment, and its performance and appearance deteriorate with time. Rubber products are often damaged by heat, oxygen and ozone in the air, sunlight, wind, rain, snow, moisture, and various mechanical stress or chemical solvent erosion during use, so that the chemical structure of rubber is damaged, becoming soft or hard and brittle. Crack, rough surface, decline in mechanical properties, and gradually lose use value over time.When the O-ring is working, it will be subjected to a certain stress. Under the action of the stress, the shape of the O-ring will be permanently deformed, thereby partially or completely losing its working ability. U-ringUnder the influence of heat, light, oxygen, water, etc., the mechanical properties gradually decrease. Under the action of stress, the polyurethane U-ring will deform to a certain extent, but usually the permanent deformation is small and generally does not affect the work. PTFE Spring Energized SealsBecause the material itself is resistant to various solvents, temperatures, oxidants, etc., material deterioration and deterioration will not occur during storage and work.​The main component of the seal body is polytetrafluoroethylene, which may creep under the action of pressure, but because the sealing lip is mainly provided with the deformation restoring force by the spring, so it‘s not likely creep under the action of the working pressure and lose its working ability.

Comparison of PTFE Spring Energized Seals Between Oring and U-ring1. Components O-ringCommonly used rubber are nitrile rubber, fluorine rubber, silicone rubber and ethylene propylene rubber, etc. U-ringIt is generally polyurethane, and a few are harder rubber PTFE Spring Energized SealsThe body of the seal is generally filled PTFE, the matrix is PTFE, the filler is carbon fiber, copper powder, molybdenum disulfide, etc., and the spring is usually composed of various corrosion-resistant stainless steels and alloy spring.2. Storage life O-ringNitrile rubber, etc. are generally 2-10 years, fluorine rubber, silicone rubber 5-20 years U-ringUsually 5-10 years PTFE Spring Energized SealsTheoretically unlimited3. Working medium compatibility O-ring sealThe medium of O-ring seals is greatly depending on the material. There is no one that can hold all of them. For example, nitrile rubber is resistant to non-polar mineral oil, but it is poor for polar mineral oil, water, acid and alkali, etc. U-ringResistant to mineral oil resistant hydraulic oil, not resistant to water and water liquids. PTFE Spring Energized SealsPTFE is resistant to almost all media, including strong acid and alkali, organic solvents, various oils, inorganic salts and organic salt solutions.Stainless steel 304, 316, 718, etc. have strong corrosion resistance, and can be used in a variety of working media, such as various types of grease, water, etc.4. Friction and wear O-ringThe dry friction coefficient between rubber and steel is about 0.6-0.8, and the friction coefficient is between 0.3-0.5 when lubricated. U-ringGenerally, the friction coefficient is slightly smaller than rubber under the same working conditions. The dry friction coefficient is between 0.3 and 0.5. When there is lubrication, the friction coefficient is between 0.2 and 0.4. PTFE Spring Energized SealsThe dry friction between the filled PTFE and the metal material is about 0.15. When there is lubrication, the friction coefficient is between 0.01 and 0.05. Because the friction coefficient is quite different, the friction resistance and friction loss are also greatly different.5. Physical aging, working creep O-ringIn the process of storage and use, rubber is affected by various conditions of natural and artificial environment, and its performance and appearance deteriorate with time. Rubber products are often damaged by heat, oxygen and ozone in the air, sunlight, wind, rain, snow, moisture, and various mechanical stress or chemical solvent erosion during use, so that the chemical structure of rubber is damaged, becoming soft or hard and brittle. Crack, rough surface, decline in mechanical properties, and gradually lose use value over time.When the O-ring is working, it will be subjected to a certain stress. Under the action of the stress, the shape of the O-ring will be permanently deformed, thereby partially or completely losing its working ability. U-ringUnder the influence of heat, light, oxygen, water, etc., the mechanical properties gradually decrease. Under the action of stress, the polyurethane U-ring will deform to a certain extent, but usually the permanent deformation is small and generally does not affect the work. PTFE Spring Energized SealsBecause the material itself is resistant to various solvents, temperatures, oxidants, etc., material deterioration and deterioration will not occur during storage and work.​The main component of the seal body is polytetrafluoroethylene, which may creep under the action of pressure, but because the sealing lip is mainly provided with the deformation restoring force by the spring, so it‘s not likely creep under the action of the working pressure and lose its working ability.

There are many kinds of materials for PTFE Spring Energized Seal. Generally, most of the materials used are PTFE modified and filled, which can enhance the wear resistance and strength of PTFE. There are also some other special engineering plastics. The following are the materials we often use for your reference:Pure PTFEEspecially for light to moderate dynamic and static applications, limited wear and thermal resistance, low gas permeability, good low temperature properties, moderate to extreme vacuum applicationsWhite modified PTFEEspecially for light to moderate dynamic and static applications, limited wear and heat resistance, low gas permeability, good low temperature properties. Improved abrasion and seizure resistance for moderate to extreme vacuum applications.Black polymer filled PTFEIt has excellent wear resistance under high temperature, high pressure and high speed, especially suitable for water and water-soluble solutions. Abrasive action on soft metals under dry or harsh lubrication conditions.Tan polymer filled PTFESuperior heat and wear resistance, non-abrasive, recommended for medium to high speed dynamic applications on soft metalsGolden synthetic UHMW-PE (high density polyethylene)Fairly hard, long-term wear resistance, but limited thermal and chemical resistance, especially suitable for abrasive media, recommended for long-term wear resistance in difficult conditions.Transparent pure PTFEExcellent thermoplastic resistance to radiated radiation, but limited heat and abrasion resistance, not recommended as a general-purpose sealGrey self-lubricating glass filled PTFEProvides low pressure sealing. The material is softer and has an abrasive effect on soft metals,Grey self-lubricating organically filled PTFEGeneral purpose material with good heat and wear resistance, recommended for dry and poorly lubricated conditions Especially suitable for water and steam applicationsSynthetic UHMW-PE (High Density Polyethylene)Excellent abrasion and abrasive resistance, limited heat and chemical resistance.Black self-lubricating organically filled PTFEIt has stronger hardness and wear resistance, especially suitable for water and water vapor sealing in harsh environments, under high pressure It has good anti-deformation and extrusion ability, the best choice material for back-up ringPure PEEK (Aryl Ether Ketone)High modulus material, excellent heat resistance, recommended for back pressure ring or other special applications

The main application of PTFE Spring Energized Seal:The PTFE Spring Energized Seal is a special seal for the application of high temperature corrosion, difficult lubrication and low friction. The combination of different Teflon composite materials, high performance engineering plastics and corrosion-resistant metal springs can fully meet the increasingly stringent requirements in various industry. Typical applications are as follows1. Axial seals for rotary joints of loading and unloading arms2. Seals for glue dispensers or other dispensers systems3. Seals for vacuum pumps4. Beverage, water, beer filling equipment (such as filling valve) and seals for food industry5. Seals for traditional industries of automobile, aerospace, chemical industry and petroleum6. Seals for metering equipment (low friction, long life)7. Seals for other equipment or pressure vessels (liquefied gas)

Preparation before installationSealing Hardware Design Considerations:A. Using an installation tool ...

The sealing performance of thePTFE Spring Energized Seal is not affected by the lack of lubrication ...

It’s a spring-energized U-cup that uses a variety of jacket profiles, spring types and materials in rod and piston, face and rotary seal configurations. They are used when elastomeric seals fail to meet temperature range, chemical resistance or friction requirements.Jacket profiles are made from PTFE and other high performance polymers. Spring types are available in corrosion-resistant alloys, including stainless steel, Elgiloy and Hastelloy.Since jackets are machined and not injection molded, the seal configuration can be easily adjusted when needed to enhance seal performance. The seal is machined on CNC lathes to very close tolerances, using only premium grade materials. Each design is available in standard and special diameters and cross sections in inch-fractional, AS4716, and metric sizes. The full size range includes diameters from 1/32 to 150 inches, with radial cross-sections ranging from 1/32 to several inches across.Spring energized seal lips and spring energizer are compressed when installed into the seal gland. The resilient spring responds with constant force, pushing out the sealing lips and creating a gas tight seal against the sealing surfaces. The seal expands as pressure is introduced – increasing the sealing force beyond that provided by the spring and the jacket material.

Rubber gaskets are sheet-shaped rubber products that seal between two stationary surfaces of metal f...