PTFE Seal
Polytetrafluoroethylene (PTFE), also known as teflon/teflon or plastic king, is a copolymer of tetrafluoroethylene monomer. First, it was developed for national defense and cutting-edge technology and development but later it has gradually extended to civil use, which is generally applied to corrosion-resistant pipes, containers, pumps, high frequency communication equipment and wireless electrical equipment with high performance requirements.
PTFE sealhas become the common seal material for its unique properties.
Performance of PTFE Seal
Stability: almost all chemical resistance, strong acid, strong alkali or strong oxidizer and organic solvents have no effect on it.
Thermal stability: pyrolysis temperature above 400 ℃, therefore, it can work within the scope o - 200 ℃ ~ + 350 ℃.
Wear resistance: the friction coefficient of PTFE material is extremely low, only 0.02, which is 1/40 of rubber.
Self-lubricating: the surface of the PTFE material has a prominent self-lubricating property, and almost all of the viscous material cannot adhere to its surface.
Selection of PTFE Seal Material
However, the pure PTFE has the low strength and the abrasion performance is not very perfect. Usually some inorganic particles are put into the polymer PTFE, such as graphite, molybdenum disulfide, molybdenum disulfide, aluminium oxide, glass fiber, carbon fiber and so on to improve its mechanical properties. It also can be used with other polymers, such as polystyrene resin (PHB), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), poly (perfluorinated (ethylene/propylene copolymer (PFEP) blending method to extend its damping temperature range and improve the creep resistance. Therefore, different PTFE materialas produce all knids of PTFE mechanical seals.
|
properties |
unit |
pure PTFE |
glass fibire filled PTFE |
carbon filled PTFE |
|
density |
g/cm3 |
|||
|
tensile strength |
MPa |
30 |
15 |
13 |
|
℃ |
260 |
260 |
260 |
If you want to know more about high pressure mechanical seal, please contact us.
More information about Sealcon, please visit our website.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
Flygt Mechanical Seals FSU-90 | Replacement for: FSU-90 upper parts for flygt 3230, 3500, 3501 pump FSU-90 upper parts for flygt 3300, 3305, 3310, 3311, 3312, 3350, 3351, 3355, ... |
 |
Ceramic Mechanical Seal | Ceramic material refers to inorganic non-metallic materials made of natural or synthetic compounds through forming and sintering. It has the advan... |
 |
SEAL SPARE PARTS | Sealcon supplies a series of pump mechanical seal parts, which are developed and manufactured by using the latest technology. All the mechanical se... |
 |
MECHANICAL SEALING MATERIAL | Stainless Steel Seal Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with weak corrosive medium or Stain... |
 |
Mechanical Seal Material | According to statistics, about 80% to 95% of the leakage of mechanical seals is caused by sealing faces and friction pairs. Flygt pump seals has th... |
Похожие товары
 |
Split Oil Seal | Продавец: Xingtai Hongyu Sealing Technologies Co., Ltd | Split type skeleton oil sealis a kind of industrial seal, which is simply used to seal the medium... |
 |
oil seal kit | Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | oil seal kit is a collection of various Oil Seals and related components designed for specif... |
 |
High-Performance Valve Cover Gasket | Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | High-Performance Valve Cover Gasket Product Description: High-Performance Valve Cover Gasket... |
 |
freeze plug | Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | freeze plug We not only will try our best to offer excellent services to every customer, but... |
 |
Discover the Excellence of Bonded Seals | Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | Discover the Excellence of Bonded Seals Discover the Excellence of Bonded Seals Enhance you... |
