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 |
There are many seal ring suppliers, but Hangzhou SealconFluid Machinery Co., Ltd are one of the best choices for you. we provide sealcon china, quality mechanical seals and etc. Formore information, please feel free to contact us!
在线联系供应商
Other supplier products
Stainless Steel Seal | Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with weak corrosive medium or Stainless Steel, such as ai... | |
Seal Spare Parts Spring | Introduction of Seal Spare Parts Spring For a mechanical seal, the initial closing force ensures that the seal will function properly from startup... | |
Seal Spare Parts Spring | Introduction ofSeal Springs For a mechanical seal, the initial closing force ensures that the seal will function properly from startup. In end- or ... | |
O.E.M MECHANICAL SEALS | With mechanical seal factory, Sealconis able to design and manufacture a wide range of OEM mechanical seals. Our aim is to improve product quality ... | |
MECHANICAL SEALS FOR PUMP | Mechanical shaft seal for water pump is a kind of dynamic seal assembly, which is widely used on the rotating shaft. It is also known as the end se... |
Same products
A1418-C01 Covidien > Nellcor Compatible SpO2 Adapter Cable with 240cm Cable 7pin-DB9 | 卖方: APK Technology Co., Ltd. | Parameter of A1418-C01 SpO2 Adapter Cables APK Part Number A1418-C01 OEM P... | |
SpO2 Adult Ear Clip | 卖方: APK Technology Co., Ltd. | SpO2 Adult Ear Clip Pulse Oximeter Parameters of 1032047 Spare Parts APK Part Number 1032047 OEM... | |
SpO2 Adult Rubber Ear Clip Holder | 卖方: APK Technology Co., Ltd. | Parameters of 1032046 Spare Parts APK Part Number 1032046 OEM Part Number N/A OEM Manufacturer N... | |
A1411-SN07 Nihon Kohden Compatible Neonatal SpO2 Sensor with 90cm Cable DB9(9pin) | 卖方: APK Technology Co., Ltd. | Parameters of A1411-SN07 SpO2 Sensor APK Part Number A1411-SN07 OEM Part Number N/A OEM Manufactu... | |
A1411-SI01 Nihon Kohden Compatible Infant SpO2 Sensor with 90cm Cable DB9(9pin) | 卖方: APK Technology Co., Ltd. | Parameters of A1411-SI01 Infant SpO2 Sensor APK Part Number A1411-SI01 OEM Part Number N/A OEM Ma... |