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
 |
MECHANICAL SEALS FOR PUMP | Mechanical seal for pump is a kind of dynamic seal assembly, which is widely used on the rotating shaft. It is also known as the end seal. Consisti... |
 |
SiC Mechanical Seal | Silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For... |
 |
Ceramic Mechanical Seal | Ceramic materialrefers to inorganic non-metallic materials made of natural or synthetic compounds through forming and sintering. It has the advanta... |
 |
O RING MECHANICAL SEALS | O-rings are one of the most frequently used products in sealing applications, relatively inexpensive and reliable. O-rings come in many styles and ... |
 |
PTFE TEFLON BELLOW MECHANICAL SEALS | PTFE Teflon Bellow Mechanical Sealfor Sale China PTFE Teflon Bellow sealhas been widely applied in the area of atomic energy, defense, aerospace, e... |
Same products
|
|
卖方: 石家庄英纺贸易有限公司 | ||
 |
Micronized wax powder for shoe polish processing | 卖方: Syntop chemical Co.,Ltd. | Micronized wax powder is used as a functional additive in shoe polish processing. Its core functi... |
 |
Preform Mould | 卖方: Taizhou Qihong Mold Co., Ltd. | Taizhou Qihong Mold Co., Ltd. provides professionally designed Preform Mould solutions for modern... |
 |
Micronized Wax used as dispersant for color masterbatch | 卖方: Syntop chemical Co.,Ltd. | Micronized wax is a highly effective pigment dispersant in color masterbatch. Its core mechanism ... |
 |
Automated Parallel Concentrator ORAS-12 | 卖方: Beijing Orun Scientific Instrument Co., Ltd. | Automated Parallel Concentrator ORAS-12 The direction of the blow needle is adjustable. Nitrogen... |
