Teflon Bearing Seals
|
property |
unit |
test method |
test parameter |
typical value |
|
specific gravity |
g/cm3 |
ASTM D792 |
2,17 |
|
|
tensile strength |
MPa |
ASTM D638 |
Microtensile specimen of ASTM D1708, speed of testing 0.8mm/s |
29 |
|
ultimate elongation |
% |
ASTM D638 |
Microtensile specimen of ASTM D1708, speed of testing 0.8mm/s |
300 |
|
Compressive strength 1% deformation |
MPa |
ASTM D695 |
4,6 |
|
|
hardness |
Shore D |
ASTM D2240 |
(Shore D - 15 sec) |
58 |
|
Friction coefficient - dynamic |
ASTM D 3028 (1) |
speed 0,08m/s load 0,1 N/mm2 , sliding surface steel roughness Ra = 0,5 micron |
0,06 |
|
|
Friction coefficient - static |
ASTM D 3028 (2) |
0,09 |
||
|
Modulus of Elasticity |
MPa |
ASTM D638 |
281 |
|
|
Coefficient of thermal expansion from 25 to 100°C |
°C-1 |
ASTM E 831 |
16x10-5 |
|
|
Dielectric Strength (short time Test) |
kV/mm |
ASTM D149 |
36 |
Introduction
Teflon bearing seals are a kind of seal made of Teflon material, which has excellent high-temperature resistance, corrosion resistance, wear resistance, and low friction performance.
There are various types and structures of bearing seals. Common types include O-rings, V-rings, U-rings, etc.
Its bearing seals are widely used in various fields, such as aerospace, chemical industry, petroleum, food, etc.
Sealing Solutions
1. Static sealing solution: Static sealing refers to the sealing between two static surfaces, such as pipe joints, container interfaces, etc. Teflon bearing seals can achieve reliable static sealing through pre-compression and adaptive load. Between the seal and the pipe or container interface, some auxiliary sealing materials, such as rubber gaskets, metal O-rings, etc., can be used to enhance the sealing effect.
2. Dynamic sealing solution: Dynamic sealing refers to the sealing between two moving surfaces, such as shaft and bearing, shaft and gear, etc. Reliable dynamic sealing is achieved by placing a bearing seal between the moving surfaces. In dynamic sealing, factors such as friction resistance, wear resistance, and service life need to be considered to ensure the sealing effect and the normal operation of the mechanical system.
3. High-temperature sealing solutions: Bearing seals can maintain good performance and stability in high-temperature environments, so high-temperature sealing solutions can be provided. In high-temperature environments, ordinary seals often suffer from problems such as aging, deformation, and failure, while Teflon-bearing seals can maintain stable performance and sealing effect under high temperatures.
4. Sealing solutions in corrosive media: In some corrosive media, such as acid, alkali, salt, etc., ordinary seals often cannot meet anti-corrosion requirements. Teflon-bearing seals can provide sealing solutions in corrosive media, have good corrosion resistance and stability, and can maintain good performance and sealing effects in corrosive media.
Applications
1. In the aerospace field, PTFE-bearing seals are widely used in sealing engines, hydraulic systems, and pneumatic systems.
2. In the automotive industry, Teflon bearing seals are widely used in sealing automotive engines, gearboxes, and braking systems.
3. In the field of the chemical industry, bearing seals are widely used in sealing various chemical reactors, chemical pipelines, and storage tanks.
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