Color – own dark grey color PTFE-2 material
PTFE 102 is a semi-finished made of filled semi-crystalline thermoplastic based on polytetrafluoroethylene.
Due to its special composition, PTFE 102 has a very good physical characteristics and better fitting properties other than PTFE 101.
The chemical properties are high same as with PTFE 101, but some ingredients may cause destruction of fillers.PTFE 102 has an exclusively wide temperature range (from -200°С up to +260°С), very low friction coefficient and high chemical resistance. PTFE 102 has a «non-stick» surface and doesn’t absorb moisture. By its fillers the time-depended deformations lower than with PTFE 101 (reduction in cold flow, increased resistance to extrusion).
Critical pv values (p – power, v – speed)
- v=0,05 m/s p=0,032 N m/mm2
- v=0,5 m/s p=0,039 N m/mm2
- v=5 m/s p=0,039 N m/mm2
Resistance PTFE-2 material
Main material and glass fibers are resistant to most chemicals, only molybdenum disulphide can be exposed to the impact of chemicals that is why test for resistance are required. PTFE 102 is not suitable for use in area with high radiation. Dynamic use in water is not recommended (high depreciation).
Application
PTFE 102 can be used for production of U-Rings, seals, anti-extrusion back-up rings, support rings, chevron seals and guide rings. PTFE 102 mainly used in applications with high thermal and chemical stress.<br/>
This material can also be used in cases where low friction, high extrusion and deformation resistance are required, and PTFE 101 can not be used.
Mainly used
- Seals for low friction at high stress
- Sliding and back-up elements
- Seal part with elastic support (elastomers, springs)
Material Data Sheet
Properties | Value | Unit | Standard |
|---|---|---|---|
Hardness | ≥55 | Sh D | ASTM D2240 |
Density: | 2,20 – 2,30 | g/cm³ | ASTM D792 |
Tensile strength: | ≥18 | N/mm2 | ISO 12086 ISO 527 |
Elongation at break: | ≥230 | % | ISO 12086 ISO 527 |
Compressive strength at 1% deformation | ≥8 | N/mm² | ASTM D695 |
Deformation under load at room temperature 24 hours at 13,7 N/mm² | ≤8 | % | ASTM D621 |
Permanent deformation as above after 24 hours of rest atroom temperature | ≤4 | % | ASTM D621 |
Coefficient of Linear Expansion ( 25° – 100°C ) | 9 – 12 | 10-5 (mm/mm)/ °C | ASTM D696 |
Min. service temperature | – 200 | °C | |
Max. service temperature | + 260 | °C |
All above established data results from random tests which were taken from the functioning production. All data was stated based on standard test-products in accordance with ISO, DIN and ASTM standards and can substantially not be extended to the completed seal. Our practical technical recommendation, either oral, written or through tests is given in conformity with our best knowledge. However, this data is to be regarded as non-obligatory advice, also taking into consideration any protective rights of a third party, and does not acquit you from making tests with our product in relation to its adaptability for the assigned process and intendment. Utilization, application and processing of the products befall completely outside of our control and are therefore solely your liability. As regards the responsibility, it will be limited to all damages in the value of the product which we delivered and you applied. Certainly, we do assure the immaculate quality of our products in concordance with our general sales and delivery conditions.
