Introducing: TeflexSealing can be difficult when you are dealing with extremely high temperatures and hostile chemicals. These types of applications prohibit the use of the regular rubber O-ring seals. Therefore, ERIKS introduced: Teflex.
What is a Teflex O-ring made of? A Teflex O-ring has an elastomeric energising core (made from Viton® or Silicone) and a jacket of fluoropolymer (made from Teflon® FEP or PFA). ERIKS’ worldwide experience with thousands of applications ensures that Teflex is a the right choice.
Industries which use Teflex It is hard to think of a market where Teflex O-rings are not being used. The following list is an overview of the industries in which Teflex is used:
- Food and drink processing
- Petrochemical refining
- Automotive industry
- Aerospace industry
- Pharmaceutical industry
- Cosmetics and perfumery
- Paint and dye manufacturing
4 different types of Teflex products1. PFA Jacket on solid Silicone core
Preferred for higher temperature applications. Shares the same temperature service limits as the Silicone core.
Temperature range from: -60°C to +260°C / -76°F to +500°F.
2. PFA Jacket on solid Viton® core
PFA offers higher abrasion resistance to that of FEP.
Temperature range from: -20°C to +204°C / -4°F to +392°F.
3. FEP Jacket on solid Viton® core
The core, made of Viton, is designed to provide very low compression set results. This spreads up the memory of the FEP jacket.
Temperature range from: -20°C to +204°C / -20°F to +392°F.
4. FEP Jacket on solid Silicone core
A cheaper version of the FEP Jacket with the Viton® core.
Temperature range from: -60°C to +204°C / -76°F to +392°F.
When not to use Teflex Over the last 10 years Teflex has proven to be a perfect sealing solution for typical applications. However, there are also applications where the use of Teflex is not recommended. These applications have the following characteristics:
- The housing design requires excessive stretch. Teflex is very difficult to stretch.
- The media in contact with the O-Ring has an abrasive nature, e.g. sand and slurry.
- Dynamic use where high speeds and poor surface finishes are encountered