During a client’s development project, Techné engineers provide advisory support: the profile is optimized based on the chosen manufacturing process. Seal design, material, and tolerances are reviewed with the client.
Several factors influence material and specific compound selection: elastomer type, crosslinking agents, hardness, compression set, etc.
Techné standardly conducts a visual inspection using the Acceptable Quality Level (AQL) 1.0 level II standard as the decision criterion.
This method, widely used in the industry, is applied to a random sample of products once they are manufactured and packaged.
Easy assembly, cleanliness, improved sliding and lifespan of parts, reduced assembly efforts, identification and customization of seals: beyond sealing, other questions may arise to evolve a system.
Thanks to its coating workshop, Techné is a preferred partner to address these questions.
IIR (isobutylene isoprene rubber), also called PIB (polyisobutylene), is resistant to external ageing, extreme temperatures and ozone.
IIR has good compatibility with glycol-based brake fluids and possesses a high gas impermeability. However, it is not very resistant to oils and greases.
TPU, also called thermoplastic polyurethane, is a thermoplastic elastomer material that combines the elastic properties of elastomers and the mechanical properties of plastics.
The main properties of TPU are its excellent abrasion and wear resistance. Therefore, thermoplastic polyurethane is especially used for hydraulic and pneumatic applications in the form of CNC machined sealing parts and moulded sealing parts.
FFKM (perfluoroelastomer) is especially appreciated for its resistance to very high temperatures (up to 330 °C) and its “universal” resistance to chemical substances (except for fluorinated substances such as Freon®). FFKM is the most expensive elastomer rubber and is therefore mainly used for extreme applications.
