Solvay Tecnoflon PL 557 FKM Elastomer

Features Of Solvay Tecnoflon PL 557 FKM Elastomer

1. High fluorine content (≈68 wt%) for exceptional resistance to aggressive chemicals and hydrocarbons.

2. Optimized for low-temperature flexibility with a glass transition temperature (Tg) of approximately −15 °C.

3. Excellent compression set resistance, maintaining sealing integrity under prolonged thermal and mechanical stress.

4. Good processability in standard rubber compounding and molding equipment, including injection and compression molding.

5. Outstanding resistance to high-temperature aging up to 200 °C in air and inert atmospheres.

Typical Applications Of Solvay Tecnoflon PL 557 FKM Elastomer

1. Aerospace fuel system seals and diaphragms exposed to jet fuels and synthetic lubricants.

2. Automotive powertrain components, including turbocharger hoses and valve stem seals.

3. Chemical processing equipment gaskets and O-rings handling strong acids, bases, and solvents.

4. Oil & gas downhole elastomeric parts subjected to sour gas (H₂S), CO₂, and high-pressure hydrocarbons.

5. Semiconductor manufacturing fluid-handling seals requiring ultra-low extractables and plasma resistance.

Specifications Of Solvay Tecnoflon PL 557 FKM Elastomer

Solvay Tecnoflon PL 557 FKM Elastomer – Frequently Asked Questions (FAQ)

Q1: What distinguishes Solvay Tecnoflon PL 557 from other FKM elastomers?

A: Tecnoflon PL 557 is a peroxide-curable, low-viscosity, highly fluorinated fluoroelastomer designed for demanding dynamic sealing applications. Its unique polymer architecture provides enhanced resistance to aggressive chemicals—including amines, ketones, and polar solvents—alongside improved processability in high-precision molding operations compared to conventional bisphenol-cured FKMs.

Q2: Is Tecnoflon PL 557 suitable for use in automotive fuel systems?

A: Yes—PL 557 is widely specified in modern automotive fuel handling components due to its exceptional resistance to oxygenated fuels (e.g., E85), biofuels, and fuel additives. It maintains dimensional stability and seal integrity under extended exposure at elevated temperatures typical of under-hood environments.

Q3: How does the peroxide cure system affect processing and final part performance?

A: The peroxide-curable formulation enables higher thermal stability and improved compression set resistance in the cured state. Processing requires careful control of cure temperature and time to avoid premature scorch; it typically performs well in high-speed injection molding and transfer molding where consistent crosslink density and low post-cure shrinkage are critical.

Q4: Can Tecnoflon PL 557 be compounded with standard FKM fillers and processing aids?

A: Yes—PL 557 is compatible with common FKM compounding ingredients such as carbon black, calcium carbonate, and silica, as well as standard peroxide initiators and co-agents. However, filler selection and loading levels should be optimized to preserve its low-viscosity advantage during mixing and ensure uniform dispersion without excessive shear heating.