Silicone grades

HighQSil® FR Railway Sponge 055

The flame-retardant HighQSil® FR Railway Sponge 055 was specially developed for use in railway vehicles. It impresses with its combination of lightweight construction, fire protection and high flexibility.

EN 45545-2 compliant (R22/R23, HL3)
Self-extinguishing & low smoke
Outstanding elasticity with simultaneous fire protection

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Fire protection according to EN 45545-2 R22/R23: HL3

Meets the high requirements of the European railway standard - ideal for interior applications in rail vehicles.

Low flue gas emissions

Low smoke & non-toxic - for maximum safety in case of fire.

Low density

Weight-optimised for lightweight applications, without mechanical losses.

Temperature resistant

Resistant from -50 °C to +200 °C - also suitable for extreme climate zones.

Permanently elastic

Excellent restoring forces - ideal for sealing applications in continuous use.

Easy to process

Easy to extrude & adaptable to complex geometries.

Product description

HighQSil® FR Railway Sponge 055 is a flame-retardant silicone foam material that meets the highest requirements of the railway industry. It has been specially designed for use in sealing and insulation applications in railway vehicles – with an optimum balance of fire protection, elasticity and weight saving. The material fulfils the strict standards of EN 45545-2 (R22/R23, HL3) and impresses with its low smoke emission and environmental compatibility.

Thanks to its sponge-like structure, the product is extremely flexible and can be easily adapted to a wide range of installation geometries. With its constant elasticity, it is ideal for applications such as door and window seals, cable bushings and insulation pads in train cabins or technical areas.