Product Overview
BISCO L3 Silicone Foam — Technical Overview & FAQs
Product Overview
BISCO L3 is a medium-density, closed-cell silicone foam engineered to provide excellent vibration isolation and damping performance. Designed specifically for use in mass-transit and railcar floating-floor applications, L3 isolates vibration, enhances passenger comfort, and ensures structural durability under heavy mechanical loads. The foam delivers outstanding resistance to heat, UV, ozone, and weather exposure, maintaining flexibility and mechanical integrity in extreme environments.
Applications
L3 is primarily used in railway flooring systems as part of floating-floor assemblies to reduce vibration and noise transmission. It is also suited for vibration isolation pads, strips, and cushioning in mass-transit vehicles, heavy equipment, and industrial flooring systems requiring long-term vibration management and environmental durability.
Performance Advantages
BISCO L3 combines vibration damping with superior flame and smoke resistance. It meets stringent transportation standards for low smoke evolution and flame spread, while maintaining performance from –67 °F to +392 °F. The material resists environmental aging and performs reliably under repeated mechanical stress, making it an ideal long-term isolation solution.
Key Properties
Typical density ≈ 29 lb/ft³. Compression force deflection (ASTM D1056) ≈ 11 psi at 25 % deflection. Compression set after 22 hours at 212 °F and 50 % compression ≈ 2.4 %. Water absorption ≈ 0.5 %. Flame spread index (ASTM E162) = Meets. Smoke density (ASTM E662) = Meets. Operating temperature range = –67 °F to +392 °F. Low-temperature brittleness = Pass. UV and weather resistance = Pass
FAQs
What is BISCO L3 silicone foam?
It’s a medium-density closed-cell silicone foam designed for vibration isolation and damping in high-stress environments such as rail and mass-transit systems.
Where is BISCO L3 used?
L3 is used in railcar flooring systems, mass-transit vehicle interiors, and other industrial installations that require vibration reduction and noise isolation
What are the benefits of BISCO L3?
L3 offers superior vibration damping, low smoke evolution, low flame spread, and excellent weather and temperature stability (–67 °F to +392 °F).
Is BISCO L3 flame and smoke rated?
Yes. It meets flame-spread (ASTM E162) and smoke-density (ASTM E662) standards commonly required in transportation applications.
Can BISCO L3 be supplied in custom configurations?
Yes. It is available in sheets, rolls, tapes, or precision-die-cut pads and gaskets, with optional adhesive backing for simplified installation.
Contact H-O Products for BISCO L3 samples, data sheets, or engineering support for your next vibration-isolation project - contact us.