MSR primer is a 1-component, permanently elastic, fast-curing adhesive/sealant based on a silyl-modified polymer (smp). MSR primer has been tested and certified according to the International Maritime Organization's fire test procedures for surface flammability, resolution A.653 (16), and it is approved for use in wall, ceiling, and floor applications. Simson MSR Bedding Compound - solvent- and isocyanate-free. - Permanently elastic in the temperature range -40°C - +100°C. - MSR Bedding Compound has sound- and vibration-damping properties.