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Flamastic KBS-SEALANT™

Flamastic KBS SEALANT™ is an unique high temperature sealant Originating from NASA research. The product is today an ultra fire protective sealant widely used global to prevent fire from spreading between and within different constructions. Flamastic KBS SEALANT™ is Nontoxic and Nonhalogenated. It resists fuel, oil, diluted acids, water, UV, frost as well as most organic solvents. Certified according standard Quality System ISO 9001 and  Environment System ISO 14001.
In summer 1966 three American astronauts burn to death in a space capsule on top of the first Apollo rocket during a test. What happened ? Instead of air, the space capsule contained a high percentage of oxygen. Apparently, a spark from the electrical equipment ignited the plastic insulation of cabling and the resulting flash fire caused the death of the astronauts.
Since then ESA, NASA and others use the Limiting Oxygenindex test (ASTM D2863) as screening tool for materials intended for space vehicles. They require materials which do not support combustion when tested 10 % higher than the expected oxygen concentration.
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   Oxygenindex ISO 4589-2
The Limiting Oxygen Index (LOI) test method [ISO 4589-2] provides a good indication of the flammability of plastic materials and can be adopted for the characterization of materials. The LOI is determined with a special apparatus. It measures the percentage of oxygen in a flowing oxygen/nitrogen mixture, necessary to support downward flaming combustion on material located in the flow stream. Most organic materials range from 14 to 30%. A high LOI value represents a material that burns with difficulty or is incombustible. The LOI values of cable insulation and jacketing materials range between 18 to 35 % and Acrylic-based fire protection products are between 40 - 70 %. This test is included in our manufaturing control and identification (fingerprint) of Flamastic KBS-SEALANT™ and the value is both temperature stable and age-resistant. The product is included in KBS PANELSEAL HD200™ and KBS PANELSEAL ABL™.

LOI values ISO4589-2 of different materials [%] 



Crosslinked PE (XLPE) 


Polypropylene (PP) 




Soft PVC  


Rigid PVC


Acrylic based PFP




Flamastic KBS-COATING™


Flamastic KBS-SEALANT™



Related information
Technical datasheet

flaggasvensk.gif (1024 bytes) In Swedish

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