F-164 FR REV1 is a castable polyurethane elastomer containing fire retardants that will meet a UL 94V-2 Rating. This grade is useful in applications where a tough, 60 Shore A rubber with self-extinguishing properties is required. RoHS and REACH compliant F-164 is ideal for special effects and the making of props, over molding and making prototypes and production. This grade offers both high tensile and tear strength with an easy to use 50/100 mix ratio by weight. In this kit you will receive 4lb of Part A and 8lb of Part B. Translucent amber in color, this grade can be pigmented if required using a polyurethane liquid paste pigment. For details on the work time , gel time and full demold time please consult the technical data sheet.