This advanced pigment system is engineered for high-temperature vulcanizing (HTV) silicone rubbers and industrial elastomers that undergo prolonged exposure to extreme heat during processing and service. Standard organic pigments degrade and shift color when subjected to the 150–250°C cure cycles typical of HTV extrusion or molding, but this heat-stable formulation is built to survive and thrive under those conditions.
The colorant is a masterbatch concentrate based on a high-consistency silicone gum carrier that matches the rheology of HTV bases. It is supplied as a strip, pellet, or slab, ready to be compounded directly on a two-roll mill or in a kneader. The inorganic and complex-metal pigments used are selected for their thermal stability and chemical inertness, ensuring that the final vulcanizate retains color integrity through post-cure cycles, steam sterilization, and long-term service at temperatures up to 300°C.
Because it is fully reactive, this pigment crosslinks into the silicone network during peroxide or platinum curing, immobilizing the color and preventing migration. The cured rubber displays no surface chalking, no color bleed into adjacent sealants, and no discoloration from hot air aging or UV exposure. This makes it suitable for demanding applications like automotive turbocharger hoses, aerospace gaskets, industrial seals, and medical device components that are autoclaved repeatedly.
Dispersion is rapid and uniform, yielding streak-free sheets and profiles even at high pigment loadings. It is compatible with a wide range of HTV bases—dimethyl, vinyl-methyl, fluorosilicone—and does not interfere with cure kinetics. We offer standard safety-critical colors such as red, orange, and yellow for high-voltage cable insulation, as well as custom-matched industrial greys, blacks, and branded hues. For manufacturers producing performance silicone parts that must maintain their visual identity under the most punishing conditions, this heat-stable pigment system provides unyielding color integrity from mill to end-use.
