This high-viscosity silicone pigment paste is engineered for situations where standard liquid colorants would drip, sag, or fail to deliver sufficient tinting strength. With a concentrated pigment load typically two to three times higher than liquid alternatives, it is the ideal choice for coloring thixotropic silicones, brush-on mold rubbers, and form-in-place gaskets where precise, non-slumping application is required.
The paste is based on a high-molecular-weight silicone fluid carrier that provides body and prevents pigment settling during storage. Even after extended shelf life, the paste requires only a brief kneading or stirring to restore its uniform consistency. Its heavy-bodied nature allows it to cling to vertical and overhead surfaces, enabling mold makers to color brush-on silicones layer by layer for visual confirmation of thickness and coverage. This is particularly useful when building multi-layer mold jackets or repair patches.
Despite its thickness, the paste disperses smoothly into base silicone compounds under manual mixing or low-shear stirring. Recommended usage rates range from 0.5% to 3% by weight, depending on desired depth of color and hiding power. The pigment chemistry is fully reactive, so it covalently bonds into the silicone network during cure. There is no surface blooming, oil bleed, or color transfer to casting resins—even under pressure or heat.
This color paste is compatible with tin-cure silicones and, in a specialized variant, with platinum-cure systems. It is available in a palette of intense colors optimized for industrial coding: safety orange for equipment seals, red for high-visibility gaskets, and blue for food-contact mold differentiation. For engineers who require a heavy-duty pigment that stays where it is placed and delivers vivid, long-lasting color without compromising silicone performance, this high-concentration paste offers an efficient and reliable solution.
