Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow SILASTIC RTV-3081-VF Mould-Making Compound

Dow SILASTIC RTV-3081-VF is a platinum-cured, low-viscosity silicone mould-making compound offering exceptional tear strength, dimensional stability and rapid room-temperature vulcanization. Ideal for precision casting of polyurethane, epoxy and polyester resins. Features excellent detail reproduction, low shrinkage and outstanding release properties without surface tack.
  • dow silastic rtv 3081 vf mould making compound_b5b1c65b
  • dow silastic rtv 3081 vf mould making compound_b5b1c65b

Features Of Dow SILASTIC RTV-3081-VF Mould-Making Compound

  1. Low-viscosity, pourable two-part platinum-cure silicone system for excellent air release and fine detail reproduction.

  2. Exceptional dimensional stability and low shrinkage (<0.2% after 24 hours at room temperature) ensure high-fidelity mould replication.

  3. Fast demould time — typically 2–4 hours at 25 °C — enabling rapid prototyping and short production cycles.

  4. Excellent tear strength and elongation (>250%) provide durable, reusable moulds even for undercuts and complex geometries.

  5. Non-corrosive, odourless cure with no by-products — ideal for sensitive applications including art casting and food-grade prototyping (when fully cured per specifications).

Typical Applications Of Dow SILASTIC RTV-3081-VF Mould-Making Compound

  1. Industrial prototype moulding for functional testing of plastic, polyurethane, and wax parts.

  2. Artistic and architectural casting of gypsum, concrete, resin, and low-melt metals.

  3. Manufacturing of flexible production tooling for vacuum forming and composite lay-up.

  4. Replication of museum artifacts, heritage objects, and anatomical models requiring surface fidelity and chemical inertness.

  5. Custom encapsulation and potting solutions where thermal stability and electrical insulation are critical.

Specifications Of Dow SILASTIC RTV-3081-VF Mould-Making Compound

Chemical TypePlatinum-cured addition-cure silicone elastomer
Product FormTwo-component liquid (Part A: base; Part B: catalyst)
Appearance (Uncured)Translucent, low-viscosity liquids (Part A: water-white; Part B: pale yellow)
Mix Ratio by Weight10:1 (A:B)
Cure MechanismRoom-temperature or elevated-temperature addition cure
Shore A Hardness (7 days @ 25 °C)30 ± 2
Tensile Strength (ASTM D412)5.5 MPa typical
Elongation at Break (ASTM D412)≥250%


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