Smooth-On Rebound 25 Silicone Mold Rubber Kit

$41.99 / EA

Smooth-On Rebound 25 Silicone Mold Rubber Kit

Rebound 25 is an easy-to-use platinum-cure silicone rubber which self-thickens for making brush-on molds of almost any model. Mixed 1A:1B by volume (no scale necessary), Rebound rubber can be applied with a brush or spatula to vertical surfaces without sagging and will cure with negligible shrinkage to a flexible rubber.

Rebound 25 is soft, flexible and is good for making molds of models with deep undercuts. Depending on model configuration, Rebound 25 can be inverted as a glove molds. Rebound 40 is harder and less flexible. These products are compatible. For example, you can apply two coats of Rebound 25 and back it up with two coats of Rebound 40.

Advantages Over Urethane Brush-On Rubber: Rebound will not stick to most surfaces, so surface preparation is minimal. Two liquids that mix easily together and stands up better to production casting of resins and low temperature melt metal alloys. Has a long library life. 4 thin layers are all that is necessary to make a flexible, strong and durable production mold for casting wax, gypsum, concrete or resins (urethane, polyester, etc.). And because Rebound is a platinum silicone, it will last for many years in your mold library. Applications include reproducing sculpture, architectural restoration, making candle molds, casting pewter, etc.

Mold Performance & Storage - The physical life of the mold depends on how you use it (materials cast, frequency, etc.). Casting abrasive materials such as concrete can quickly erode mold detail, while casting non-abrasive materials (wax) will not affect mold detail. Before storing, the mold should be cleaned with a soap solution and wiped fully dry. Two part (or more) molds should be assembled. Molds should be stored on a level surface in a cool, dry environment.

Mix Ratio By Volume: 1A:1B

Mix Ratio By Weight: 1A:1B

Pot Life: 20 Minutes

Cure Time: 6 Hours

Shore Hardness: 25 A

Specific Gravity: 1.14 g/cc

Specific Volume: 23.5 cu. in./lb

Tensile Strength: 515psi

Elongation @ Break: 690%

Die B Tear Strength: 102pli

Color: Orange

Shrinkage: <.001in. / in.