Brush-OnŽ Series Urethane Rubber Product Information | Smooth-On
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Brush-OnŽ Series High Tear Strength Brushable Urethane Rubber
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Smooth-On's Brush-On® Series of mold rubbers are extremely versatile and are famous for their abrasion resistance and high tear strength. They have the convenience of a one-to-one mix ratio and are easy to mix and apply with a brush or spatula. Brush-On® polyurethane rubber paints onto vertical surfaces without sagging and will cure with negligible shrinkage to durable rubbers that perform and last in production. Each will capture exact detail from any original model.

Brush-On® 40 is used for models with deep undercuts. Brush-On® 40 can be used to make glove molds. Brush-On® 50 and Brush-On® 60 possess superior abrasion resistance and tear strength and are ideal for casting concrete and hard plasters in applications where less flexibility is required. All three rubbers are suitable for reproducing sculpture, architectural restoration and production casting of concrete.

Brush-On® 35 Urethane Rubber is easy to mix and apply with a brush or spatula, paints onto vertical surfaces and will cure with negligible shrinkage to a durable rubber that performs in production. Applications for Brush-On® 35 include on-site architectural restoration molds, reproducing sculpture (lost wax process) and making special effects.
  • Brush-On® 35 - Shore 35A hardness
  • Brush-On® 40 - Shore 40A hardness
  • Brush-On® 50 - Shore 50A hardness
  • Brush-On® 60 - Shore 60A hardness

Product Name: A:B Mix RatioDemold TimeElongation at BreakMixed ViscosityPot LifeShore A HardnessTear StrengthWeight: CU.IN./LBHow much
do I need?
Brush-OnŽ 351:1 by volume16 hours700%Brushable20 min.3567 pli21.5
Brush-OnŽ 401:1 by volume16 hours1000%Brushable20 min.4060 pli23.7
Brush-OnŽ 501:1 by volume16 hours400%Brushable20 min.5080 pli23.7
Brush-OnŽ 601:1 by volume16 hours400%Brushable20 min.6080 pli23.5

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