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Smooth-On Polyurethane Rubbers

Clear Flex 30


Cured castings are:

  • Clear
  • Flexible
  • UV Resistant

Vibrant colors and color effects are achieved by adding pigments. Applications include making model reproductions, decorative cast pieces, special effects, prototype parts.

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Availability : This product is no longer in stock

Kit de 880grm.

33,00 €

tax excl.

Clear Flex®30 is a mercury-free and phthalate-free water white clear urethane liquid rubber compound designed for applications that require absolute clarity and resistance to sunlight. Low viscosity ensures easy mixing and pouring. Clear Flex® 30 cures at room temperature with negligible shrinkage.

PREPARATION - Store and use at room temperature (73°F / 23°C). These products have a limited shelf life and should be used as soon as possible. Liquid urethanes are moisture sensitive and will absorb atmospheric moisture. Environmental humidity should be as low as possible. Mixing tools should be made of metal or plastic.


Apply Sealing and Release Agents - Clear Flex® is adhesive and will bond to many surfaces. If pouring Clear Flex® into a porous mold (such as plaster), seal the surface with SuperSeal®. Follow sealer coat with Universal Mold Release®. If pouring Clear Flex® into a urethane mold, apply Universal Mold Release® before casting. Use as directed. If unsure about surface compatibility, a small scale test casting should be made.

Selecting A Mold Rubber - Clear Flex® 30 will cure in 16 hours at 73°F / 23°C. Surface may remain sticky or tacky for some time depending on which mold rubber is used to cast Clear Flex® into. The tacky surface on newly demolded castings can be eliminated by post curing the casting out of the mold at 150°F / 60°C for 5 hours.

If Using Mold Max® Silicone - to prevent cure inhibition, post cure newly made silicone mold for 4 hours at 150°F / 60°C and let cool prior to casting Clear Flex®.

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