Clear Silicone

RTV12 is a two-component, low viscosity, clear silicone potting compound that cures at room temperature to a soft, pliable rubber. RTV12 will cure in deep sections without additional heating or moisture. It has been designed to achieve primerless adhesion to many substrates, including metals, plastics, and ceramics typically found in electronic assemblies.

RTV12C curing agent is mixed with RTV12A base compound to produce a cured clear silicone rubber with see-through properties in greater thicknesses. This clear RTV allows visual checking of the components during pouring, and easy identification, repair, and replacement of components when necessary.

RTV12 is recommended for evaluation as a potting material to provide environmental protection for electrical and electronic assemblies. When cured, the soft, rubbery property of RTV12 cushions against mechanical shock and vibration. Its excellent electrical insulating properties make it a promising choice for both high and low voltage electrical assemblies. This clear RTV is also used as a casting silicone in many applications.

For high temperature RTV silicones, use RTV60 or RTV88. For mold making use our blue or white RTVs – RTV630 and RTV11. For a fast cure clear version use RTV615.

We also offer epoxy and urethane potting compounds.

Features & Benefits

  • Clear – allows easy identification of components
  • Primerless adhesion to many metals and plastics
  • Repairable
  • Room temperature cure
  • Excellent electrical insulating properties
  • Can be used with materials that cause cure inhibition with other RTVs
  • Specially formulated to minimize copper corrosion
  • Flows easily in and around complex electronic assemblies
  • Easy to use on production lines
  • May be mixed by hand or by machine
MG # Momentive # Min QTY 1 Cost 2 (USD) Min QTY 2 Cost 2 (USD) Min QTY 3 Cost 3 (USD)

Technical Documents

Potting Compounds Catalogue

Warning WARNING! This product can expose you to chemicals including toluene, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to