Product

 

 

Remix each of the two components (part A and B) every time before using.

 

1. Mixing the two components

The components A and B are mixed by weight in the above-indicated ratio. The mixing can be carried out either by hand or by using a low-speed electric or pneumatic mixer to minimise the introduction of air and to avoid any temperature increase.

It is also possible to use a special mixing and dispensing machine for the two silicone components. Further information is available upon request.

2. Degassing

The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing.

The silicone mixture expands 3 to 4 times its initial volume and bubbles rise to the surface. Wait a few minutes to complete the degassing and then release the vacuum.

The silicone is ready for pouring, either by gravity or under low pressure.

Note: Release the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter / height ratio.

3. Polymerisation

The system polymerises at 23°C. The curing may be slowed down at lower temperature or accelerated by heat.

Contact with certain materials can inhibit the crosslinking. See list below:

  • Natural rubbers vulcanised with sulphur,

  • RTV 2 silicone elastomers catalysed with metal salts, e.g. tin-compounds,

  • PVC stabilised with tin salts and additives,

  • Epoxy resins catalysed with amines.

In case of doubts, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.

SILBIONE RT GEL 4220 A may be stored at a temperature between -10 °C/ 14 °F and 30 °C/ 86 °F for up to 12 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.Healthcare Class I;Skin Contact

SILBIONE RT GEL 4220 A

SILBIONE RT Gel 4220 A&B is a two component silicone elastomer which cures at room temperature by a polyaddition reaction. The polymerisation can be accelerated by heat.

The silicone material is delivered as two low viscous liquid components, which once mixed and cured, transform into an elastic and resistant elastomer. Polymerisation occurs without formation of heat.

Bio-compatibility

2 Part RTV

Fluid

Healthcare Class I;Skin Contact

  • Excellent shock absorption
  • Very good pressure dissipation
  • Good adhesion on PU films
  • External breast prostheses
  • Cushioning elements
  • Mattresses

 

Asia Pacific;Europe Middle East Africa;Central and South America;North America

 Characteristics_A

 

 

Viscosity1025PairedCompISO 2555mPa.s
ColorTransparentPairedCompEuropean Pharmacopea

 Characteristics_B

 

 

Viscosity1150PairedCompISO 2555mPa.s
ColorTransparentPairedCompEuropean Pharmacopea

 

 

 Table_Characteristics_A_And_B

 

 

penetration_a142c699-2b17-4f82-882a-75f6253332edpenetration_a142c699-2b17-4f82-882a-75f6253332edPenetration190PairedMixISO 21371/10mm
pot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6apot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6aPot life50PairedMixmin

 

 

 

 

SILBIONE RT GEL 4220 BSILBIONE RT GEL 4220 B/our_offer/Product/90038074/90038073/SILBIONE-RT-GEL-4220-B

 

 

 

 

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Orthotics & Prostheticshttps://silicones.elkem.com/EN/Our_offer/KEC/Pages/Brochures/OrthoticsProsthetics.aspxOrthotics & Prosthetics

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