SILPURAN® 4200

1 of 52 products in this brand
SILPURAN® 4200 is a non-slump, self-leveling silicone rubber formulation that cures at room temperature under the influence of atmospheric moisture to a silicone elastomer exhibiting good mechanical properties. SILPURAN® 4200 is designed for medical applications in compliance with Wacker Silicones' health care policy.

Product Type: 1K (1 component) Adhesive

Application Area: Medical Devices, Prosthetics

Compatible Substrates & Surfaces: Ceramic, Glass, Metal, Plastics

Cure Method: Air Dry, Moisture Cure

Application Method: Air Knife Coating, Roller

Chemical Family: Silicones

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Specific Features
  • 1-component system
  • Condensation-curing
  • Food-contact

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Applications

Medical Devices

Application Details

One-component silicone adhesive, in particular for medical applications.

  • The following studies were performed on vulcanizates of SILPURAN® 4200 according to ISO 10993:
    • Hemocombatibility (Hemolysis and Thrombogenicity) (ISO 10993-4)
    • Cytotoxicity (ISO 10993-5)
    • Sensitation (ISO 10993-10)
    • Pyrogenicity (ISO 10993-11)
  • The following studies were performed on vulcanizates of SILPURAN® 4200 according to USP class VI:
    • Acute systemic toxicity
    • Intracutaneous toxicity
    • Implantation test
  • No adverse effects have been detected at any of the studies performed.
  • Properly cured vulcanizates of SILPURAN® 4200 can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR as well as FDA 21 CFR § 175.300 "Resinous and polymeric coatings" and FDA 21 CFR §177.2600 "Rubber articles intended for repeated use" considering any given limitations on extractable and volatile substances.


Processing 

  • SILPURAN® 4200 is a ready-to-use, one-part silicone rubber which starts curing when exposed to air moisture.
    • Skin-forming time at 23 °C, 50 % RH: 5 - 10 min
    • Curing time at 23 °C, 50 % RH: 12 h/mm
  • As RTV-1 silicones require humidity for curing, free access of air moisture to the silicone rubber is essential. The vulcanization time of SILPURAN® 4200 can be greatly reduced by increasing the level of air's relative humidity.
  • Please note that, unlike the initial skin formation, the total curing rate of RTV-1 silicones is limited by moisture's diffusion speed in the silicone rubber. Since increasing the curing temperature has just a minor effect on both, the skin forming time as well as the curing speed, SILPURAN® 4200 is typically vulcanized at room temperature.
  • Heat curing is recommended only for applications where the silicone rubber is applied as a thin film (thickness less than 0.5 mm), because otherwise blistering is likely to occur due to the quick release of acetic acid.
  • Detailed information about the processing of RTV-1 silicones is given in our brochure “ROOM TEMPERATURE VULCANIZING (RTV) SILICONES - MATERIAL AND PROCESSING GUIDELINES”. We recommend preliminary tests to optimize conditions for the particular application.
  • Removal: If removal of the silicone from machines or dispensing equipment is necessary, white spirit or similar nonpolar solvents are recommended. However, cleaning ideally should take place before the silicone rubber is fully vulcanized. Cured silicone needs to be rubbed off or removed mechanically, if necessary in combination with a swelling agent (solvent) or a chemical silicone remover.

Properties

Cured Properties
ValueUnitsTest Method / Conditions
Density (in water, at 23°C)1.1g/cm³DIN EN ISO 1183-1 / ISO 2781
Elongation (at break)300%DIN 53504 S1 / ISO 37
Shore Hardness A35DIN 53 505 / ISO 868
Tensile Strength5.5N/mm²DIN 53504 S1 / ISO 37
Uncured Properties
ValueUnitsTest Method / Conditions
Dynamic Viscosity (at 23°C, Shear rate 0.5 s⁻¹)250000mPa·sDIN EN ISO 3219
Properties

SILPURAN® 4200 meets selected test requirements of ISO 10993 and United States Pharmacopeia (USP) Class VI. It usually exhibits good primerless adhesion to many substrates, e.g. glass, ceramics, metals, plastics and powder coatings. The recommended service temperature range is approx. -50 °C to +180 °C.

Note

Curing conditions: 2 mm thickness, 14 days storage at 23 °C and 50 % RH.

Regulatory & Compliance

Safety & Health

Safety Notes
  • During vulcanization of SILPURAN® 4200, a total of about 3.5 % by weight of acetic acid is split off. These vapors should not be inhaled for long periods or in high concentration. Work areas should therefore be well ventilated.
  • Contact of unvulcanized silicone rubber with eyes and mucous membranes must be avoided as this would cause irritation. However if it does happen, rinse the affected area thoroughly with water.

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania
Packaging Information

SILPURAN® 4200 is available in 20 mL tubes, 310 mL cartridges and 22 kg pail kits. SILPURAN® is neither produced nor packed under sterile conditions, so the final product has to be sterilized prior to use, if necessary.

Storage & Handling

Storage Information

Store cartridges in a dry and cool place. For storage, a minimum temperature of approx. 5 °C is recommended, temperatures below 0 °C have to be avoided.