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  3. RTV-2 Silicones
  4. SILISIL RTV PRO-Cast 50
  5. RTV-2 Silicones
Price list: Website 0 CHF Price list
Price list: Website 0 CHF Price list
SILISIL RTV PRO-Cast 50

SILISILRTV-2 silicones

SILISIL RTV PRO-Cast 50

2K silicone Shore A 50 (grey, mixing ratio 1:1) — Premium industrial silicone Shore A 50 with antistatic properties and microresolution.

Cured Color
Grey
Self-leveling
Yes
Uncrosslinked viscosity (mPa·s)
20'000
Mixing Ratio
1:1

CHF 0.00 / pc.
  • Brand
  • Paint hardened - Grey
  • Food contact
  • Shore hardness A (cured)
  • Self-leveling
  • Medical grade
  • Uncrosslinked viscosity (mPa·s)
  • Mixing Ratio
  • Pot life (min)
  • Demolding time (min)
  • Tensile strength (MPa)
  • Elongation at break (%)
  • Tear strength (N/mm)
  • Curing type
  • Electrical Insulation
  • Certificates
  • Container
Your selection SILISIL RTV PRO-Cast 50
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Technical documentation

Technical data sheets

HS Code: 3910.0000

SILISIL RTV PRO-Cast 50 Sample Offer

Technical Data

Typical values, not a specification. The technical data sheet (TDS) is binding.

Product Information

Brand
SILISIL
Mixing Ratio
1:1
Curing type
Addition (Platinum)
Container
1kg+1kg, 5kg+5kg, 10kg+10kg, 25kg+25kg

Physical Properties

Cured Color
Grey
Self-leveling
Yes
Uncrosslinked viscosity (mPa·s)
20'000

Electrical Properties

Electrical Insulation
Yes

Curing values

Pot life (min)
15
Demolding time (min)
3

Product Approvals

Food contact
No
Medical grade
No
Certificates
RoHS, REACH

Mechanical properties

Shore hardness A (cured)
A 50
Tensile strength (MPa)
4
Elongation at break (%)
320
Tear strength (N/mm)
12
Keywords
  • SILISIL
  • Silicone
  • RTV-2
  • Swiss warehouse
  • Addition
  • Platinum
  • Prototyping
  • Shore A 50
  • Swiss brand
  • 2K
  • PRO-Cast
  • Restoration

Product Description

SILISIL RTV PRO-Cast 50 is a room temperature vulcanizing 2-component silicone from the PRO-Cast — Industrial Casting Series(Addition (Platinum), antistatic, RTV-2) — Premium industrial silicone Shore A 50 with antistatic properties and microreproduction 2 microns.

The mixture is prepared in a 1:1 ratio by weight . Pot life at 23 °C is approximately 15 minutes, demolding is possible after approximately 3 hours, and complete curing takes 24 hours. Temperature resistant from -40 °C to +200 °C.

Key property

Premium industrial silicone with detail reproduction down to 2 microns, dimensional change only −0.05%, antistatic properties and high voltage resistance >16.2 kV/mm.

SILISIL RTV PRO-Cast 50 in figures
A 50
Shore Hardness
20'000
mPa·s viscosity
15 min
Pot life @23 °C
320 %
Elongation at break

What makes SILISIL RTV PRO-Cast 50 stand out

Final hardness Shore A 50 — highest printing precision
Highest final hardness in the pad printing range — most precise printing with minimal pad deformation.
Detail reproduction down to 2 microns
Microscopic detail reproduction for highest reproduction precision — the finest writing and structures are captured.
Dimensional change only −0.05%
Virtually no shrinkage — the shape remains exactly dimensionally accurate until the first impression.
High voltage resistant >16.2 kV/mm
High electrical insulation even under high voltage — suitable for electrical engineering and insulator applications.
Antistatic — volume resistivity 6.5×10¹¹ Ω·m
Suitable for ESD-sensitive components in electronics manufacturing — controlled charge dissipation at the form contact.
Thermal conductivity 0.12 W/mK
Moderate thermal conductivity (0.12 W/mK) — suitable for applications with controlled heat dissipation.

What is SILISIL RTV PRO-Cast 50 used for?

Microreproduction with highest resolution
2-micron detail for microelectronic components, sensors and semiconductor replicas in high-precision industries.
Industrial high-precision tool molds
Minimal dimensional change (−0.05%) for tool shapes with highest repeatability.
ESD-sensitive component shapes
Antistatic silicone for semiconductor, sensor and microelectronics manufacturing — controlled charge dissipation.
High-voltage insulation
Dielectric strength >16.2 kV/mm for mold applications with high-voltage components and insulators.
Toolmaking to the highest standards
Premium choice for the most demanding tool master models in industrial and toolmaking.
Thermal management and electronics manufacturing
Industrial molds with moderate heat dissipation — housing and potting molds for PCB manufacturers and EMS providers.

Processing

1
Prepare the original
Clean, dry, and dust-free surface at 23 °C — cooler environments significantly extend pot life and curing time.
2
Mix components
Stir base and catalyst thoroughly before use. Weigh out 1:1 by weight. Mix in thoroughly, including container walls and bottom.
3
Vacuum degassing
Briefly degas under vacuum for a pore-free mold — entrapped air is removed and a smooth mold surface is guaranteed.
4
Processing
Pour in a thin stream from approx. 30 cm height — minimal air entrapment.
5
Vulcanize and demold
At 23 °C, demolding is possible after approximately 3 hours, with complete hardening after 24 hours.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important Notes

Avoid crosslinking inhibitors
Addition system (platinum) — sensitive to sulfur, amine, tin, and phosphorus compounds. Avoid contact with latex gloves and PVC plasticizers.
Storage and Shelf Life
Shelf life of at least 12 months in unopened original container when stored in a dry, cool place (10–25 °C). Consult the SDS before opening.
Available containers
1 kg + 1 kg, 5 kg + 5 kg. Other container sizes available on request.
Compatibility
Compatible with polyurethane, epoxy, and polyester casting resins. For aggressive resins, apply a release agent.

Recommended accessories

SILISIL white petroleum jelly release paste
Universal release agent for polyester, epoxy, and polyurethane casts — protects the silicone mold from aggressive resins and extends mold service life.
To the product →
SILISIL Silicone Remover
Cleaning agent for silicone residues on tools, models, and work surfaces — gentle and effective.
To the product →

Which silicone for which application?

SILISIL RTV PRO-Cast 50 in direct comparison with related products in our range (PRO-Cast — Industrial Casting Series).

PRO-Cast 50
Current Product		 PRO-Cast 45 →PRO-Cast 33RD →PRO-Cast 33 TL →
Shore hardness A50453333
Mixed viscosity20'0008'0007'5007'500
ColorGreyTranslucentRedTranslucent
Pot life @23 °C15122020
Mixing ratio1:11:11:11:1

Frequently asked questions about SILISIL RTV PRO-Cast 50

Practical application and design questions — answered by SILITECH.

SILISIL RTV PRO-Cast 50 is a 2K silicone from the PRO-Cast industrial casting series (Shore A 50, gray). This premium industrial silicone (Shore A 50) features antistatic properties and microreproduction capabilities down to 2 microns, making it suitable for high-resolution microreproduction and related applications.

At 23 °C, the pot life is approximately 15 minutes and the demolding time approximately 3 hours. Complete curing takes 24 hours.

SILISIL RTV PRO-Cast 50 is an addition (platinum) antistatic system. This addition system (platinum) is sensitive to sulfur, amine, tin, and phosphorus compounds. Avoid contact with latex gloves and PVC plasticizers.

SILISIL RTV PRO-Cast 50 is mixed in a 1:1 ratio by weight (base to catalyst). Homogenize both components separately before mixing, then thoroughly incorporate them – including the container walls and bottom.

SILISIL RTV PRO-Cast 50 achieves a Shore A hardness of 50 (ASTM D 2240), a tensile strength of 4.0 N/mm² (ASTM D 412), an elongation at break of approximately 320% and a tensile strength of 12 N/mm (ASTM D 624).