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SILISIL RTV PRO-Cast 33RD

SILISIL RTV PRO-Cast 33RD

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SILISIL RTV PRO-Cast 33RD — Shore A 33, Red, Mixing ratio 1:1, from Swiss warehouse.

2K silicone Shore A 33 (red, mixing ratio 1:1) — higher tear strength for highly stressed industrial molds.

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  • Networking type
  • Paint has hardened
  • Self-leveling
  • Electrical insulation
  • Food contact
  • Suitable for medical use
  • Certificates
  • Shore hardness A (cured)
  • Container

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SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Prototyping Swiss Brand 2K PRO-Cast Restoration Shore A 33

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

HS code: 3910.0000

HS code: 3910.0000

SILISIL RTV PRO-Cast 33RD
SILISIL RTV PRO-Cast 33RD
SILISIL ·

SILISIL RTV PRO-Cast 33RD is a room temperature vulcanizing 2-component silicone from the PRO-Cast — Industrial Casting Series(Addition (Platinum), RTV-2) — Red Premium Casting Silicone Shore A 33 — higher tear strength for heavy-duty industrial molds.

The mixture is prepared in a 1:1 ratio by weight . Pot life at 23 °C is approximately 20 minutes, demolding is possible after approximately 210 minutes, and complete curing takes 24 hours. Temperature resistant from -40 °C to +200 °C.

Key feature

The red high-performance variant of the PRO-Cast 33 series — with a tensile strength of >6.0 N/mm² and a tear resistance of 20 N/mm, RD is the more robust choice for mechanically stressed molds.

SILISIL RTV PRO-Cast 33RD in figures
A 33
Shore hardness
7'500
mPa·s viscosity
20 min
Pot life @23 °C
460 %
Elongation at break

What makes SILISIL RTV PRO-Cast 33RD stand out

Very high tensile strength >6.0 N/mm²
High tear resistance — robust against mechanical stress during demolding.
Tear resistance 20 N/mm — very high
Very high tear resistance — the mold withstands hundreds of cycles with abrasive materials without wear.
High elongation at break 460%
High elasticity — safe demolding of complex geometries without damage to the mold or the original.
High mechanical strength
High mechanical strength — robust shape with constant properties under load.
Mixing ratio 1:1 by weight
Simple 1:1 ratio — mixable by hand without precision scales, ideal for workshops and hobbyists.
Very good dimensional and aging stability

What is SILISIL RTV PRO-Cast 33RD used for?

Heavy-duty industrial casts
Polyurethane, epoxy and polyester casts in medium series — the high tear resistance significantly extends the mold lifespan.
Concrete and stone reproductions
Architectural elements, paving stones and stone facades in medium series with high form retention.
Industrial tool molds
Tool master models for injection molding, vacuum forming and series production systems.
Jewelry and investment casting series
Lost-wax molds for jewelry manufacturers with high throughput and consistent detail accuracy.
Art replicas and sculptures
High-quality art reproductions with very long shape retention, even with abrasive materials.
Resin and acrylic resin casting
Designer studios with frequent mold changes — the robust mold survives numerous castings.

processing

1
Prepare the original
Clean, dry and dust-free surface at 23 °C — cooler environments significantly extend pot life and curing time.
2
Mixing components
Stir the base and catalyst thoroughly before use. Weigh out 1:1 by weight. Mix thoroughly, including the sides and bottom of the container.
3
Vacuum venting
For a pore-free mold, briefly vent under vacuum — trapped air is removed and a smooth mold surface is guaranteed.
4
Process
Pour from a height of approximately 30 cm in a thin stream — minimal air inclusions.
5
Vulcanizing and demolding
At 23 °C, demolding is possible after approximately 210 minutes, with complete hardening after 24 hours.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important instructions

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
In its unopened original container, the product has a shelf life of at least 12 months when stored in a dry, cool place (10–25 °C). Consult the SDS before opening.
Available packaging
1 kg + 1 kg, 5 kg + 5 kg, 25 kg + 25 kg, 200 kg + 200 kg. Other container sizes available on request.
compatibility
Compatible with polyurethane, epoxy, and polyester casting resins. Apply a release agent to aggressive resins.

Recommended accessories

SILISIL Vaseline release paste white
Universal release agent for polyester, epoxy and polyurethane casts — protects the silicone mold from aggressive resins and extends the mold's lifespan.
View product →
SILISIL Silicone Remover
Cleaning agent for silicone residues on tools, models and work surfaces — gentle and effective.
View product →

Which silicone for which application?

SILISIL RTV PRO-Cast 33RD in direct comparison with related products in our range (PRO-Cast — Industrial Casting Series).

PRO-Cast 33RD
Current product		 PRO-Cast 33 TL →PRO-Cast 45 →PRO-Cast 50 →
Shore hardness A33334550
Mixed viscosity7'5007'5008'00020'000
ColorRedTranslucentTranslucentGray
Pot life @23 °C20201215
Mixing ratio1:11:11:11:1
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Prototyping Swiss Brand 2K PRO-Cast Restoration Shore A 33

Technical data for SILISIL RTV PRO-Cast 33RD

All 10 product information 3 Physical properties 2 Electrical properties 1 Product approvals 3 Mechanical properties 1
Product information
brand SILISIL
Networking type Addition (Platinum)
Container 1kg + 1kg, 5kg + 5kg, 10kg + 10kg, 25kg + 25kg
Physical properties
Paint has hardened Red
Self-leveling Yes
Electrical properties
Electrical insulation Yes
Product approvals
Food contact No
Suitable for medical use No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 33

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

Click on a document for a preview or the download icon for a direct download.

Technical Data Sheets (TDS) 3
SILISIL RTV PRO-Cast 33RD - Technical Data Sheet DE.pdf
124 KB
SILISIL RTV PRO-Cast 33RD - Technical Data Sheet EN.pdf
123 KB
SILISIL RTV PRO-Cast 33RD - Fiche Technique FR.pdf
125 KB

Frequently asked questions about SILISIL RTV PRO-Cast 33RD

Practical application and design questions — answered by SILITECH.

SILISIL RTV PRO-Cast 33RD is a 2K silicone from the PRO-Cast industrial casting series (Shore A 33, red). This premium red casting silicone (Shore A 33) offers higher tensile strength for demanding industrial molds and is suitable for heavy-duty industrial castings and related applications.

At 23 °C, the pot life is approximately 20 minutes and the demolding time approximately 210 minutes. Complete curing takes 24 hours.

SILISIL RTV PRO-Cast 33RD is an addition (platinum) system. Addition system (platinum) — sensitive to sulfur, amine, tin, and phosphorus compounds. Avoid contact with latex gloves and PVC plasticizers.

SILISIL RTV PRO-Cast 33RD 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 33RD achieves a Shore A hardness of 33 (ASTM D 2240), a tensile strength of >6.0 N/mm² (ASTM D 412), an elongation at break of approximately 460% and a tensile strength of 20 N/mm (ASTM D 624).

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Product specifications

Product information
Container 1kg + 1kg or 5kg + 5kg or 10kg + 10kg or 25kg + 25kg
brand SILISIL
Networking type Addition (Platinum)
Physical properties
Paint has hardened Red
Self-leveling Yes
Electrical properties
Electrical insulation Yes
Product approvals
Certificates RoHS or REACH
Food contact No
Suitable for medical use No
Mechanical properties
Shore hardness A (cured) A 33
Keywords
Keywords
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Prototyping Swiss Brand 2K PRO-Cast Restoration Shore A 33

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: