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  4. SILISIL RTV PRO-Cast 33 TL
  5. RTV-2 Silicones
Price list: Website 0 CHF Price list
Price list: Website 0 CHF Price list
SILISIL RTV PRO-Cast 33 TL

SILISILRTV-2 silicones

SILISIL RTV PRO-Cast 33 TL

2K silicone Shore A 33 (translucent, mixing ratio 1:1) — Translucent premium casting silicone Shore A 33 for visual process control.

Cured Color
Translucent
Self-leveling
Yes
Density (g/cm³)
1.09
Uncrosslinked viscosity (mPa·s)
7500

CHF 0.00 / pc.
  • Brand
  • Color cured - Translucent
  • Food contact
  • Shore hardness A (cured)
  • Self-leveling
  • Medical grade
  • Density (g/cm³)
  • Uncrosslinked viscosity (mPa·s)
  • Mixing Ratio
  • Pot life (min)
  • Demolding time (min)
  • Full cure (h)
  • Elongation at break (%)
  • Curing type
  • Electrical Insulation
  • Certificates
  • Container
Your selection SILISIL RTV PRO-Cast 33 TL
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Technical documentation

Technical data sheets

HS Code: 3910.0000

SILISIL RTV PRO-Cast 33 TL 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
Translucent
Self-leveling
Yes
Density (g/cm³)
1.09
Uncrosslinked viscosity (mPa·s)
7500

Electrical Properties

Electrical Insulation
Yes

Curing values

Pot life (min)
20
Demolding time (min)
210
Full cure (h)
24

Product Approvals

Food contact
No
Medical grade
No
Certificates
RoHS, REACH

Mechanical properties

Shore hardness A (cured)
A 33
Elongation at break (%)
430
Keywords
  • SILISIL
  • Silicone
  • RTV-2
  • Swiss warehouse
  • Addition
  • Platinum
  • Prototyping
  • Swiss brand
  • 2K
  • PRO-Cast
  • Translucent
  • Restoration
  • Shore A 33

Product Description

SILISIL RTV PRO-Cast 33 TL is a room temperature vulcanizing 2-component silicone from the PRO-Cast — Industrial Casting Series(Addition (Platinum), translucent, RTV-2) — Translucent premium casting silicone Shore A 33 for visual process control.

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

Key property

Translucent premium casting silicone with visual process control — air inclusions and mold filling visible, very high tensile strength (tear resistance 18 N/mm) and elongation at break 430 %.

SILISIL RTV PRO-Cast 33 TL in figures
A 33
Shore Hardness
7'500
mPa·s viscosity
20 min
Pot life @23 °C
430 %
Elongation at break

What makes SILISIL RTV PRO-Cast 33 TL stand out

Translucent for visual inspection
Air inclusions, mold filling, and the embedded original are visible during processing and demolding.
High tensile strength >4.7 N/mm²
High tear strength — robust against mechanical stress during demolding.
Tear resistance 18 N/mm
High tear resistance — robust against mechanical stress when demolding abrasive materials.
High elongation at break 430%
High elasticity — reliable demolding of complex geometries without damaging the mold or the original.
Mixing ratio 1:1 by weight
Simple 1:1 ratio — hand-mixable without a precision scale, ideal for workshops and hobbyists.
Good resistance to PU and acrylic resins

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

Jewelry and investment casting molds
Lost-wax casting process for goldsmiths with visual shape control — air inclusions and wax filling visible at all times.
Prototyping and model making forms
Industrial design and design studio replicas with a translucent shape for quality control during initial casting.
Art and craft castings
Artist studios and manufacturers with the highest standards of detail — fonts, microstructures and sharp edges rendered true to life.
Resin and acrylic resin casting
Polyurethane, epoxy and acrylic casting in designer studios — good resistance to aggressive resins with release agent.
Collector and special edition replicas
High-quality small-batch reproductions with translucency for multi-color casting and layer visual inspection.
Visual teaching models
Anatomical and didactic teaching models in which the internal structure of the form should remain visible.

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 approx. 210 minutes, with full curing 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, 25 kg + 25 kg, 200 kg + 200 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 33 TL in direct comparison with related products in our range (PRO-Cast — Industrial Casting Series).

PRO-Cast 33 TL
Current Product		 PRO-Cast 33RD →PRO-Cast 45 →PRO-Cast 50 →
Shore hardness A33334550
Mixed viscosity7'5007'5008'00020'000
ColorTranslucentRedTranslucentGrey
Pot life @23 °C20201215
Mixing ratio1:11:11:11:1

Frequently asked questions about SILISIL RTV PRO-Cast 33 TL

Practical application and design questions — answered by SILITECH.

SILISIL RTV PRO-Cast 33 TL is a 2K silicone from the PRO-Cast industrial casting series (Shore A 33, translucent). This translucent premium casting silicone (Shore A 33) allows for visual process control and is suitable for jewelry and investment casting molds and related applications.

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

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

SILISIL RTV PRO-Cast 33 TL 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 33 TL achieves a Shore A hardness of 33 (ASTM D 2240), a tensile strength of >4.7 N/mm² (ASTM D 412), an elongation at break of approximately 430 % and a tensile strength of 18 N/mm (ASTM D 624).