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SILISIL RTV PC-Dura 30

SILISIL RTV PC-Dura 30

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Condensation-curing RTV-2 silicone, mixing ratio 20:1, Shore A 30. Production of series and prototype parts as well as duplicates in mold and model making, suitable for ceramic stencil printing.

2K silicone Shore A 30 (white, mixing ratio 100:5) — the robust alternative to additives for aggressive substrates.

Price on request

  • Brand
  • Mixing Ratio
  • Curing type
  • Cured Color
  • Self-leveling
  • Density (g/cm³)
  • Uncrosslinked viscosity (mPa·s)
  • Electrical Insulation
  • Pot life (min)
  • Demolding time (min)
  • Full cure (h)
  • Food contact
  • Medical grade
  • Certificates
  • Shore hardness A (cured)
  • Elongation at break (%)
  • Container

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SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronic Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast LED / Optoelectronics

 
General Terms and Conditions

Shipping usually within 1 to 3 business days
(Availability confirmed after order)

Express logistics. Fast and reliable within Switzerland & Europe

From Swiss stock Dispatch within 24h Batch certificate Invoice 30 days (B2B) Technical advice
Shipping & Delivery

Usually 1 to 3 business days

Availability is confirmed after order receipt.

Express logistics within Switzerland & Europe.

Terms and Conditions →

Product data

HS Code: 3910.0000

HS Code: 3910.0000

SILISIL RTV PC-Dura 30
SILISIL RTV PC-Dura 30
SILISIL ·

SILISIL RTV PC-Dura 30 is a room temperature vulcanizing 2-component silicone of the PC — polycondensationseries (polycondensation (tin catalyst), RTV-2) — 2K polycondensation silicone Shore A 30 — the robust addition alternative for aggressive substrates.

The mixture is prepared in a 100:5 ratio by weight . Pot life at 23 °C is approximately 60 minutes, demolding is possible after approximately 24 hours, and complete curing takes 72 hours. Temperature resistant from -40 °C to +200 °C.

Key property

Polycondensation silicone (tin catalyst) — no crosslinking inhibitors, no risk of poisoning from sulfur, amines, or PVC. The right choice for problematic substrates where addition silicones would fail.

SILISIL RTV PC-Dura 30 in figures
A 30
Shore Hardness
60'000
mPa·s viscosity
60 min
Pot life @23 °C
320 %
Elongation at break

What makes SILISIL RTV PC-Dura 30 stand out

Polycondensation system (tin) — no poisoning
The condensation system does not react to sulfur, amine and PVC inhibitors — certainly not even to problematic originals.
Shore A 30 with high tensile strength
Medium final hardness with high tear resistance — universally applicable for standard to demanding shapes.
Resistant to aggressive substrates
Robust against chemically unknown or aggressive originals.
No bleeding required
No vacuum venting required — suitable for workshops without a vacuum chamber.
Small dimensional change <1%
Minimal shrinkage — the shape remains dimensionally accurate after hardening.
Mixing ratio 100:5 by weight
Polycondensation standard with tin catalyst — small amount of catalyst allows pot life control.

What is SILISIL RTV PC-Dura 30 used for?

Substrates with crosslinking inhibitors
Sulfur-containing modeling clays, latex, PVC plasticizers, amines, some adhesive tapes — polycondensation is not sensitive to these.
Series and prototype parts
Robust permanent molds for industrial replicas, model and toolmaking with a long mold lifespan.
Ceramic stencil printing
Special mold for the ceramic screen printing process — dimensional accuracy and chemical resistance.
Concrete and cast stone replicas
Robust against alkaline concrete mixtures, paving stone and facade replicas in medium series.
Resin and polyester casting
Stable shape even with aggressive polyester and epoxy resins — for arts and crafts and industry.
Alternative for problematic originals
If the original contains sulfur, amines or other inhibitors and addition fails — PC-Dura 30 is the solution.

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 the base and catalyst thoroughly before use. Weigh out a 100:5 ratio by weight. Mix thoroughly, including the sides and bottom of the container.
3
Use without venting
Polycondensation does not require a vacuum — pour or apply directly.
4
Processing
Pour in a thin stream from a height of approximately 30 cm — minimizing air bubbles. For modeling clay, press directly onto the model.
5
Vulcanize and demold
At 23 °C, demolding is possible after approximately 24 hours, and complete hardening occurs after 72 hours.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important Notes

Polycondensation — robust against inhibitors
Polycondensation system (tin catalyst) — no susceptibility to poisoning from sulfur, amines, or PVC. Vacuum venting is not strictly necessary.
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 + 0.05 kg, 5 kg + 0.25 kg, 25 kg + 1.25 kg. Other package sizes available on request.
Compatibility
Compatible with polyurethane, epoxy, and polyester casting resins. For aggressive resins, apply a release agent.

Recommended accessories

SILISIL THIXO AGENT PC
Thickener paste for polycondensation silicones — makes pourable silicones thixotropic for vertical and overhead applications.
To the product →
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 PC-Dura 30 in direct comparison with related products in our range (PC — polycondensation).

PC-Dura 30
Current Product		 PC-Flex 20 →PC-Soft 10 →PC-Putty 30 BASE →
Shore hardness A3030?30
Mixed viscosity60'00060'000?(Play-Doh)
ColorWhiteWhite?Light Yellow
Pot life @23 °C6060?2 (Fast) / 90 (Slow)
Mixing ratio100:5100:5?1:1
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronic Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast LED / Optoelectronics

Technical data for SILISIL RTV PC-Dura 30

All 17 Product Information 4 Physical Properties 4 Electrical Properties 1 Curing Values 3 Product Approvals 3 Mechanical Properties 2
Product Information
Brand SILISIL
Mixing Ratio 100:5
Curing type Addition (Platinum)
Container 1kg, 5kg, 20kg, 25kg, 50kg, 200kg
Physical Properties
Cured Color White
Self-leveling Yes
Density (g/cm³) 1.26
Uncrosslinked viscosity (mPa·s) 60'000
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 60
Demolding time (min) 24
Full cure (h) 72
Product Approvals
Food contact No
Medical grade No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 30
Elongation at break (%) 320

Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.

Documents and data sheets

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

Technical Data Sheets (TDS) 3
SILISIL RTV PC-Dura 30 - Technical Data Sheet DE.pdf
124 KB
SILISIL RTV PC-Dura 30 - Technical Data Sheet EN.pdf
123 KB
SILISIL RTV PC-Dura 30 - Fiche Technique FR.pdf
124 KB

Frequently asked questions about SILISIL RTV PC-Dura 30

Practical application and design questions — answered by SILITECH.

SILISIL RTV PC-Dura 30 is a 2K silicone from the PC polycondensation series (Shore A 30, white). This 2K polycondensation silicone Shore A 30 is a robust alternative to addition-cure silicone for aggressive substrates and is suitable for substrates containing crosslinking inhibitors and related applications.

At 23 °C, the pot life is approximately 60 minutes and the demolding time approximately 24 hours. Complete curing occurs after 72 hours.

SILISIL RTV PC-Dura 30 is a polycondensation (tin catalyst) system. This polycondensation system (tin catalyst) is not susceptible to poisoning from sulfur, amines, or PVC. Vacuum venting is not mandatory.

SILISIL RTV PC-Dura 30 is mixed in a 100:5 ratio by weight (base to catalyst). Homogenize both components separately before mixing, then thoroughly incorporate them – including the container walls and bottom.

SILISIL RTV PC-Dura 30 achieves a Shore A hardness of 30 (ASTM D 2240), a tensile strength of >4.1 N/mm² (ASTM D 412), an elongation at break of approximately 320% and a tensile strength of 18 N/mm (ASTM D 624).

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Product Specifications

Product Information
Container 1kg or 5kg or 20kg or 25kg or 50kg or 200kg
Brand SILISIL
Mixing Ratio 100:5
Curing type Addition (Platinum)
Physical Properties
Cured Color White
Self-leveling Yes
Density (g/cm³) 1.26
Uncrosslinked viscosity (mPa·s) 60'000
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 60
Demolding time (min) 24
Full cure (h) 72
Product Approvals
Certificates RoHS or REACH
Food contact No
Medical grade No
Mechanical properties
Shore hardness A (cured) A 30
Elongation at break (%) 320
Keywords
Keywords
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronic Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast LED / Optoelectronics

Documents and data sheets

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