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  1. All Products
  2. SILISIL RTV PC-Putty 30 BASE
SILISIL RTV PC-Putty 30 BASE

SILISIL RTV PC-Putty 30 BASE

https://www.silitech.ch/web/image/product.template/3589/image_1920?unique=a1efbf2

Base component of a condensation-curing RTV-2 silicone putty; processing with Slow CATALYST (base : catalyst = 1:0.04) or Fast CATALYST (1:0.02), weigh precisely; for impressions on vertical surfaces,
Shore A 30 (Slow) or 28 (Fast) after 24 h; pot life 90 min (Slow) or 2 min (Fast) at 23 °C

2K silicone Shore A 30 (light yellow, mixing ratio 1:1) — basic component for direct impressions without risk of poisoning.

Price on request

  • Brand
  • Curing type
  • Cured Color
  • Self-leveling
  • Density (g/cm³)
  • Electrical Insulation
  • Pot life (min)
  • Demolding time (min)
  • Full cure (h)
  • Food contact
  • Medical grade
  • Certificates
  • Shore hardness A (cured)
  • Tensile strength (MPa)
  • Elongation at break (%)
  • Tear strength (N/mm)
  • Container

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SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronic Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast Putty / Kneadable 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-Putty 30 BASE
SILISIL RTV PC-Putty 30 BASE
SILISIL ·

SILISIL RTV PC-Putty 30 BASE is a room temperature vulcanizing 2-component silicone of the PC — Polycondensationseries (Polycondensation (tin catalyst), kneadable, RTV-2) — Kneadable polycondensation putty (Shore A 30) — Base component for direct impressions without risk of poisoning.

The mixture is prepared in a 1:1 ratio by weight . Pot life at 23 °C is approximately 2 minutes (Fast) / 90 minutes (Slow). Demolding is possible after approximately 15 minutes (Fast) / 18-22 hours (Slow). Full curing occurs after 24 hours. Temperature resistant from -40 °C to +200 °C.

Key property

Polycondensation putty — basic component for direct hand impressions without risk of poisoning. Available as a fast (pot life 2 min) or slow (90 min) variant by combining it with Fast or Slow CATALYST.

SILISIL RTV PC-Putty 30 BASE in figures
A 30
Shore Hardness
modeling clay
Consistency
2 (Fast) / 90 (Slow) min
Pot life @23 °C
177–200 %
Elongation at break

What distinguishes SILISIL RTV PC-Putty 30 BASE

Malleable like modeling clay — no container
Direct hand processing without container, mixer or vacuum chamber — the fastest way to the shape.
Polycondensation — resistant to inhibitors
The condensation system does not react to sulfur, amine and PVC inhibitors — certainly not even to problematic originals.
Choice of Fast or Slow CATALYST
Choice of fast or slow catalyst — pot life flexibly selectable from 2 min to 90 min.
Cooking time: 2 minutes (Fast) to 90 minutes (Slow)
Very short processing time — suitable for high-throughput production with short mold cycles.
Mixing ratio 1:1 by weight
Simple 1:1 ratio — hand-mixable without a precision scale, ideal for workshops and hobbyists.
Dimensional change <0.57%
Minimal dimensional change — precise reproduction even after several days of storage.

What is SILISIL RTV PC-Putty 30 BASE used for?

Direct impressions without tools
Knead by hand and press directly onto the model — mold ready in 15 minutes (Fast-CAT) or 18-22 hours (Slow-CAT).
Repair and correction
Fill and repair damaged model areas — no tools or preforms required.
Restoration of delicate originals
Polycondensation is not sensitive to sulfur, latex and other inhibitors — safe for historical pieces.
Fast Detail Replicas (Fast-CAT)
With the Fast-CAT catalyst: pot life 2 minutes, finished form after 15 minutes.
Complex multi-part molds (Slow-CAT)
With the Slow-CAT catalyst: pot life 90 minutes, time for clean multi-part assembly.
Jewelry and goldsmithing applications
Direct impression on the workpiece without disassembly — goldsmiths with condensation system.

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
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 15 minutes (Fast) / 18-22 hours (Slow), complete 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

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
500 g, 1 kg, 5 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 RTV PC Putty 30 Fast CATALYST
Rapid catalyst (pot life 2 min, setting time 15 min) — combined with BASE for urgent direct impressions.
To the product →
SILISIL RTV PC-Putty 30 Slow CATALYST
Slow catalyst (pot life 90 min) — combined with BASE for complex multi-part structures.
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-Putty 30 BASE in direct comparison with related products in our range (PC — Polycondensation).

PC-Putty 30 BASE
Current Product		 PC-Putty 30 Fast Catalyst →PC-Putty 30 Slow Catalyst →PC-Dura 30 →
Shore hardness A30283030
Mixed viscosity(Play-Doh)(Play-Doh)(Play-Doh)60'000
ColorLight YellowLight RedLight YellowWhite
Pot life @23 °C2 (Fast) / 90 (Slow)29060
Mixing ratio1:11:11:1100:5
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronics Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast Putty / Kneadable LED / Optoelectronics Assortment Review 2026

Technical specifications for SILISIL RTV PC-Putty 30 BASE

All 17 product information 3 Physical properties 3 Electrical properties 1 Curing values ​​3 Product approvals 3 Mechanical properties 4
Product Information
Brand SILISIL
Curing type Addition (Platinum)
Container 1 kg, 5 kg, 25 kg
Physical Properties
Cured Color Light Yellow
Self-leveling Thixotropic
Density (g/cm³) 0.95
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 90
Demolding time (min) 18
Full cure (h) 24
Product Approvals
Food contact No
Medical grade No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 30
Tensile strength (MPa) 0.9
Elongation at break (%) 200
Tear strength (N/mm) 3.6

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-Putty 30 BASE - Technical Data Sheet DE.pdf
157 KB
SILISIL RTV PC-Putty 30 BASE - Technical Data Sheet EN.pdf
162 KB
SILISIL RTV PC-Putty 30 BASE - Fiche Technique FR.pdf
166 KB

Frequently asked questions about SILISIL RTV PC-Putty 30 BASE

Practical application and design questions — answered by SILITECH.

SILISIL RTV PC-Putty 30 BASE is a 2-component silicone from the PC polycondensation series (Shore A 30, light yellow). Kneadable polycondensation putty (Shore A 30) – base component for direct impressions without risk of poisoning – suitable for tool-free direct impressions and related applications.

At 23 °C, the pot life is approximately 2 (Fast) / 90 (Slow) minutes and the demolding time is approximately 15 minutes (Fast) / 18-22 hours (Slow). Complete curing occurs after 24 hours.

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

SILISIL RTV PC-Putty 30 BASE 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 PC-Putty 30 BASE achieves a Shore A hardness of 30 (ASTM D 2240), a tensile strength of 0.9–1.2 N/mm² (ASTM D 412), an elongation at break of approximately 177–200 % and a tensile strength of 3.3–4.7 N/mm (ASTM D 624).

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Product Specifications

Product Information
Container 1 kg or 5 kg or 25 kg
Brand SILISIL
Curing type Addition (Platinum)
Physical Properties
Cured Color Light Yellow
Self-leveling Thixotropic
Density (g/cm³) 0.95
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 90
Demolding time (min) 18
Full cure (h) 24
Product Approvals
Certificates RoHS or REACH
Food contact No
Medical grade No
Mechanical properties
Shore hardness A (cured) A 30
Tensile strength (MPa) 0.9
Elongation at break (%) 200
Tear strength (N/mm) 3.6
Keywords
Keywords
SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Electronic Encapsulation Shore A 30 Swiss Brand 2K Platinum Cast Putty / Kneadable LED / Optoelectronics

Documents and data sheets

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