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BLUESIL RTV 3221 without catalyst
BLUESIL® RTV 3221 (known as RTV 573) – Soft-elastic silicone rubber for durable negative molds and fine structures
2K-Sn silicone (polycondensation) for highly elastic molds — lost-wax casting process, fashion jewelry, art and special effects
Documents
HS Code:
39100000
Mold-making silicone for highly flexible molds in art, decoration, and model making. Cures at room temperature after the addition of a catalyst. Catalyst sold separately.
BLUESIL RTV 3221 is a silicone elastomer that cures to a flexible, elastic material at room temperature after the addition of a catalyst. It is designed for highly flexible molds with good demoldability. Two catalysts are available: BLUESIL CATA 24H (standard, 24-hour demolding time) and BLUESIL CATA 6H (fast, 6-hour demolding time). This item is supplied without a catalyst; the appropriate catalyst must be purchased separately.
This position is the base without catalyst. For processing, BLUESIL CATA 24H (standard) or BLUESIL CATA 6H (fast) is required, 5 parts of each to 100 parts of base.
What makes the RTV 3221 stand out
What is the RTV 3221 used for?
Processing
Important Notes
- Processing and curing properties are dependent on temperature and humidity. Higher temperatures or humidity shorten the pot life, lower temperatures lengthen it. Do not process below 20 °C.
- Store in the unopened original container at -5 °C to +30 °C for up to 12 months from the date of manufacture. Reseal opened containers.
- The currently valid Elkem data sheet (TDS and SDS) is authoritative, which we will be happy to send you.
Technical data for BLUESIL RTV 3221 without catalyst
| Product Information | |
|---|---|
| Manufacturer | Elkem Silicones |
| Curing type | Condensation (tin) |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Brand | Bluesil |
| Container | 1 kg, 5 kg, 20 kg, 25 kg, 200 kg |
| Mixing Ratio | 100:5 |
| Further Properties | |
|---|---|
| UV resistance | No |
| Physical Properties | |
|---|---|
| Cured Color | Beige |
| Self-leveling | Yes |
| Density (g/cm³) | 1.3 |
| Uncrosslinked viscosity (mPa·s) | 15 |
| Electrical Properties | |
|---|---|
| Electrical Insulation | No |
| Curing values | |
|---|---|
| Pot life (min) | 30 |
| Demolding time (min) | 24 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 1.6 |
| Elongation at break (%) | 230 |
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
Frequently asked questions about RTV 3221
Practical application and design questions, answered by SILITECH.
No. This is the base without catalyst. BLUESIL CATA 24H or CATA 6H must be obtained separately; dosage is 5 parts to 100 parts base.
CATA 24H is the standard catalyst with a 24-hour demolding time, while CATA 6H cures faster with a 6-hour demolding time. According to TDS, both are odorless.
For highly flexible shapes in art, decoration, film and TV effects, wax and figure casting, as well as crafts and construction.
Approximately 18 Shore A with CATA 24H or 17 Shore A with CATA 6H after 24 hours at 23 °C.
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Product Specifications
| Product Information | |
|---|---|
| Container | 1 kg or 5 kg or 20 kg or 25 kg or 200 kg |
| Manufacturer | Elkem Silicones |
| Curing type | Condensation (tin) |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Brand | Bluesil |
| Mixing Ratio | 100:5 |
| Further Properties | |
|---|---|
| UV resistance | No |
| Physical Properties | |
|---|---|
| Cured Color | Beige |
| Self-leveling | Yes |
| Density (g/cm³) | 1.3 |
| Uncrosslinked viscosity (mPa·s) | 15 |
| Electrical Properties | |
|---|---|
| Electrical Insulation | No |
| Curing values | |
|---|---|
| Pot life (min) | 30 |
| Demolding time (min) | 24 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 1.6 |
| Elongation at break (%) | 230 |
| Keywords | |
|---|---|
| Keywords | |
| Mechanical properties | |
|---|---|
| Shore hardness A | 18.0 Shore A |
| Tensile Strength | 1.6 MPa |
| Elongation at break | 235.0 % |
| Linear shrinkage | < 1.2 % |
| Processing | |
|---|---|
| Viscosity Comp. A | 15’000 mPa·s |
| Pot life at 23°C | 30.0 min |
| Demolding time | 1440.0 min |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.3 g/cm³ |
| Temperature Resistance (Continuous) | -50 to 200 °C |
| Peak Temperature (Short-term) | 250 °C |
| Storage | |
|---|---|
| Shelf life in original packaging | 12 months |
| Storage Temperature | -5 to 30 °C |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download:
- Bluesil RTV 3221 without catalyst - Technical Data Sheet FR.pdf (169 KB)
- Bluesil RTV 3221 without catalyst - Fiche de Sécurité FR.pdf (43 KB)
- Bluesil RTV 3221 without catalyst - Safety Data Sheet EN.pdf (40 KB)
- Bluesil RTV 3221 without catalyst - Safety Data Sheet DE.pdf (42 KB)
- Bluesil RTV 3221 without catalyst - Technical Data Sheet EN.pdf (144 KB)
- Bluesil RTV 3221 without catalyst - Technical data sheet DE.pdf (155 KB)