ELASTOSIL® RT 772
- Chemical Family
- Silicones
ELASTOSIL® RT 772 is a flowable, condensation-curing RTV-2 silicone used for potting and coating applications. When used with a curing agent from the WACKER® Catalyst T 77 series, it forms a self-bonding and durable silicone rubber. Cured ELASTOSIL® RT 772 offers excellent long-term stability against weathering, moisture, and UV light. The silicone elastomer can endure constantly changing climatic conditions, UV radiation, and temperatures as high as 230°C (446°F) without damage.
Product families
- Encapsulants
Other characteristics
- Brand
- ELASTOSIL® RT
- Cure Method
- Air Dry, Moisture Cure
- Product Type
2K (2 component) Sealant, Encapsulant, Potting Compound; 2K (2 component) Sealant; Encapsulant; Potting Compound
- Application Area
- White Goods
- Note
Cured with WACKER Catalyst T 77 or WACKER Catalyst T 77 PLUS, mixing ratio 10:1 (by weight). Curing Conditions: 14 days at 23 °C and 50 % rel. humidity, 2 mm sheet, no post-curing for cured properties.
- Markets
- Automotive & Transportation
- Consumer Goods
- Electrical & Electronics
- Cure
- Air Dry
- Moisture Cure
- Safety Note
While curing ELASTOSIL® RT 772 releases a total of approx. 1.5 - 2 wt.% alcohol. These vapors should not be inhaled for long periods or in high concentrations. Hence ventilation of the work place is recommended.
- Flame Rating
- UL 94 HB
- Technology
- Ready-to-Use Products
- Labeling Claims
- Animal Products-free
- BSE-free
- TSE-free
- Special Features
- Condensation-curing
- Electrically insulating
- Heat resistant
- Low viscosity
- Self-adhesive
- Steam resistant
- Two-component
- UV & weathering-resistant
- Quality Standards
- BS EN 71:2016 Safety of Toys Standard
Technical data
Table 1 of 4
1 row| Characteristic | Value | Unit |
|---|---|---|
| Recommended Service Temperature | -50 to +230 | °C |
Table 2 of 4
16 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Pot Life (Mixed with WACKER Catalyst T 77, 10:1, at 23°C) | 10 - 15 | minutes | DIN EN ISO 3219 |
| Pot Life (Mixed with WACKER Catalyst T 77 PLUS, 10:1, at 23°C) | 5 - 8 | minutes | DIN EN ISO 3219 |
| Pot Life (Mixed with WACKER Catalyst T 77, 12:1, at 23°C) | 15 - 20 | minutes | DIN EN ISO 3219 |
| Pot Life (Mixed with WACKER Catalyst T 77 PLUS, 12:1, at 23°C) | 8 - 10 | minutes | DIN EN ISO 3219 |
| Pot Life (Mixed with WACKER Catalyst T 77 PLUS, 8:1, at 23°C) | 3 - 5 | minutes | DIN EN ISO 3219 |
| Pot Life (Mixed with WACKER Catalyst T 77, 8:1, at 23°C) | 5 - 10 | minutes | DIN EN ISO 3219 |
| Tack-Free Time (Mixed with WACKER Catalyst T 77 PLUS, 10:1, at 23°C) | approx. 45 | minutes | — |
| Tack-Free Time (Mixed with WACKER Catalyst T 77, 10:1, at 23°C) | approx. 90 | minutes | — |
| Tack-Free Time (Mixed with WACKER Catalyst T 77 PLUS, 12:1, at 23°C) | 75 | minutes | — |
| Tack-Free Time (Mixed with WACKER Catalyst T 77, 12:1, at 23°C) | approx. 120 | minutes | — |
| Tack-Free Time (Mixed with WACKER Catalyst T 77 PLUS, 8:1, at 23°C) | approx. 35 | minutes | — |
| Tack-Free Time (Mixed with WACKER Catalyst T 77, 8:1, at 23°C) | approx. 60 | minutes | — |
Table 3 of 4
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density (in water, at 23°C) | 1.23 | g/cm³ | DIN EN ISO 1183-1 A |
| Elongation (at break) | 130 | % | ISO 37 Type 1 |
| Shore Hardness A | 32 | — | DIN ISO 48-4 |
| Tear Strength | 3.8 | N/mm | ASTM D 624 B |
| Tensile Strength | 2 | N/mm² | ISO 37 Type 1 |
Table 4 of 4
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density (at 23°C) | 1.28 | g/cm³ | DIN EN ISO 2811-2 |
| Dynamic Viscosity | 20000 | mPa·s | Brookfield |
