Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Special Features
- Food-contact
- High tear-resistant
Applications & Uses
- Applications
- Cure Method
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
- Dairy Applications
- Exhaust-Pipe Suspensions
- General Automotive Parts
- Molded Parts
- Profiles & Tubings
- Sanitary
- Vibration Dampers
- Application Details
- ELASTOSIL® R 420 /40 S is a general purpose grade that may be used for producing molded, extruded or calendered articles like seals, gaskets, sheets, tubings and profiles.
- Postcured parts can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA 177.2600 under observance of any given limitations on extractable and volatile substances.
Processing
- The raw rubber requires the addition of peroxides for vulcanization at elevated temperatures. A homogeneous incorporation is a must, but please avoid temperatures >30°C along the incorporation process in order to maintain best processing behavior. Pot life is depending on the used peroxide and storage condition.
Properties
- Cured Properties
- Note
Cure conditions (post-cured 4 h / 200 °C):
- 1.5% ELASTOSIL® AUX Crosslinker E (50% paste of bis-(2,4-dichlorobenzoyl)-peroxide in silicone fluid); 10 min / 135°C in press.
- 0.7% ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide); 15 min /165°C in press.
| Value | Units | Test Method / Conditions | |
| Compression Set (Curing Agent C1, at 22 hours, 175°C) | 24 | % | DIN ISO 815-1 type B method A |
| Compression Set (Curing Agent E, at 22 hours, 175°C) | 34 | % | DIN ISO 815-1 type B method A |
| Density (Curing Agent C1) | 1.12 | g/cm³ | DIN EN ISO 1183-1 A |
| Density (Curing Agent E) | 1.12 | g/cm³ | DIN EN ISO 1183-1 A |
| Elongation (at break, Curing Agent C1) | 800 | % | ISO 37 Type 1 |
| Elongation (at break, Curing Agent E) | 630 | % | ISO 37 Type 1 |
| Rebound Resilience (Curing Agent C1) | 47 | % | ISO 4662 |
| Rebound Resilience (Curing Agent E) | 53 | % | ISO 4662 |
| Shore Hardness A (Curing Agent C1) | 43 | — | DIN ISO 48-4 |
| Shore Hardness A (Curing Agent E) | 43 | — | DIN ISO 48-4 |
| Tear Strength (Curing Agent C1) | 37 | N/mm | ASTM D 624 B |
| Tear Strength (Curing Agent E) | 34 | N/mm | ASTM D 624 B |
| Tensile Strength (Curing Agent C1) | 10 | N/mm² | ISO 37 Type 1 |
| Tensile Strength (Curing Agent E) | 9 | N/mm² | ISO 37 Type 1 |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Country Availability
- Regional Availability
- Packaging Information
This product is available in 20 kg and 540 kg cardboard packaging.
Storage & Handling
- Storage Information
Please store the cardboard boxes in a dry and cool place. Already opened boxes should be closed again to avoid any contamination.