Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Ready-to-Use Product Features
- Special Features
- Condensation-curing
- Electrically insulating
- Oil resistant
- One-component
- Primerless adhesion to most substrates
- Ready to use
- Resistant to moisture
- Thixotropic
- UV & weathering-resistant
Applications & Uses
- Markets
- Application Area
- Cure Method
- Applications
- Formed-In-Place-Gaskets (Wet Type)
- Heating & Cooling
- Machine Building
- Application Details
- General-purpose FIPG grade for technical applications.
- Sealant for automotive applications.
Processing
- ELASTOSIL N 2137 is a is a ready-to-use, one-part silicone rubber which starts curing when exposed to air moisture. Typical curing characteristics are given in the table "Properties Uncured". As RTV-1 silicones require humidity for curing, free access of air moisture to the silicone rubber is essential.
- Additionally, the vulcanization time of ELASTOSIL® N 2137 can be greatly reduced by increasing the level of air's relative humidity. Please note that, unlike the initial skin formation, the total curing rate of RTV-1 silicones is limited by moisture's diffusion speed in silicone rubber.
- Since increasing the curing temperature has just a minor effect both on the skin formation time and the curing speed, ELASTOSIL® N 2137 typically is vulcanized at room temperature. After completion of the vulcanization the silicone elastomer may continuously be exposed to constantly changing climatic conditions, UV radiation and high temperature without damage.
- Cured ELASTOSIL® N 2137 usually shows good primerless adhesion to many substrates, e.g. glass, ceramics, metals, plastics, powder coatings and materials based on wood.
Removal: If removal of the silicone from machines or dispensing equipment is necessary, white spirit or similar nonpolar solvents are recommended. However, cleaning ideally should take place before the silicone rubber is fully vulcanized. Cured silicone needs to be rubbed off or removed mechanically, if necessary in combination with a swelling agent (solvent) or a chemical silicone remover.
Properties
- Physical Form
- Cured Properties
- Uncured Properties
- Properties
Uncured:
- Non-slump
- Stiff pasty consistency
- By-product of curing: alcohol
Cured:
- Medium hardness
- Designed as gap sealant and bonding agent
- Improved resistance against motor oil and coolants.
- Note
Curing Conditions: 14 days at 23°C and 50% rel. humidity, 2 mm sheet, no post-curing.
| Value | Units | Test Method / Conditions | |
| Density (in water, at 23°C) | 1.27 | g/cm³ | DIN EN ISO 1183-1 A |
| Recommended Service Temperature | -50 to +180 | °C | — |
| Elongation (at break) | 400 | % | ISO 37 Type 1 |
| Shore Hardness A | 40 | — | DIN ISO 48-4 |
| Tensile Strength | 2.3 | N/mm² | ISO 37 Type 1 |
| Value | Units | Test Method / Conditions | |
| Curing Speed (at 23°C, 50% r.h) | 1 | mm/day | — |
| Density (at 23°C, 1013 hPa) | 1.25 | g/cm³ | ISO 2811 |
| Dynamic Viscosity (at 25°C, Shear rate 0.5 s⁻¹) | approx. 1600000 | mPa·s | DIN EN ISO 3219 |
| Dynamic Viscosity (at 25°C, Shear rate 25 s⁻¹) | approx. 160000 | mPa·s | DIN EN ISO 3219 |
| Skin Formating Time (at 23°C, 50% r.h) | 15 - 30 | minutes | — |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Safety & Health
- Safety Note
- While curing ELASTOSIL® N 2137 releases a total of approx. 2.5 - 3 wt.% alcohol. These vapors should not be inhaled for long periods or in high concentrations. Hence ventilation of the work place is recommended.
- Contact of the uncured silicone rubber with eyes and mucous membranes must be avoided as this can cause irritation. If, despite all protective measures, uncured silicone rubber comes into contact with the skin or eyes, irrigate the affected area immediately with copious amounts of water for several minutes. If the irritation continues, seek medical advice.
Packaging & Availability
- Country Availability
- Regional Availability