Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Markets
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Cure Method
- Application Limitations
When bonding and sealing PMMA and polycarbonate, under tension, stress corrosion cracking may occur. In such cases STP 1921 should not be utilized.
- Paintability Information
STP1921 may be over-painted, however due to the large number of paints and varnishes we strongly recommend a compatibility test before application. The drying time of alkyd resin based paints may increase.
- Application Instructions
- The substrates must be clean, dry, free of oil and grease.
- Sausage is applied with the corresponding Hand or Air pressure pistols.
- In the case of compressed air application, a pressure of (0.2-0.4) MPa is required.
- After application, STP1921 can be smoothed with soapy water.
- Typical Applications
- Elastic bonding of metals and plastics.
- Elastic, interior and/or exterior seam and joint sealing.
- In the following areas: vehicle body, caravan, railway carriage, container, general metal and apparatus construction; the electrical, plastics, air-conditioning and ventilation industries.
Properties
- Physical Form
- Appearance
- White/Black/Gray thixotropic paste
- Technical Data
Value Units Test Method / Conditions Sag Resistance No sagging - - Specific Density approx. 1.45 - - Skin Formation Time (at 23±2°C, 50±5 % relative humidity) approx. 30 min - Cure Rate (at 23±2°C, 50±5 % relative humidity) approx. 3 mm/24h - Hardness approx. 35 Shore A ISO7619, GB/T531 Tensile Strength approx. 1.8 MPa ISO37, GB/T528 Elongation (Break) approx. 350 % ISO37, GB/T528 Application Temperature 5 - 40 °C - Operating Temperature -50 to 90 °C - Short Exposure 120 °C - Storage Temperature 8 - 28 °C - - Adhesion Information
STP 1921 has been tested and found to have excellent adhesion to the following unprimed substrates: aluminum, acrylic-coated aluminum, brass, steel, stainless steel, glass, fiberglass, ABS, rigid PVC, polyester and etc. Depending on the surface it can be necessary to roughen the surface or to use a primer as an adhesion promoter to provide optimum adhesion.
Packaging & Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 12 months
- Storage Condition
Shelf-life: 12 months in original packaging