Product description
Bostik STR220A Multipurpose Sealant is a Silyl Modified Polymer (SMP)-based all-purpose elastomeric sealant, suitable for bonding and sealing joints and seams.
STR220A is developed for bonding and sealing in various industries, including bus, RV, and trailer assembly. The product adheres well to most coated and uncoated metals, glass, PVC, polyester, and coated wood. Substrates should be clean, dry, and dust/grease free prior to bonding. Low surface energysubstrates, like polyolefins and PTFE, mustbe treated before bonding. The use of Prep M is recommended for higher adhesion strength. For bare wood and other porous substrates, the use of Prep G is recommended. Consult the technical data sheets for Prep M and Prep G for more details. Contact Bostik for additional information, including adhesion to substrates not mentioned here.
Features of Bostik STR220A Multipurpose Sealant
- Good UV-resistance and aging properties
- Solvent, isocyanate and PVC free
- Neutral and odorless curing
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs. With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with: Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.About Prostech
TYPICAL PHYSICAL PROPERTIES | |
Description | Results |
Basic Material | Silyl Modified Polymer (SMP) |
Curing Method | Moisture |
Specific Gravity | 1.6 g/ml |
Skin Forming Time | 30 min. (70°F/20°C/50% R.H.) |
Curing speed after 24 hrs | 2 mm (70°F/20°C/50% R.H.) |
Shore A hardness | 44 (ASTM 2240) |
Tensile stress at break | 270 psi (ASTM 412) |
Elongation at break | 220% (ASTM 412) |
Shear stress | 180 psi (ASTM D1002) (Al-Al 1/16″ thickness, test speed 2 in/min) |
Solvent percentage | 0% |
Isocyanate percentage | 0% |
Temperature resistance | -40°F to 250°F (–40°C to 121°C) |
Application temperature | 41°F to 95°F (5°C and 35°C) |
UV- and weather resistance | Excellent |
