STR220A
Bostik STR220A is a versatile SMP-based multipurpose sealant ideal for industrial joint and seam bonding. It adheres well to metals, glass, PVC, polyester, and coated wood, and cures odorlessly without solvents, isocyanates, or PVC.
STR220A Features:
- Solvent-, isocyanate-, and PVC-free
- Excellent UV and aging resistance
- Neutral and odorless cure
STR220A Applications:
- Bonding and sealing in RV, trailer, and bus assembly
- Joints and seams in transportation and industrial builds
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Typical Properties
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TYPICAL PHYSICAL PROPERTIES |
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|
Description |
Results |
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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% |
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Isocyanate percentage |
0% |
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Temperature resistance |
-40°F to 250°F (–40°C to 121°C) |
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Application temperature |
41°F to 95°F (5°C and 35°C) |
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UV- and weather resistance |
Excellent |





