Sikaflex®-508
Verified by manufacturer over a year ago
Low emission multipurpose STP sealant.
Application
Suitable for internal and external applications. It adheres well to a wide variety of substrates and is especially compatible with foamed polystyrene foams (XPS).
Description
Sikaflex®-508 is a low emission one-component isocyanate free sealant based on the Sika Silane Terminated Polymer (STP) technology. Sikaflex®-508 meets the most severe environment, health and safety standards and sets a new benchmark in this technology. The product cures on exposure to atmospheric humidity to form a durable elastomer.
Features and benefits:
- Very low emission.
- Compatible with foamed polystyrene (XPS).
- Bonds well to a wide variety of substrates without the need for special pre-treatments.
- Easy to process.
- Low odour.
- Isocyanate, phthalate, plasticizer, solvent and PVC free.
General information
Color | Black |
Material | Polymer |
Shape | Formless |
Uniclass | |
CAWS | M41/455 Sealant movement joints with metal edgings L10/75 Sealant joints M40/75 Sealant movement joints H43/150 Profiled plastics sheet H43/160 Profiled plastics sheet H30/160 Profiled plastic sheet rooflights or wall lights H31/240 Lining H31/241 Lining M40/815 Sealant movement joints M40/805 Sealant movement joints with metal edgings F30/76 Movement joints with sealant L20/80 Sealant joints H31/160 Profiled plastics sheet H32/110 Plastics H51/610 Sealant joints H51/630 Movement joints H11/777 Weathersealing for structural sealant/ bonded glazing H11/772 Curtain walling joint assembly sealants H13/740 Sealant joints H30/246 Steel lining H30/247 Steel lining H30/234 Gutters H31/110 Metal H31/120 Metal H31/234 Gutters H32/120 Plastics H41/655 Sealant jointing proprietary system H43/234 Gutters L10/810 Sealant joints L20/820 Sealant joints F11/116 Mortar jointed, sealant pointed glass block walling F11/121 Sealant jointed glass block walling F11/141 Sealant jointed glass block walling F11/410 Perimeter/ Expansion joints with sealant F30/610 Movement joints with sealant H42/661 Sealant joints |
Product range |
Specification data - Construction joint sealants
Material | Silane terminated polymer. |
Colour | Black.Manufacturer guidanceCQP001-1. |
Cure | Moisture-curing. Manufacturer guidanceCure mechanism. |
Cure speed | Manufacturer guidanceCQP049-1. Consult manufacturer's literature for details. |
Density | 1.5 kg/L. Manufacturer guidance(Uncured). |
SAG | Good. Manufacturer guidanceNon-sag properties. |
Application temperature | 5–40°C. Manufacturer guidance(Ambient). |
Shrinkage | 1%. Manufacturer guidanceCQP014-1. |
Shore A hardness | 35. Manufacturer guidanceCQP023-1/ ISO 7619-1 |
TensileStrength | 1.5 MPa. Manufacturer guidanceCQP036-1/ ISO 527. |
Elongation at break | 250%. Manufacturer guidanceCQP036-1/ ISO 527. |
Tear resistance | 4 N/mm. Manufacturer guidanceTear propagation resistance, CQP045-1/ ISO 34. |
Service temperature | -50 to +80°C. Manufacturer guidanceCQP513-1. |
Shelf life | 9 months (drum); 12 months (unipack). Guidance for specification option: Storage below 25°C. Manufacturer guidanceCQP016-1. |