Description

Sikaflex®-510 AM50

Isocyanate free, low modulus sealant

Sikaflex®-510 AM50 is a 1-component, high movement Silane Terminated Polymer (STP) sealant that cures on exposure to atmospheric humidity. It is well suited for applications that require both paintability and adhesion to non-porous substrates.

Meets the requirements of ASTM C-920 for Type S, Grade NS, Class 50, Use A, M, G
Non-staining in acc. with ASTM C1248
Meets the requirements of AAMA 808.3

PRODUCT BENEFITS

Meets the requirements of ASTM C-920 for Type S, Grade NS, Class 50, Use A, M, G
Non-staining in acc. with ASTM C1248
Meets the requirements of AAMA 808.3
Good UV and weathering resistance
Designed for adhesion to porous and non-porous substrates
Isocyanate free
Overpaintable with most paints

Usage

Sikaflex®-510 AM50 can be used for joints or gaps connecting dissimilar substrates such as vinyl to concrete or aluminum to EIFS. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-510 AM50 on materials prone to stress cracking. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.

Surface Preparation

Surfaces must be clean, dry and free from grease, oil, dust and contaminants.
Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Suggestions for surface preparation may be found on the current edition of the appropriate Sika® Pre-Treatment Chart. Consider that these suggestions are based on experience and have in any case to be verified by tests on original substrates.

Application

Sikaflex®-510 AM50 can be processed between 5 °C and 40 °C (41 °F and 104 °F), climate and product, but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and process material is between 15 °C and 25 °C (59 °F and 77 °F).

Sikaflex®-510 AM50 can be processed with manual, pneumatic or electric driven piston guns.

Tooling and finishing

Tooling and finishing must be carried out within the skin time of the product. It is recommended using Sika® Slick. Other finishing agents must be tested for suitability and compatibility prior the use.

Removal

Uncured Sikaflex®-510 AM50 may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin have to be washed immediately using hand wipes or a suitable industrial hand cleaner and water.
Do not use solvents on skin.

Overpainting

Sikaflex®-510 AM50 can be best painted within the skin formation time. If painting process takes place after the sealant has built a skin, adhesion could be improved by treating the joint surface with Sika® Aktivator-100 or Sika® Aktivator-205 prior to paint process. If the paint requires a baking process (> 80 °C (176 °F)), best performance is achieved by allowing the sealant to fully cure first. All paints have to be tested by carrying preliminary trials under manufacturing conditions.
The elasticity of paints is usually lower than that of sealants. This could lead to cracking of the paint in the joint area.

Application Limits

Maximum depth of sealant must not exceed 13 mm (1/2 in.); minimum depth is 6 mm (1/4 in.).
Not intended for immersion, structural glazing applications, or horizontal vehicular traffic.
Do not apply to damp or wet substrates.
Allow treated wood to age six months before application.

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