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Henkel Adhesive Technologies

Henkel Adhesive Technologies

Flexible sealants


Translucent, highly flexible silicone sealant for the medical industry

This versatile 1-part light-curing silicone material is used for the assembly, potting and coating of medical devices, especially those comprised of silicone or requiring high flexibility. Combined with a secondary moisture cure mechanism it allows for shadow curing.

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Part no. (SKU/IDH)

LOCTITE® SI 5248, 300 ml Standard Cartridge



LOCTITE® SI 5248 is a translucent, straw-colored, thixotropic light-curing acetoxy silicone sealant. It has deep light cure capability – both ultraviolet and visible – combined with a secondary moisture cure mechanism for shadow curing. It combines high strength with high flexibility on a variety of substrates: it is suited to plastics and highly suited to glass, ceramics and metals. It fluoresces under UV light – great for quality control – and has a tack-free time >30 secs and a fixturing time also >30 secs. ISO 10993 quality tested.

Chemical basis / base:

Alkoxy silicone



Key characteristics:

Secondary cure system: atmosphere,Wavelength for cure: UV

Specific gravity, @ 25.0 °C:


Viscosity, Brookfield, @ 25.0 °C:

50000.0 mPa·s (cP) - 80000.0 mPa·s (cP)

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