LOCTITE® SI 5366 is a versatile, silicone adhesive with high-flexibility sealing capabilities in industrial, agricultural, automotive, and electrical applications. It exhibits excellent performance in applications with temperatures up to 250°C and cures with room temperature vulcanizing cure.
LOCTITE® SI 5366 is an industrial acetoxy silicone sealant for bonding, sealing, and protecting components exposed to harsh operating conditions. It offers a highly flexible seal to ovens, heat exchangers, water heaters, steam circuits, electrical boxes, side windows in trains, and more. LOCTITE® SI 5366 cures with room temperature vulcanizing cure, providing rapid skin formation and high elongation at break. It also exhibits enhanced load-bearing and shock-absorbing properties.
Appearance: Clear paste
Specific gravity @ 25°C: 1.04
Extrusion rate, g/min: 25 to 55
Flow, ISO 7390, mm: <2
Shore hardness, ISO 868: 25
Elongation, at break, ISO 37, %: 530
Tensile strength, ISO 37 N/mm² (psi): 2.5 (360)
Dielectric breakdown strength, kV/mm: 18
Volume resistivity, IEC 60093, Ω·cm: 1×10¹⁴
Dielectric constant, IEC 60250: 2.8
Primary Chemistry: Acetoxy silicone
Degradation of seals at high temperatures Poor flexibility of adhesive sealants in industrial applications
Sealing side windows in trains and heat sources (ovens, heat exchangers, steam circuits, water heaters) Providing protection/insulation of electrical boxes Bonding HCR silicones General maintenance
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