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SIRO-SIL 25 TM Silicone Sealer | Sealants Direct


SIR-O-SIL 25TM is an easy to apply, sealant that cures to a durable, flexible, silicone rubber upon application.  Developed specifically for building construction and industrial sealing applications, SIR-O-SIL 25TM is fast curing and has excellent adhesion to non-porous surfaces such as glass, metals and ceramics.  SIR-O-SIL 25TM is particularly effective for long term joint adhesion durability applications as it is highly flexible and accommodating to joint movement up to 25%.
  • Easy to apply
  • Extreme Flexibility
  • Weather Sealing
  • Top sealing in glazing applications
  • Weatherproofing between building materials

Offered in a variety of colors:

  • Clear, White, Almond, Bronze, Black, Aluminum and Tan 



SIRO-SIL 25TM is the perfect general use silicone product that is highly flexible and has broad range of applications.  SIRO-SIL 25TM is specially formulated to handle joint movement, and has exceptional adhesion to non-porous surfaces such as glass, metals and ceramics that may be found in both residential and industrial environments.
SIRO-SIL 25TM can easily be applied with conventional hand or air powered caulking equipment.    SIRO-SIL 25TM silicone sealant should have 2x the joint width to sealant depth making sure not to overfill joint area.