Sealants & Joints
Vetoflex SS789

High performance gun grade firestop, silicone neutral, silicone sealant.



Cladding and glazing
Steel, copper and EMT pipes
Insulated steel and copper pipes
Cable bundles
Closed or vented plastic pipes
HVAC penetrations
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Technical Data Sheet
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Technical Information
Product Description

Vetoflex SS789 is a single component high performance gun grade fire-stop weather sealant based on fire resistant Silicone formulation. The sealant is suitably formulated by using special additives and chemicals. The product is fire resistant, easy to apply and seals joints between construction parts subjected joint movement.Vetoflex SS789 helps to protect combustible and non-combustible penetrations for up to 4 hours fire rating. This product can be used for sealing all movement joints up to 50% and restricts the passage of fire and smoke from room to room and to escape routes. Since the sealant is low VOC, it is user friendly and confirms to green building requirements.


  • Excellent adhesion on most building materials.
  • Protects most typical fire-stop penetration applications
  • Easy to apply with fast clean up.
  • Helps to protect combustible and non-combustible penetrations for up to 4 hours fire rating
  • Seals joints between construction parts subjected joint movement
  • User friendly and confirms to green building requirements as it has low VOC
  • For use with Concrete, masonry, drywall and wood floor assemblies
  • For use with Glass, Aluminium sandwich panels, precasts and granite claddings
  • For use with Wall and floor assemblies rated up to 4 hours
Compiliance Standard
  • DS-476 part 20 & 22


Packaging & Coverage

Vetoflex SS789 is supplied in 280 mL cartridges, Coverage: 40-45 linear cm @ width & depth of 25mm

stated consumptions data are for general guidance. 


Shelf Life & Storage

Original sealed container of Vetoflex SS789 has a shelf life of 12 months provided it is stored clear of ground in a dry shaded place below 25ºC.


White, Black and Grey
Application Information
Instructions for use


Vetoflex SS789 should be carefully applied using a mastic gun, ensuring that the material is forced well into the gap to obtain the correct joint and achieve good adhesion between surfaces. Necessary tooling to be done within 5 minutes after application


Vetoflex SS789 should be removed from tools, equipment and mixers with Vetonit Solvent XX400 immediately after use. Hardened material can only be removed mechanically.


Surface Preparation

Clean all joint surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits or algae. Roughen the surfaces, remove any laitence and expose aggregate by light scabbling or grit-blasting.

Oil and grease deposits should be removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser. 

Any joint filler must be checked to ensure it is tightly packed and no gaps or voids exist at the base of the sealing slot before positioning a bond breaker. 

The use of a bond breaker is not required in expansion joints containing cellular polyethylene joint filler, backing rod (Vetoflex PBR). For contraction joints a bond breaker tape or back-up strip must be used.

Where a particularly neat finish is required, mask the face edges of the joint before sealing and remove immediately after tooling is completed.

Additional Information
Health & Sefety

Vetoflex SS789 should not come into contact with skin and eyes or be swallowed. Avoid inhalation of vapor and spray. Use only in well ventilated areas. In case of insufficient ventilation wear suitable respiratory protection.

Wear suitable protective clothing, gloves and eye/face protection. Barrier creams provide additional skin protection.

Should accidental skin contact occur, remove immediately with a suitable skin cleanser followed by washing with soap and water. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If swallowed, seek medical attention immediately - do not induce vomiting.

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Vetoflex SS789 is non flammable at ambient conditioin.

Important note

Saveto endeavors to ensure that any advice, recommendations, information it may give, is accurate and correct. It cannot accept any liability either directly or indirectly arising from the use of its products, because it has no direct or continuous control over where or how its products are applied, whether or not in accordance with any advice, specification, recommendation or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification. 

Hard copies of TDSs are printed once or twice a year, while our technical data sheets are continuously being updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.

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Saudi Vetonit Co. Ltd. (SAVETO)
P.O. Box 52235 Riyadh 11563, KSA
Toll: (+966 11) 265 3334
Fax: (+966 11) 265 0936
800 124 9009
Fax: (+966 11) 265 0718
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