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FS719 HP Blue for CPVC is a unique sealant, developed specifically for CPVC materials.The product is a distinctive blue colour, for easy visual identification and traceability.

FS719 is used to reinstate the compartment fire performance of compartment lines (walls & floors) which have been breached by CPVC combustible sprinkler systems.


•    Up to 2 hours fire resistance -Tested to EN 1366-3
•    Versatile & easy to apply
•    Can be used with FB750 Intubatt Coated Batt
•    Tested in openings up to 365 x 700 mm

Technical data

PropertyTest MethodResult
Composition Water-based graphite sealant 
Specific Gravity 1.33
Viscosity Thixotropic
Hardness Shore A  ~ 50
Skin Formation Time 40 - 60 minutes depending on temperature & humidity
Cure Rate at 20°C 1 mm/day
pH 8.5-9.5
Application Temperature  +5°C to 35°C
Service Temperature Range  -25°C to +70°C
StorageStore between +5°C and +25°C in dry conditions.
Shelf Life9 months when stored in its original unopened containers.

Usage Guidelines


  • All installers should have received training on the handling procedures required by the manufacturers of CPVC pipes on their products.
  • All surfaces must be clean and sound, free from dirt, grease and any other contamination. Cleaning materials used must be approved & recommended by the CPVC pipes manufacturer.
  • Check FS719 specification is suitable for substrate, fire rating, annular space and seal depth.
  • We recommend that the surface of substrate temperature be +5°C or above at the time of application. Contact Technical Services for
  • advice regarding lower temperature application.


For full application details, refer to product data sheet.

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