Nuco FireStop SUPPLY

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Nuco FireStop SUPPLY

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  • Home
  • Contact
  • Products
  • TDS and SDS
    • GG-266
    • GG-200
    • SL-100
    • SSC Collar
  • System Finder
  • Support

Self-Seal GG-266 Intumescent Silicone Firestop

Features and typical uses:

- Intumescent Silicone (expands when exposed to temperatures in excess of 150°C (300°F))

- Non-sag silicone

- Water resistant before, during, and after cure

- Freeze-thaw stable

- Protects your wall & floor openings

- Tested at positive pressure to simulate the pressure differentials that can occur in a fire situation


Self-Seal GG-266 seals combustible service penetrations in fire and smoke rated wall or floor separations.


Basic uses include firestopping:

- Up to 2" PVC, ABS, IPEX Aquarise, PEX, FRPP, and CPVC penetrations - only a minimum 5/16" annular space needed

- Upto 4" PVC, IPEX XFR 15-50 PVC, Royal Pipe HRS2550, ABS, and CPVC pipe penetrations through conical or cored openings in concrete floor slabs

Typical Properties:

These values are not intended for use in preparing specifications. Spec Writers; please contact NUCO

Inc. before writing specifications if any further information is required.


Description                                                                            Specification     

Type:                                                                                          One part silicone sealant   

Cure method:                                                                         Neutral, moisture cure   

Specific gravity:                                                                    1.25   

Working time:                                                                        20 - 40 minutes   

Application temperature range:                                   -29° to 50°C (-20° to 122° F)   

Full cure / adhesion:                                                           14 - 21 days         


As Cured - Physical - after 7 days at 25°C (77°F) and 50% relative humidity.

Free Expansion Volume:                                                  >6 times original volume:   Heated to 350°C (662°F)   

ASTM C1299 - service temperature range:               -40° to 110°C (-40° to 230°F)   

ASTM E-84 - surface burning characteristics:         FSI = 0 SD = 27    

Safety Data Sheet

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Technical Data Sheet

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