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Sikacryl-621 Fire+, Fire Resistant Acrylic Sealant for Penetrations, Interior, White, 300 mL

Sikacryl-621 Fire+, Fire Resistant Acrylic Sealant for Penetrations, Interior, White, 300 mL

Adhesives & Sealants
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 300 mL
Usage Restores Fire Resistance In Walls/Floors With Penetrations
Usage Area Interior
Color White
Chemical Base Acrylic dispersion
Storage Conditions +5 °C to +25 °C - Store in sealed packaging, dry conditions.
Density 1.6 kg/L
Service Temperature -20 >< +70
Application Time 15 min.
Curing Time 24 hours
Application Thickness ≤ 30 mm
Application Method Gun
UV Resistant No
Moisture Resistant Yes
Mold Resistant Not specified
Paintable Yes
Sealant Yes
Flexible Yes

Fire resistant acrylic sealant for linear seals and penetrations

Sikacryl-621 Fire+ is a fire resistant, intumescent, phthalate-free acrylic sealant used for interior joints and penetration seals in fire compartment walls and floors.

  • Up to 4 hours fire resistance.
  • 1-part ready to use, easy to apply.
  • Provides acoustic insulation.
  • Tested for a large variety of relevant wall and floor types.
Usage
  • Restores the fire resistance performance of a wall or floor which incorporates penetration services or linear seals.
  • Can be used in combination with SikaSeal-626 Fire Board+, SikaSeal-627 Fire Collar+ and SikaSeal-629 Fire Wrap+.
Advantages
  • Up to 4 hours fire resistance.
  • 1-part ready to use, easy to apply.
  • Provides acoustic insulation.
  • Tested for a large variety of relevant wall and floor types.
 
Packaging

300 ml cartridge

12 cartridges per box
Colour

White
Technical Information
Service Temperature

−20 °C min. / +70 °C max.

Resistance to fire

Refer to ‘Approvals / Certificates’ or contact Sika Technical Services for specific information.

Joint Design

Refer to ‘Approvals / Certificates’ or contact Sika Technical Services for specific information.
Application Information
Sag Flow

~0 mm (20 mm profile, +50 °C) 

(ISO 7390)
Ambient Air Temperature

+5 °C min. / +30 °C max. 
Substrate Temperature

+5 °C min. / +30 °C max., min. +3 °C above dew point temperature
Backing Material

Refer to ‘Approvals / Certificates’ or contact Sika Technical Services for specific information.
Skin Time

~15 min (+23 °C / 50 % r.h.) 

(CPQ 019-1)