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Sikacryl®-621 Fire

Fire resistant acrylic sealant for joint seals

Sikacryl®-621 Fire is a fire resistant, phthalate-free acrylic sealant for interior joints in walls and floors.

  • For joints up to 60 mm
  • Provides acoustic insulation
  • 1-part ready to use, easy to apply
  • Up to 4 hours fire resistance depending on the configuration
 
Sikacryl®-621 Fire Sikacryl®-621 Fire
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Usage

Restores the fire resistance performance of a floor or wall which incorporates linear seals

Advantages

  • For joints up to 60 mm
  • Provides acoustic insulation
  • 1-part ready to use, easy to apply
  • Up to 4 hours fire resistance depending on the configuration
 

Packaging

600 ml foil pack

12 foil packs per box

Colour

White, grey

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

  • CE Marking and Declaration of Performance to EN 15651-1 - Sealants for non-structural use in joints in buildings - Facade elements
  • CE Marking and Declaration of Performance to European Technical Assessment ETA 18/1051, based on EAD 350141-00-1106:2017 - Fire stopping and fire sealing products, linear joint an gap seals
  • UL Certificate No. UL-EU-01090-CPR
  • VOC test report (USEPA Methode 24)
  • VOC Emission Test Report (CDPH)
Product Information

Composition

Acrylic dispersion

Shelf life

18 months from the date of production.

Storage conditions

The Product must be stored in the original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C.

Density

~1.60 kg/l

(ISO 1183-1)

 
Technical Information

Resistance to fire

Refer to ‘Approvals / Certificates’, Sika Fire Stopping Solution Finder or contact Sika Technical Services for specific information.

Sound insulation

Refer to UL Certificate listed in 'Approvals/Certificates' or contact Sika Technical Services for specific information.

Service temperature

−20 °C min. / +70 °C max.

Joint design

Refer to ‘Approvals / Certificates’, Sika Fire Stopping Solution Finder or contact Sika Technical Services for specific information.

Application

Application Information

Backing material

Refer to ‘Approvals / Certificates’, Sika Fire Stopping Solution Finder or contact Sika Technical Services for specific information.

Sag flow

~0 mm (20 mm profile, 50 °C)

(ISO 7390)

Ambient air temperature

+5 °C min. / +40 °C max.

Substrate temperature

+5 °C min. / +40 °C max., min. 3 °C above dew point temperature

Skinning time

~10 min (23 °C / 50 % r.h.)

Application steps

NOTES ON INSTALLATION

Reference must be made to the Sika Fire Stopping Solution Finder and respective application manual of the Product or contact Sika Technical Services for additional information.

SUBSTRATE PREPARATION

The substrate must be sound, clean, dry and free of contaminants such as diret, oil, grease, cement laitance, sealant residues and poorly bonded coatings which could affect adhesion of the primer and sealant.

The substrate must be of sufficient strength to cope with the stresses induced by the sealant during movement.

  1. Use techniques such as wire brushing, grinding, grit blasting or other suitable mechanical methods to remove weak substrate material.
  2. Repair damaged joint edges with suitable Sika repair products.
  3. Remove dust, loose and friable material from all surfaces before applying the sealant.
 

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.

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