Product Data Sheet Show all documents

Sikacryl®-620 Fire

Fire rated sealant for linear joints and penetrations

Sikacryl®-620 Fire is a fire rated 1-component, water-based intumescent sealant.

  • Up to 5 hours fire resistance in linear joints             (EN 1366-4)
  • Up to 2 hours fire resistance in penetrations            (EN 1366-3)
  • Good workability
  • Good adhesion to a wide range of substrates
  • Water-based
  • Overpaintable (overpaintability test must be conducted first)
 
Product Data Sheet Show all documents

Usage

Sikacryl®-620 Fire is designed for fire rated connection joints and penetration seals on porous and non-porous substrates. Suitable for interior applications only.

Advantages

  • Up to 5 hours fire resistance in linear joints             (EN 1366-4)
  • Up to 2 hours fire resistance in penetrations            (EN 1366-3)
  • Good workability
  • Good adhesion to a wide range of substrates
  • Water-based
  • Overpaintable (overpaintability test must be conducted first)
 

Packaging

600 ml foil pack, 12 foil packs per box

Colour

Grey

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

  • EMICODE EC1 PLUS
  • LEED v4 EQc 2: Low-Emitting Materials

APPROVALS / STANDARDS

  • EN 15651-1 F INT
  • ISO 11600 12.5 P
  • EN 1366-3 assessment report
  • EN 1366-4 assessment report
  • ETA (ETAG 026)
  • UL listing (UL 2079)
  • EN 13501-2 and EN 13501-1 classification report
  • EN 140-3 test report
Product Information

Chemical Base

acrylic dispersion

Shelf Life

Sikacryl®-620 Fire has a shelf life of 12 months from the date of production, if stored in undamaged, original, sealed packaging, and if the storage conditions are met.

Storage Conditions

Sikacryl®-620 Fire shall be stored in dry conditions, where it is protected from direct sunlight, at temperatures between +5 °C and +25 °C.

Density

~1.65 kg/l

 (ISO 1183-1)

 
Technical Information

Service Temperature

−25 °C min. / +70 °C max. (dry)

Joint Design

The joint width must be designed to suit the joint movement required and the movement capability of the sealant. The joint width shall be ≥ 10 mm and ≤ 35 mm. The joint depth shall be ≤ 15 mm. A width to depth ratio of 2:1 must be maintained.

All joints must be correctly designed and dimensioned in accordance with the relevant standards, before their construction.
 

For larger joints please contact Sika Technical Service.

Application

Application Information

Backing Material

Use polyethylene foam backing rods.

Sag Flow

~1 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

Curing Rate

~2 mm/24 hours (23 °C / 50 % r.h.)

(CQP 049-2)

Skin Time

~15 min (23 °C / 50 % r.h.) 

(CPQ 019-1)
Consumption

Consumption

Joint width [mm]

Joint depth [mm]

Joint length [m] per 600 ml foil pack

10106

15

10

4
20

10

3
25122
3015

1.3
Application steps

SUBSTRATE PREPARATION

The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. Sikacryl®-620 Fire adheres without primers and/or activators.

Iron and steel must be protected with an anti-corrosion primer.

CLEANING OF TOOLS

Clean all tools and application equipment immediately after use. Once cured, residual material can only be removed mechanically.
 

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