Skip to Content
  1. All Products
  2. Sikasil-670 Fire, Fire Rated Joint Sealant, Interior & Exterior
Sikasil-670 Fire, Fire Rated Joint Sealant, Interior & Exterior

Sikasil-670 Fire, Fire Rated Joint Sealant, Interior & Exterior

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.

Read more
https://www.polytrade.global/web/image/product.template/17525/image_1920?unique=b734672
You have already submitted a query for this product today.
  • Color
  • Packing

This combination does not exist.

Contact Us
Preview TDS
Download TDS
General Specifications
Packaging 600 mL
Usage Fire-Rated Joint Sealing On Porous/Non-Porous Substrates
Usage Area Interior & Exterior
Color White
Chemical Base Neutral cure silicone
Storage Conditions +5 °C to +25 °C - Store in dry conditions, protected from sunlight.
Density 1.35 kg/L
Service Temperature -40 >< +150
Application Time N/A
Curing Time N/A
Application Thickness N/A
Application Method Gun
UV Resistant Yes
Moisture Resistant Yes
Mold Resistant N/A
Paintable N/A
Sealant Yes
Flexible Yes

FIRE RATED JOINT SEALANT

Sikasil-670 Fire is a fire rated, 1-component, moisture-curing, low-modulus elastic joint sealant.

  • Up to 4 hours fire resistance according to EN 1366-4.
  • Very good resistance to weathering.
  • Movement capability of ± 35 % (ASTM C 719).
  • Easy to smooth and very good workability.
  • Good adhesion to many different substrates.
  • Neutral curing.
Usage
Sikasil-670 Fire is designed for fire rated movement and connection joints on porous and non-porous substrates.
Advantages
  • Up to 4 hours fire resistance according to EN 1366-4.
  • Very good resistance to weathering.
  • Movement capability of ± 35 % (ASTM C 719).
  • Easy to smooth and very good workability.
  • Good adhesion to many different substrates.
  • Neutral curing.
 
Packaging

600 ml foil pack, 12 foil packs per box.

380 ml cartridge, 25 cartridges per box.

300 ml cartridge, 12 cartridges per box.
Colour

White, grey, black
Technical Information
Shore A Hardness

~20 (after 28 d)

(ISO 868)

Secant Tensile Modulus

~0.30 N/mm2 at 100 % elongation (23 °C)

(ISO 8339)

~0.50 N/mm2 at 100 % elongation (−20 °C)

Elastic Recovery

~70 %

(ISO 7389)

Tear Propagation Resistance

~4.0 N/mm

(ISO 34)

Movement Capability

± 25 %

(ISO 9047)

± 35 %(ASTM C 719)

Service Temperature

−40 °C min. / +150 °C max.

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 ≤ 40 mm. The joint depth shall be ≤ 20 mm. A width to depth ratio of 2:1 should be maintained (for exceptions, see table below).
 

Standard joint widths for joints between concrete elements:

Joint distance [m]

Min. joint width [mm]

Min. joint depth [mm]

21010
41510
62010
83015
103517

All joints must be correctly designed and dimensioned in accordance with the relevant standards, before their construction. The basis for calculation of the necessary joint widths are the type of structure and its dimensions, the technical values of the adjacent building materials and the joint sealing material, as well as the specific exposure of the building and the joints.
 

For larger joints please contact our Sika Technical Service.
Application Information
Backing Material

Use polyethylene foam backing rods.
Sag Flow

~2 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
Curing Rate

~2 mm/24 hours (23 °C / 50 % r.h.)

(CQP 049-2)
Skin Time

~25 min (23 °C / 50 % r.h.)

(CQP 019-1)
Tooling Time

~20 min (23 °C / 50 % r.h.)

(CQP 019-2)