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Sikaflex Tank N, Elastic Sealant for Chemically Exposed Joints, Exterior, Concrete Grey, 600 mL

Sikaflex Tank N, Elastic Sealant for Chemically Exposed Joints, Exterior, Concrete Grey, 600 mL

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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
Ambalare 600 mL
Utilizare Sealing Joints In Fuel Stations, Tanks, Bunds, Garages
Zonă de utilizare Exterior
Culoare Concrete Grey
Bază chimică Polyurethane
Condiții de depozitare +5 °C to +25 °C - Store in dry conditions, protected from direct sunlight.
Densitate 1.50 kg/L
Temperatură de funcționare -40 >< +70
Timp de aplicare 10 - 20 min.
Timp de uscare 24 - 48 hours
Grosime de aplicare 6 >< 20 mm
Metodă de aplicare Gun
Rezistență la radiații UV Yes
Rezistent la umiditate Yes
Rezistent la mucegai Yes
Vopsibil Yes
Etanșant Yes
Flexibil Yes

ELASTIC SEALANT FOR JOINTS EXPOSED TO CHEMICALS

Sikaflex Tank N is a 1-component, moisture-curing, elastic joint sealant.

  • High chemical resistance
  • High mechanical resistance
  • Movement capability of ± 25% (ISO 9047)
  • Good application properties
Usage
Sikaflex Tank N shall be used by professional applicators only. Sikaflex Tank N is designed for use in areas that are used for the storage, filling and handling of water polluting liquids such as: floor joints in petrol stations, joints in handling areas, storage tanks and containment bunds, and movement and connection joints in parking garages.  
Advantages
  • High chemical resistance
  • High mechanical resistance
  • Movement capability of ± 25% (ISO 9047)
  • Good application properties
Packaging

600 ml foil pack, 20 foil packs per box
Colour

Concrete Grey
Technical Information
Shore A Hardness

~35 (after 28 days)

(ISO 868)

Secant Tensile Modulus

~0.60 N/mm2 at 100% elongation (23 °C)

(ISO 8339)
~1.10 N/mm2 at 100% elongation (−20 °C)

Elastic Recovery

~80%

(ISO 7389)

Tear Propagation Resistance

~8.0 N/mm

(ISO 34)

Movement Capability

± 25% (ISO 9047)

Chemical Resistance

The following is a list of liquids for which the joint- sealing system is impermeable and resistant for up to 72 hours (medium duty). For these liquids Sikaflex Tank N is approved according to TRwS (Technical Rules on substances Hazardous to Water) for sealing in storage / filling / handling facilities for water-polluting products.
 

Group no.*

Liquids

DF 1 + 1a

Petrol (gasoline) for motor vehicles to DIN 51600 and DIN EN 590

DF 2

Aviation fuels

DF 3 + 3a + 3bExtra-light heating oil (DIN 51603-1), diesel fuel (DIN EN 590), unused internal combustion engine oils and unused vehicle gear oils, mixtures of saturated and aromatic hydrocarbons with an aromatic content < 20% by weight and a flash point > 55 °C
DF 4All hydrocarbons
DF 4aBenzene and benzene-containing materials
DF 4bCrude oils
DF 4cUsed internal combustion engine oils and used vehicle gear oils with a flash point > 55 °C.
DF 5Monohydric and polyhydric alcohols (< 48% by volume methanol) glycol ethers
DF 5aAll alcohols and glycol ethers
DF 5bMonohydric and polyhydric alcohols ≥ C2
DF 11Inorganic alkalis and alkaline-hydrolysing inorganic salts in aqueous solutions (pH > 8), excluding ammonia solutions and oxidising salt solutions (i. e. hypochlorite).

*As specified in approval guidlines for joint-sealing systems in storage/filling/handling facilieites for water-polluting liquids, Part 1. See DIBt (German Institute for Construction Technology) documentation, Book 16.1.

Service Temperature

−40 °C to +70 °C

Joint Design

The relevant technical rules for joints with elastic sealants have to be considered.
All joint sealing in storage / filling / handling facilities for water-polluting liquids and in water pollution control have to be made according to the technical approval for Sikaflex Tank N (ETA-09/0272) and its annexes. To avoid damage to sharp edges in in-situ concrete a chamfer (approx. 3–5 mm) should be made on the sides of the joint.
 

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. A width to depth ratio of 1:0.8 must 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
41512
61815
82018
103025

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 Technical Service Department.
Application Information
Backing Material

Use closed cell, polyethylene foam backing rods.
Sag Flow
0 mm (20 mm profile, 50 °C)(ISO 7390)
Ambient Air Temperature

+5 °C to +40 °C, min. 3 °C above dew point temperature
Substrate Temperature

+5 °C to +40 °C
Curing Rate

~2.5 mm/24 hours (23 °C / 50% r.h.)

(CQP 049-2)
Skin Time

~90 minutes (23 °C / 50% r.h.)

(CQP 019-1)