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
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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 |
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) | |
Tear Propagation Resistance
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 + 3b | Extra-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 4 | All hydrocarbons | | DF 4a | Benzene and benzene-containing materials | | DF 4b | Crude oils | | DF 4c | Used internal combustion engine oils and used vehicle gear oils with a flash point > 55 °C. | | DF 5 | Monohydric and polyhydric alcohols (< 48% by volume methanol) glycol ethers | | DF 5a | All alcohols and glycol ethers | | DF 5b | Monohydric and polyhydric alcohols ≥ C2 | | DF 11 | Inorganic 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] | | 2 | 10 | 10 | | 4 | 15 | 12 | | 6 | 18 | 15 | | 8 | 20 | 18 | | 10 | 30 | 25 |
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.
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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) |
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The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
