Sikaflex®-11 FC
One-component advanced polyurethane, elastic joint sealant and adhesive
Sikaflex®-11 FC is a one-component, gun-grade, adhesive and sealing compound of permanent elasticity. This dual-purpose material is based on a special moisture-cured polyurethane with an accelerated curing time that meets ASTM C920 Type S, Grade NS, Class 12.5 for internal and external applications.
- Excellent adhesion to all cement-based materials, brick, ceramics, glass, metals, wood, epoxy, polyester and acrylic resin.
- Fast cure rate.
- Good weathering and water resistance.
- Non-corrosive.
- Can be over painted with water, oil, and rubber-based paints. (Preliminary tests recommended).
- High durability and ageing resistance.
- High pick resistance
Usage
As an elastic adhesive for:- Most common construction materials.
- Floor moldings and skirting boards.
- Acoustic ceiling tiles.
- Metal.
- Wood.
- Concrete.
- Seam sealing.
- Metal.
- Wood.
- Aluminum fabrication.
- Bolted lap joints.
- Skirting boards.
- Base boards.
Advantages
- Excellent adhesion to all cement-based materials, brick, ceramics, glass, metals, wood, epoxy, polyester and acrylic resin.
- Fast cure rate.
- Good weathering and water resistance.
- Non-corrosive.
- Can be over painted with water, oil, and rubber-based paints. (Preliminary tests recommended).
- High durability and ageing resistance.
- High pick resistance
Packaging
310 ml cartridge, 12 cartridges per box
600 ml foil pack, 20 foil packs per box
Colour
White, Grey, Black & Japan Beige
Product Details
Shelf life
Sikaflex®-11FC has a shelf life of 12 months from the date of production, if it is stored in undamaged, original sealed packaging and if storage conditions are met.
Storage conditions
Sikaflex®-11 FC shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C
Shore A hardness
| 40–45 | (23 °C and 50 % R.H.) (ASTM D-2240) |
Tensile strength
| ~1.55 N/mm2 | (23 °C and 50 % R.H.) (ASTM D-412) |
Movement capability
| ± 12.5 % | (ASTM C-920) |
Lap shear strength
| 1.13 N/mm2 | (23 °Cand 50 % R.H.) (ASTM D-1002 modified, glass substrate) |
Elastic recovery
| >90 % | (23 °C and 50 % R.H.) (ASTM C-719) |
Service temperature
-20 °C to +70 °C
Chemical resistance
Good resistance to water, weak acids, weak alkalis, sewerage, mineral oils, vegetable oils, fats, fuels. (Not resistant to organic solvents, paint thinner, strong acids, strong alkalis). Consult Technical Service for specific data.
Resistance to weathering
Excellent
Application
Backing material
Use closed cell polyethlene foam backing rods.
Curing rate
| Tack-free Time (TT-S-00230C) | 1 to 2 hours depending on climate |
| Final Cure | 3 to 5 days |
Consumption
Joint length (m) Joint width Joint depth
per 600 ml (mm) (mm)
foil pack
6 10 10
4 15 10
3 20 10
2 25 12
1.3 30 15
SUBSTRATE PREPARATION
All surfaces must be structurally sound, clean, dry and free from grease, oil, wax, dust and surface contaminats such as curing compounds, release agents, coatings and friable material. Sikaflex®-11FC adheres without primers and/or activators. However, for optimum adhesion and critical, high performance applications, such as on multi story buildings, highly stressed joints, extreme weather exposure or water immersion, the following priming/or pre treatment procedures shall be followed.
Non-porous substrates: Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles; slightly
roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator- 205 applied with a clean cloth. Before bonding / sealing, allow a waiting time of > 15 minutes (< 6 hours). Other metals, such as copper, brass and titanium-zinc, clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours). Apply Sika® Primer-3 N applied by brush. Allow a further waiting time of > 30 minutes (< 8 hours) before bonding / sealing. PVC has to be cleaned and pre-treated using Sika® Aktivator-215 with a clean cloth. Before bonding / sealing, allow a waiting time of > 15 minutes (< 6 hours).
Porous substrates: Concrete, aerated concrete and cement based renders, mortars and bricks, prime surface using Sika® Primer-3 N applied by brush. Before bonding / sealing, allow a waiting time of > 30 minutes (< 8 hours). For more detailed advice and instructions contact Sika Technical Services.
Note: Primers are adhesion promoters and not an alternative to improve poor preparation / cleaning of joint surfaces. Primers also improve the long term adhesion performance of the sealed joint.
CLEANING OF EQUIPMENT
Clean all tools and application equipment immediately after use with Sika® Remover-208 and / or Sika® Colma Cleaner. Once cured, hardened material can only be removed mechanically. For cleaning skin use Sika® Hand Wipes.