Product Data Sheet Safety Data Sheet Show all documents

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

Product Data Sheet Safety Data Sheet Show all documents

Usage

As an elastic adhesive for:

Cover plates, gaskets and coverings.
Acoustic ceiling tiles.
Floor moldings and door sills.
Light weight construction materials.
Wood or metal and door frames.
Roof tiles.

As an elastic joint sealer for:

Air ducts and high vacuum systems.
Containers, tanks, and silos.
Gaskets in openings in walls or floors for ducts, piling, etc.
Reservoirs or water retaining structures.
Aluminum fabrication.
Bolted lap joints.

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 (Grey Only), 20 foil packs per box

Colour

White, Grey, Black

Product Details

Product Information

Chemical Base

Polyurethane elastomer

Shelf Life

Twelve (12) months from the date of production, if it is stored in undamaged, original sealed packaging and if storage conditions are met.

Storage Conditions

Store in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C

Density

~1.2 kg/litre

Volatile organic compound (VOC) content

51.6 g/L

Technical Information

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)

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

Application Information

Ambient Air Temperature

+5°C to +40°C. Sealant should be installed when joint is at mid-range of its anticipated movement.

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) per 600ml foil pack	Joint width (mm)	Joint depth (mm)
6	10	10
4	15	10
3	20	10
2	25	12
1.3	30	15

Application steps

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®-11 FC adheres without primers and/or activators. However, for optimum adhesion and critical, high performance applications, such as on multi storey 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.
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 TOOLS

Clean all tools and application equipment immediately after use with Sika® Remover-208 and / or Sika® Thinner C. Once cured, hardened material can only be removed mechanically. For cleaning skin use Sika® Everbuild Wonder Wipes.