Sikaflex TS Plus is a 1-part, moisture curing, polyurethane elastic tank and silo sealant. Provides a waterproof seal with good mechanical properties, is resistant to liquid manure, chemicals and remains elastic over a wide range of temperatures.

Uses:

Sikaflex TS Plus may only be used by experienced professionals.

• Designed for sealing steel containers built in sections such as enamelled steel or stainless steel tanks
• Sealing domestic sewage systems

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• Features & Benefits
• Surface Preparation
• Application Notes
• Limitations

Features & Benefits

   
• 1-part, moisture curing, polyurethane elastic tank and silo sealant
• Designed for sealing steel containers built in sections such as enamelled steel or stainless steel tanks
• Also suitable for sealing domestic sewage systems
• Resistant to domestic sewage and liquid manure
• Chemical resistant
• Good mechanical properties
• High modulus
• Movement capability of ±15 %

Surface Preparation

The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles.

For optimum adhesion and joint durability, the following substrate priming (and/or pre-treatment) procedures must be followed:

Non-Porous Substrates

Enamelled steel, aluminium, anodised aluminium, stainless steel, 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 sealing, allow a waiting time of > 15 minutes (< 6 hours)

Consult the tank manufacturer's instructions for their specific preparation and priming recommendations.

Other metals, such as copper, brass and titanium-zinc:

• Clean and pre-treat using Sika Aktivator-205 with a clean cloth
• After a waiting time of > 15 minutes (< 6 hours), apply Sika Primer-3 N by brush
• Before sealing, allow a waiting time of > 30 minutes (< 8 hours)

PVC Substrates:

• Must be cleaned and pre-treated using Sika Primer-215 applied with a brush
• Before sealing, allow a waiting time of > 30 minutes (< 8 hours)

Porous Substrates:

Concrete, aerated concrete and cement-based renders, mortars and bricks:

• Prime surface using Sika Primer-3 N applied by brush
• Before sealing, allow a waiting time of > 30 minutes (< 8 hours)

Adhesion tests on project specific substrates must be performed and procedures agreed with all parties before full project application. 

Note: Primers and activators are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long term adhesion performance of the sealed joint. Contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for additional information.

Application Notes

Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

Masking

• It is recommended to use masking tape where neat or exact joint lines are required
• Remove the tape within the skinning time after finishing

Joint Backing

• After the required substrate preparation, insert a suitable backing rod to the required depth

Priming

• If required, prime the joint surfaces as recommended in substrate preparation
• Avoid excessive application of primer to avoid causing puddles at the base of the joint

Application:

• Sikaflex TS Plus is supplied ready to use
• For lap joints (e.g. in enamelled steel containers), consult the tank manufacturer's instructions
• Prepare the end of the foil pack, insert into the sealant gun and fit the nozzle
• Extrude Sikaflex TS Plus into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment

Cleaning Of Tools

• Clean all tools and application equipment immediately after use with Sika Thinner C
• Hardened material can only be removed mechanically
• For cleaning skin, use Cleaning Wipes

Limitations

• Corrosion protection is dependent on the thickness of the sealant layer
• For lap joints, i.e. on enamelled steel, Sikaflex TS Plus provides effective corrosion protection with a layer thickness ≥ 8 mm (in conjunction with the appropriate adhesion promoter and/or primer)
• For butt joints, i.e. on concrete structures, Sikaflex TS Plus provides effective corrosion protection with a layer thickness ≥ 8 mm
• The performance of the sealant is dependent on the construction of the container, the area in which the sealant is applied and the correct preparation of the substrate
• Not resistant to alcohols, concentrated organic acids, concentrated alkalis, concentrated acids, and chlorinated and aromatic hydrocarbons
• To be chemically resistant the sealant must be fully cured (final mechanical properties achieved)
• Chemical resistance is dependent on the chemicals, their concentration and temperature
• Exceeding the service temperatures could cause a depolymerisation of the sealant
• Resistant to chlorine for disinfection purposes only. Contact tank supplier for guidelines and detailed conditions
• Sikaflex TS Plus can be over-painted with most conventional facade paint coating systems. However, paints must first be tested to ensure compatibility by carrying out preliminary trials (e.g. according to ISO technical paper: Paintability and Paint Compatibility of Sealants). Optimum results are obtained when the sealant is allowed to fully cure first. Note: non-flexible paint systems may impair the elasticity of the sealant and lead to cracking of the paint coating. Depending on type of paint used, plasticiser migration may occur causing the paint to become surface ‘tacky’
• Colour variations may occur due to the exposure in service to chemicals, high temperatures and/or UV radiation (especially with white colour shade). This effect is aesthetic and does not adversely influence the technical performance or durability of the product
• Do not use Sikaflex TS Plus on natural stone
• Do not use on bituminous substrates, natural rubber, EPDM rubber or on any building materials which might leach oils, plasticisers or solvents that could degrade the sealant
• Do not use Sikaflex TS Plus to seal joints in and around swimming pools
• Do not expose uncured Sikaflex TS Plus to alcohol containing products as this may interfere with the curing reaction