SpECseal PU40

SpECseal PU40 is designed for a wide range of applications in the construction industry, providing effective sealing and bonding solutions. Typical uses include:
• Versatile sealing and bonding for building industry applications.
• Effective sealing of shrinking joints in concrete floors.
• Secure bonding of roof tiles.
• Diverse construction sector bonding solutions.
• Robust elastic bonding for vibrating constructions.
• Structural bonding tailored for vibrational stability.

SpECseal PU40 offers numerous advantages that enhance its performance and application versatility in the construction industry. Its unique properties make it an exceptional choice for a variety of sealing and bonding tasks. Key advantages include:
• Highly resilient with excellent recovery characteristics, elongation at break of 150%.
• Provides a permanent and uniform watertight seal.
• Excellent adhesion to most building substrates without the need for primer on new substrates.
• Compatible with water-based paints, allowing for overpainting options.
• Non-toxic formulation suitable for use in potable water reservoirs and swimming pools.
• Easy to apply as a one-component sealant, eliminating mixing requirements.
• Good chemical resistance against sewage, sabkha, mineral acids, and alkalis.
• High curing speed of 3mm/day at 23°C and 50% R.H.

SpECseal PU40 is engineered to meet high-performance standards, ensuring optimal versatility and durability in various construction applications:

Shore A Hardness	40 ± 5 (ASTM D 2240)
Modulus at 100%	0.4 MPa
Elongation	150% (ISO 8339)
Solid Content	100%
Movement Accommodation Factor	25%
Temperature Resistance	0 to 90°C
Consistency	Thixotropic
Specific Gravity @ 20°C	1.50
Curing Speed	3mm/day (23°C %50 R.H.)
Skin Formation Time	6 hours
Ultraviolet Light Resistance	Good
Chemical Resistance	Sewage, sabkha, mineral acids & alkalis (Medium resistance to dilute acids and bases; Excellent in salt water)
Colors Available	Black, grey, white, beige, ivory (Other colors subject to minimum quantity)

Application Instructions
Joint Preparation:
To ensure optimal adhesion, the joint edges must be clean, dry, and free from oil, loose particles, cement laitance, and other contaminants. A thorough wire brushing, grinding, sandblasting, or solvent cleaning may be required to expose a clean and sound substrate. For glazed surfaces like ceramic or terrazzo tiles, the glaze should be removed by abrading with sandpaper or a wire brush. It is recommended that concrete is fully cured (4 weeks) before applying the sealant, and the use of SpECtop Primer EP121 is advised for best results.
Coverage:
One 600 ml sausage will fill approximately 6 linear meters of a 10mm x 10mm joint. For larger joints, a width-to-depth ratio of 2:1 should be maintained.
Back-Up Material:
A bond-breaking backing rod, such as SpECcord, shall be inserted into all movement joints to avoid three-sided adhesion. In cases where the depth does not allow for the application of a backing rod, a bond-breaking tape may be used.
Application Process:
SpECseal PU40 is provided in a ready-to-use self-contained sausage, which can be loaded onto a barrel gun. Start extruding the sealant into the joint firmly, maintaining an even pressure on the trigger. For vertical joints, begin extruding from the bottom and continue to the top. After installation, use a suitable rounded tool to achieve a smooth hourglass profile. Note: Do not use soapy water solution for tooling.
Equipment Cleaning:
SpECseal PU40 should be removed immediately from tools using solvent (white spirit) before curing. Cured material can only be removed by mechanical means.
Application Temperature Range:
The sealant can be applied in temperatures ranging from +5°C to +40°C.

SpECseal PU40 is supplied in convenient packaging for easy application:
SpECseal PU40 is available in 600 ml sausages, with 20 sausages per box and 96 boxes per pallet.