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Professional adhesive and sealant products, industrial and building special materials and compounds

Sealant ADHESION PU816T is an elastic, one component, self-leveling polyurethane sealant specifically developed to be used as a pourable floor joint sealant in applications where a high chemical resistance to fuels, oils and hydrocarbons is requested. It cures under the influence of atmospheric moisture to form a permanently elastic sealant with excellent adhesive properties and resistance to ageing and weathering.


Surface preparation:

Surfaces must be clean, dry, free of water, oil, grease or rust and of sound quality. Remove all loose particles or residues with a jet of compressed air, sandpaper or hard brush. Glass, metal and other non-porous surfaces must be free of any coatings and wiped clean with solvent. Pre-cast panels using form-release agents other than polyethylene film must be sandblasted or mechanically abraded and dust free. Porous substrates: concrete, cementitious renders, mortars, brick, etc. have to be primed with Primer ADHESION 110 by using a brush. Before sealing allow a flash off time of at least 15 min.


Recommended application temperatures: 15°-25°C. For easier use or cold weather application we recommend the material to be stored at approximately 25°C prior to use.

In order to guarantee free movement of sealant in joints, it is imperative that the sealant does not adhere to the bottom of the joint, therefore for correct joint making a closed-cell polyethylene bead (joint backing rod) is to be placed at the proper depth.

Apply appropriate primer to joint sides and observe waiting time to avoid that trapped solvent, in condition of rising temperature, can blow bubbles in the uncured sealant. For best performance, sealant should be gunned into joint when the joint slot is at mid-point of its designed expansion and contraction. Firmly extrude sealant into the joint making sure that it is in full contact with the sides of the joint and with the backing rod at the bottom. Keep the nozzle in the sealant, continue on with a steady flow of sealant preceding the nozzle to avoid air entrapment. Avoid overlapping of sealant to eliminate entrapment of air.

All joints must be properly designed and dimensioned by the specifier and the main contractor in accordance with the relevant standards, materials and technical values.

The recessed joint design protects the sealant against mechanical loads. Fill the joint with ADHESION PU816Т 2.0 mm below the surface of the joint sides.

Finishing indications and limitations:

As sealant is self-levelling, it doesn’t need to be tooled. Masking tape should not be used, just paying attention to the product not being put in excess respect to the joint volume capacity.

ADHESION PU816Т is resistant to chemical spillage by: dilute acids, dilute alkalis, aviation fuels, diesel fuels, lubricant oils, petrol, kerosene, cleansing agents, sea water, lime water.

Avoid exposure to high levels of chlorine (avoid to seal joints in chlorinated swimming pools). Avoid contact with alcohol and other solvent cleaners during cure. Do not apply when moisture-vapour-transmission condition exists from the substrate as this can cause bubbling within the sealant.

The ultimate performance of ADHESION PU816Т depends on good joint design and proper application with joint surfaces properly prepared. Do not cure in the presence of curing silicone sealants.


ADHESION PU816Т can be stored for 12 months in its original packaging (unopened container) at 10°-25°C in a cool, dry place. The storage temperature should not exceed 25°C for extended periods of time. Keep away from wet areas, direct sunlight and heat sources.


Alu- bags 600 ml: 20 bags per box


Technical certificate suitability of materials and products for use in construction TC from 02.09.2016

Certified according to: ISO 11600/F/25LM and DIN 18540/F

Certified according to BS 6920-1:2000 - Suitability for use in contact with water for human consumption

Conform to: ASTM 920, ASTM 793-91 and DIN 11431

Matches Uniform sanitary and epidemiological and hygienic requirements for goods subject to sanitary-and-epidemiologic supervision (control), approved. Commission Decision of the Customs Union on 28.05.2010 №299. Chapter II Section 3 "Requirements for materials, reagents and equipment used for water treatment and purification" (Minutes of the Research 14.07.2015 №0115 / 5305 / 06-02).

• Movement and connection joints in floors 

• Indoor and outdoor applications for pedestrian and traffic areas (petrol station, decks, car parks) 

• In warehouses and production areas 

• Joints in waste water and sewage treatment plants (preliminary advice of information to technical department is requested) 

• Floor joints in tunnel construction 

• Floor joints in working areas and runaways of airports 

  •  chemically and oil-resistant 

    polyurethane single component.

  •  Elastic in a wide range of temperatures.

    • No shrinkage.

    • Without bitumen.

    • Thixotropic consistency.

    • Not sticky / does not stain after polymerization.

    • Easy application with a gun, can be easily smoothed and leveled with a spatula.

    • Good adhesion to all typical building materials.

    • Fast application and cure time.

    • Good resistance to aging, weathering, hydrocarbons, fuels, oils, detergents, sea and lime water and alkaline solutions.

    • It is painted with many water-based and solvent-based paints (we recommend preliminary testing of the composition).

    • Provides a long service life of the adhesive joint with a deformation of 25%.

Appearance - Semi-liquid

Colour - Grey

Chemical nature - Polyurethane

Curing Mechanism - Moisture-curing

Shore A (23°C and 50% r.h; DIN 53505) 26

Density [g/cc] (23°C and 50% r.h.) 1,48 ± 0,02

Tack-free time [min] (23°C and 50% r.h.) 60-80

Elastic modulus at 100%(ISO 37 DIN 53504) [N/mm2] ≥ 0.4

Tensile strength (ISO 37 DIN 53504)[N/mm ] ≥ 1.8

Elongation (ISO 37 DIN 53504)[%] ≥ 750

Application temperature [°C] from +5 to +40

Temperature Resistance [°C] -40/+90, for short period up 120