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PU-30 Low Modolus High Performance Resistance Weather proof  Construction Polyurethane Sealant


Product Description


PU-30 is a one-component, moisture curing, polyurethane based sealant that possesses a wide temperature range capacity. PU-30 is a low modulus joint sealant that is designed for construction and expansion joints with high movement capacity in building and civil engineering construction. Uses include: between pre-cast concrete elements, joints in cantilever and flat roofs, bridges and parapets, underpasses and tunnels and lightweight building materials. Advantages include ready for use no site mixing, excellent adhesion to concrete, brick, natural and artificial stone, glass, ceramics, aluminium, stainless steel and powder-coated metals. PU-30 low modulus, one-part polyurethane sealant will not sag in both vertical and overhead joints or when installed into vertical joints up to 35 mm wide. It has excellent aging and weathering properties.


Key Features

* Low modulus and high elasticity, good sealing and water-proof property

* One component, convenient to apply, non poisonous and odor less after curing, green and environmental

* The new and used sealant has good compatibility, easy to repair

* Moisture-cure, no cracking, no volume shrinkage after curing

* Excellent aging, water and oil resistance, resist to puncture, moldiness

* Excellent extrudability, easy to scratch sewing operation

* Bonding well with many substrates, no corrosion and pollution to substrate


Typical Applications

Sealing of expansion and settlement joint of house building, plaza, road, airport runway, anti- all, bridges and tunnels, building doors and windows etc

Sealing of upstream face crack of drainage pipeline, drains, reservoirs, sewage pipes, tanks, silos etc

Sealing of through holes on various wall and at floor concrete

Sealing of joints of prefab, side fascia, stone and color steel plate, epoxy floor etc.

Packing Specification

●Tube        310ml

●Sausage      600ml

●Pail/Drum     20kg/drum, 230kg/drum

20pcs per box; 20kg pail, 36 pails per pallet


Directions for Use

 Cleaning: The substrate surface must be solid, dry and be clean.Such as no dust, grease, asphalt, tar, paint, wax, rust, water repellent, curing agent, isolating agent and film. Surface cleaning can be dealt with by removing, cutting, grinding, cleaning, blowing, and so on.

 Operation: Put the sealant into the operating tool,then injecting it into the gap.

 Reservation gap: The construction joint will expand as the temperature change,so the surface of the sealant should be lower than 2mm of the pavement after construction.

 About maintenance time: At the standard state, the maintenance time is about 5 hours. It depends on the actual construction conditions. The standard state is that the temperature is 23±2,and the humidity is 55 ± 5%RH.

 Operation Methods: Because the packing is different, the construction methods and tools are slightly different. The specific construction method.



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Low Modulus High Performance Construction Polyurethane Sealant




    Black/Grey/White Paste

    Uniform Sticky Liquid

    Density (g/cm³)


    Tack Free Time (Hr)


    Tensile modulus(MPa)


    Hardness (Shore A)


    Curing Speed (mm/24h)

    3 ~ 5

    Elongation at Break  (%)


    Solid Content  (%)


    Operation Temperature ( ℃)

    5-35 ℃

    Service Temperature ( ℃)

    -40~+80 ℃

    Shelf Life (Month)



    Implementation of standards: JT/T589-2004


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