PU-322 is one component polyurethane construction sealant of high modulus. It is with high performance, construction-grade adhesive for bonding a number of different materials. Such as that bonding concrete, brick, marble, stone, wood, glass, aluminum, steel, PVC, and tile.  The Construction Adhesive is also can be used for repairing broken concrete, bonding wall blocks to caps, and attaching wood to concrete and masonry surfaces. 

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Typical Applications

●Water-proof sealing in Airport runway, bridge and tunnel joints, drainage pipe, etc.

● Bonding and sealing of concrete prefab, side fascia, stone and color steel plate.

● Bonding and sealing of dale such as metal plates, wood board, plaster tablet, and so on.

●Bonds pavers, caps, roofing, concrete, wood, tile, aluminum, foam, mirrors, and more

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Key Features

● High modulus and high elasticity, good sealing and water-proof property

● One component, convenient to apply, nonpoisonous and odorless 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, resistance to puncture, moldiness

● Excellent extrudability, easy to scratch sewing operation

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

●.Excellent extrusion, no-sag, easy construction.

● Paintable and polishable

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Technical Data Sheet

Main raw material: Polyurethane

Color:                     Black/white/gray, paste

Tack free time:        ＜3Hrs

Curing speed :        3~5mm/ 24hrs

Hardness:                35±5 Shore A

Elongation at Break:   ≥600%

Volatile content：         ≤4%

Tensile modulus：       ≤1.0Mpa

Application temperature: 5~35°C

Service temperature:    -40~80 °C

Temperature resistance: Up to 1-hour short time, 150 °C

Shelf life:                   9 months

 

∎Chemical Resistance

●PU-323 is excellently resistant to freshwater, saltwater, sewage water, and acids.

●Temporarily resistant to fuels, mineral oils, vegetable, and animal fats and oils.

●Not resistant to organic acids and caustic solutions or solvents.

●The above information is offered for general guidance only. For more professional questions, please consult MAXTECH service.

 

Packing Specification

●Cartridge       310ml

●Sausage        400ml

●Sausage        600ml

●Pail/Drum      240kg

 20pcs per box , 2 boxes per Carton

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Storage

When stored at 5~25°C, humidity ≤50%RH in the original unopened containers, this product has a usable life of 9 months from the date of production. Do not store at temp. over 25°C, humidity over 80%RH.

Transportation: moisture-proof, prevent the rain, prevent sunscreen, anti-high temperature, away from heat, handle with care, crush or collision is prohibited.

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∎Directions for Use

Tool: Manual or pneumatic plunger caulking gun

1. Cleaning: Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating.

2. For cartridge

   1. Cut the nozzle to give the required angle and bead size

   2. Pierce the membrane at the top of the cartridge and screw on the nozzle

   3. Place the cartridge in an applicator gun and squeeze the trigger with equal strength

3. For sausage

   1. Clip the end of the sausage and place in barrel gun

   2. Screw end cap and nozzle on to barrel gun

   3. Using the trigger extrude the sealant with equal strength

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∎Attention of operation

1. Choose this product, primer, activator, and other matching product, must have a bonding test before bonding the materials, to ensure that they have good compatibility. At the same time, before application, should guarantee that the sealant, primer, and activator are in the warranty period.

2. Please strictly according to the application process, any violation of the application operation may cause bonding failure. This product is innocuous after curing completely, but before curing, please avoids contacting with eyes and skin. In case of eyes and skin contact, wash immediately and thoroughly with soap and water. If the situation is serious, please go to see a doctor immediately.

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PU-322 is one excellent adhesion material adhesive. ODM & OEM are welcome. Welcome to talk with us.

Our missions: Make every customer satisfied with our products and services.

More information, TDS is here, please check.