Waterproof and Stain Repellent Concrete Sealer

FOB Price: US $0.5 - 3 / Piece Get Latest Price
Min.Order Quantity: 2000 Piece/Pieces
Supply Ability: 1000000 Ton/Tons per Year
Port: Shanghai
Payment Terms: L/C,T/T
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Quick Details

Place of Origin:
Shanghai China (Mainland)
Other Adhesives
Main Raw Material:
Construction,Fiber & Garment,Packing,Transportation,Woodworking
Brand Name:
Model Number:
Sagging properties(mm):
Pollution properties:

Packaging & Delivery

Packaging Detail: 20 kilograms
Delivery Detail: two weeks after receiving the payment


2.Excellent waterproof property
5.Concrete waterproof sealer

Polyurethane Coating PU831


Detailed Product Description


Polyurethane concrete waterproof sealer applied on substrates, to form a firm, soft and seamless sealing film by chemical reaction with moisture in the air



1. Pure polyurethane sealant,environment-friendly.

2. Contains no asphalt, tar or any solvents, no harm to construction personnel.

3. Free from pollution to the environment, No toxity after curing, No corrosion to base material, High solid content.  

4. One component, convenient for construction, No need of mixing, surplus products should be kept in good airproof package.

5. Efficient: High strength and elasticity, resistant to acid and alkali, excellent bonding effect with concrete, tile and other substrates.

6. Cost-effectice: the coating expands a little after curing, which means it turns a little bit thicker after curing.

7. All items tested exceeds nation standard GB/T19250-2003



1. Waterproofing for basement, kitchen, bathroom, underground tunnel, deep wells structure and normal decoration.

2. Leak-proofing and penetrating-proofing of Reservoirs, water towers, swimming-pool, For Bath-pool, fountain pool, impounding reservoir, sewage cleaning pool and irrigation channel.

3. Used for preventing of leaking, corrosion and penetrating for water tanks, underground


4. Bonding and moisture-proofing of various floor tiles, marble ,asbestos plank and so on


Data Table


Model Number

PU 831





Sagging properties(mm)


Tensile strength(Mpa)


Elongation at break(%)


solid content(%)


Touch dry time(h)


Pollution properties


Application temperature(°C)


Shelf life(month)






















The substrate should be smooth, solid, clean, dry without sharp concave and convex points, honeycomb, pocking marks, peeling, free of bulges, greasy before application. it is better coating 2 times with scraper. When the first coat isn’t sticky, the second coat can be applied, the first layer is recommended being applied in thinner layer for better releasing gas generated during reaction. The second coat should be applied in different direction to the first coat. The optimal coating rate is 2.0kg/m² for thickness of 1.5mm.


Attention of operation

Wear suitable protective clothing, gloves and eye/face Protection. After contact with skin, wash immediately with plenty of water and soap. In case of accident or if you feel unwell, seek medical advice immediately


Package and Storage


 Package                                                                Storage  

 310ml cartridge, 20pcs/carton                                   Keep in cool and ventilative place

400ml/600ml sausage, 20pcs/carton                           Temperature≤25°C, humidity≤50%RH

Color: Black/Grey                                                      Shelf life: 9 months




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Shanghai Sepuna Chemical Co.,Ltd is a subcompany of PUNADE INTERNATIONAL GROUP, Sepuna is a professional industry adhesive supplier ,manufacturing polyurethane/silicon/epoxy sealant and adhesive,has nearly 10 years history.
In 2005 Sepuna introduced PUNADE technology from Switzerland.
Via the ISO90001:2000 certification.
In 2013 Sepuna introduce Drawing Machine technology and has put it into producing formally now.

Sepuna has professional factory which area is 5.000 squaremeters,and has ... View detail

Basic Information

Product/Service (We Sell): Polyurethane Adhesive,Polyurethane Sealant,Epoxy Adhesive,Silicone Adhesive  
Brands: PUNADE  
Number of Employees: 101 - 200 People  

Trade & Market

Main Markets: Central America
South Asia
Northern Europe
Domestic Market
Eastern Asia
Southern Europe
Southeast Asia
Mid East
Western Europe
Eastern Europe
South America
North America
Total Annual Sales Volume: US$50 Million - US$100 Million  
Export Percentage: 81% - 90%  

Factory Information

Factory Size (Sq.meters): 3,000-5,000 square meters  
Factory Location: Shanghai Minhang District  
Number of Production Lines: 10  
Number of R&D Staff: 11 - 20 People  
Number of QC Staff: 5 - 10 People  
Contract Manufacturing: OEM Service Offered   Design Service Offered   Buyer Label Offered  

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China (Mainland) | Manufacturer, Trading Company | Contact Details
Experience: Established 2010 , 10 years OEM

Communicate with Supplier:

Ms. Gina Wang
Ms. Gina Wang:
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