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Quick Details

  • CAS No.: 9009-54-5
  • Other Names: Polyurethane Joint Sealant
  • MF: CH3H8N2O
  • EINECS No.: 210-898-8
  • Place of Origin: Jiangsu, China (Mainland)
  • Classification: Other Adhesives
  • Main Raw Material: Polyurethane
  • Usage: Construction, Transportation
  • Brand Name: SEPNA
  • Model Number: PU820
  • Type: One Component
  • Product name: Polyurethane joint sealant
  • Model: PU820
  • Color: grey (cement color)
  • Welcome: OEM inquiry with your private label
  • Property: Sealing, filling jonts and waterproof
  • Certificate: CE,SGS,ISO9001:2000,MSDS,UL,ROHS
  • Delivery time: fastest shipping 3~7days
  • fastest shipping 3~7days: 600ml sausage or 1kg tin
  • Key words: CE certificated excellent adhesion

Packaging & Delivery

Packaging Details 1. 600ml sausage,20pcs/carton,CTN size:375*255*205mm,GW.: 16.3kg,NW.:15.6kg
2. 20kg/bucket, size 300*340mm,GW.:21.3 NW.: 20kg
3. 230kg/drum, Size 660*960mm,GW.:252kg NW.: 230kg
Delivery Time Shipped in 3-7 days since receive PO and deposit

SEPNA grey sealer ISO9001 and CE certificated excellent adhesion to different construction materials


Product Description


SEPNA grey sealer ISO9001 and CE certificated excellent adhesion to different construction materials

Product Description


One component polyurethane joint sealant is a durable elasticity moisture curing polyurethane polymer based road joint filling material. It is widely applied in filling road joints for the excellent properties and easy application

Key Features

1. One component, very easy for application, free solvent, non-toxic odorless after curing, environment-friendly

2. Self-leveling, excellent flowability, easy to scratch sewing operation

3. Durable flexibility, no crack, excellent sealing and waterproofing

4. High displacement, fall off, suitable for sealing kinds of concrete road

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

6. Excellent water resistant, oil resistant, acid and alkali resistant, resistance to puncture

Typical Applications
1. Suitable for sealing and filling of expansion joints and settlement joints of airport runway, highway, building roof, underground parking, storage yard, industrial floors, driveways, loading docks and basement
2. Crack repairing of highway, plaza, roof, bridge and epoxy floor etc.
3. Repair all kinds of concrete road surface


Technical Data Table

Main raw material-----Polyurethane 
AppearanceVisual inspectiongrey, Homogeneous paste


Flow abilitymmSelf-leveling
Solid content%≥98
Surface dry timehour≤3
Tack free timehour6~16
Fully cured timehour≤24
Elastic recover rate%≥90
Elongation at break%≥900
Application temperature°C5~35
Service temperature°C-40~+80
Shelf lifemonth6

Application Points

1. Base surface requirement: dry, clean and non-pollution

2. Application tools: cutting machine, blower, joint filling machine, brush, shovel knife etc.

Application methods

1. Construction joint cutting: use the cutting machine to cut construction joint according to the designing and Programming, clean the dust and debris in the joint by the tools such as blower, brush and shovel knife. And make joint be dry completely

2. Backer rod installation: slightly install the polyethylene strip backer rod which the size shold be larger than the construction joint, depth designed according to the application condition.

3. Application:

From metal bucket and drum, installation the sealant into the joint filling machine, put the sealant pouring hose deep to the bottom of construction joint, then inject the sealant into the construction joint. 

4. Reserve gap: the construction joint will be expanding or contracting with the changing temperature, therefore, after application, the sealant should be installed lower than the concrete surface. 2-3mm in summer, 1-2mm in winter

5. Curing to tack free time, about 6 hours in summer ,12 hours in winter .


Attention of operation

1. The sealant should be guaranteed in the warranty period before application.

  2. This product non-toxic after curing completely, but before curing, please keep it away from eyes and  skin. If touch it with eyes and skin, wash immediately and thoroughly with soap and water. If feel uncomfortable, please go to hospital timely.

Packaging & Shipping

20kg/metal bucket, 230kg/Drum, 600ml/Sausage,20 pcs per carton


 Transportation: protect the products from stamp,rain,high temperature and heat souce;carefully and slightly move and forbid the products to squeeze and crash



Our Services



Q: May I know your company?

A: Sure! Suzhou Sepna is only one China manufacturer supplying self leveling polyurethane joint sealant.We mainly focus on researching of one component polyurethane joint sealant and one component polyurethane coating for large construction projects.

Q: What's your delivery time?

A:  Normally, the delivery time of sample order is 3-7days 

      Bulk order is 10 days after received the PO and deposit

Q: Can I get samples?

A: YES! Usually one piece 600ml Sausage or 1kg tin free sample supplied for your quality check.

 Three ways to get free samples below

 1. Supply us your import express account DHL/Fedex for sample shipping

 2. You can inform your DHL/Fedex to pick up the sample from Sepna factory.

 3. Pay  express fee to Sepna company by Paypal or TT, we will arrange the sample delivery on our      side.


Q: What is your MOQ?

A:  Our MOQ is 1000kg or 2000pcs 600ml Sausages.


Q: Can you do OEM lable for the products?

A: YES, the OEM service such as buyer labels are accepted as long as your order reach our standard amount.


Any more questions, please contact us anytime! +86-(0)512 63956665




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