Top Best 653 Polyurethane Sealant for caravans & motorhomes

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Product Details
 Item  Value
 Main material Polyurethane
 CAS number
 Color Black or grey or white
 Sagging Properties(mm) ≤1
 Specific gravity ( g/cm3) 1.35 ± 0.05
 Elongation (%) ≥600
 Application temperature range 5°C ~ 35°C
 Service temperature range -30°C~80°C
 Elastic recovery(%) ≥80
 Extrudability   (ml/min) 80
 Volatile content(%) ≤4
Stretch modulus (Mpa)


1. Polyurethane sealant description
   Top best-653 is a kind of one-component polyurethane sealant and after reacting with moisture it will become one kind of permanently elastic material. And it can strongly stick to most traditional building materials.

2. Application areas
    It can be used for sealing and bonding in all kinds of building joints, including perimeter caulking of doors and windows.

3. Package

    300ml/tube, 48 tubes/carton; 600ml/tube, 20tubes/carton.

4. Storage

    Stored in a dry and cool condition.

5. Shelf life

    9 months in original packing.


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Q1: Do you have laboratory in company?

A: Yes, we have 2 laboratory centers which conduct all deferent tests as customer required, like properties, life time, UV, etc.

Q2: Is the sample free?

A: The sample is free, however please provide the courier account or undertake the courier cost for delivering.

Q3: What is the delivery time? 

A: Delivery Time  

Sample Order: 1-3 days after receipt of the full payment. 

Stock Order: 3-7days after receipt of the full payment.

OEM Order: 12-20days after receipt of the deposit. 

Q4: What is the shipping port?

A: Shanghai port, China.

Q5: What is the payment term?

A: T/T or L/C

Q6: What about your after-sales services?    

A: 1 year warranty for all kinds of products; 

If you find any defective accessories, we will give you new part for free in next order.

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