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PU1635 Urethane Adhesive Sealant for Auto/Car /Bus Glass for direct glazing


PU1635 is a Primerless, Odorless one- component direct glazing adhesive. It is easy to apply with a manual or automatic gun and cures with atmospheric moisture. PU1636 provides a proper tack-free time and ensures a safe strength after curing even under cold temperature.


PU1635 is manufactured in accordance with ISO 9001/14001 quality assurance system and with the responsible care program.


∎Product Benefits




●Excellent thixotropy, non-sag properties

●Fast adhesion to substrates

●Cold application

●One-component formulation

●Automotive OEM quality

●No oil permeated


∎Areas of Application

PU1635 is suitable for direct-glazing applications in the Automotive Glass Replacement business.


● This product is to be used by professional experienced users only. If this product is used for other applications than Automotive Glass Replacement, test with current substrates and conditions have to be performed to ensure adhesion and material compatibility.

∎Curing DegreeGraph

●PU1635 cures by reaction with atmospheric moisture. The curing speed lower at lower humidity or lower temperature.


∎Chemical Resistance

PU1635 is excellent resistant to fresh water, 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.


∎Direction for use

Remove dust, oil and water from the surface of substrates.

 Application environment temperature 5~35℃, humidity 50~70%RH. When the temperature below 5℃, recommended place products in the environment of 30~40℃ for 1H (No more than 3H).

 For Construction method, please refer to MAXTECH construction description or consult technical personnel.

 For required modification, use scraper / rigid foam /soap-water to smooth.

● Activator and primer are not required.



Keep away from children.

● Avoid contacting with skin and eyes. For skin contact, remove the sealant by cloth, wash skin thoroughly with soap and water. For eye contact, hold eyelids apart and flush thoroughly with water, contact physician.


∎Packing Specification

●Cartridge       310ml

●Sausage        400ml

●Sausage        600ml

●Pail/Drum      240kg

 20pcs per box , 2 boxes per Carton.


∎Transport &Storage

● Transport: Keep the sealed product away from moisture, the sun, high temperature and avoid collisions.

Storage: Keep the sealed product into cool, dry place.

Storage temperature: 5~25℃. Humidity: ≤50%RH.

Cartridge and Sausage :9 month. Pail/Drum:6 month.

PU1635 Urethane Adhesive Sealant for Auto/Car /Bus Glass for direct glazing

Color: Black
Price Options
Odorless windshield
odorless pu. environmental sealant, high quality sealant
$2.00every week until canceled


    Chemical base

    1-C polyurethane

    Colour (Appearance)


    Cure mechanism

    Moisture curing

    Density (g/cm³) (GB/T 13477.2)

    1.4g/cm³ approx.

    Non-sag properties(GB/T 13477.6)

    Very good

    Application temperature

    5°C to 35ºC

    Tack-free time1 (GB/T 13477.5)

    55 min approx.

    Open time1

    40 min approx.

    Curing speed (HG/T 4363)

    see diagram

    Shore A hardness (GB/T 531.1)

    50~60 approx.

    Tensile strength (GB/T 528)

    5 N/mm2 approx.

    Elongation at break (GB/T 528 )

    430% approx

    Tear propagation resistance (GB/T 529)

    8.0N/mm2  approx

    Extrudadbility (ml/min)


    Tensile-shear strength(MPa)GB/T 7124

    3.0 N/mm2  approx.

    Service temperature

    -40°C to 90ºC

    Shelf life (storage below 25°C) (CQP 016-1)

    9 months

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