R&A HM FC – windshield adhesive/sealant

Aerin Group OÜ offers R&A HM FC adhesive for windshield, side and rear windows of buses, trucks and passenger cars.

R&A HM FC - windshield adhesive/sealant

R&A HM FC is one-part high modulus and high viscosity polyurethane sealant. It is a quick setting and air moisture curing sealant. It provides a permanent, elastic and high strength bonding. The sealant has a particularly good resistance to ageing and harsh weather.


R&A HM FC is recommended for the bonding and sealing of the windshield, side and rear windows in the automotive and transportation tool manufacturer, also could be used in coach glass joint smooth with excellent aspects. It provides an excellent adhesion on materials like glass, ceramic, painted or naked metal (aluminium, steel, etc.), and therefore can also be used as bonding sealant in different kinds of applications.


Colour Black
Appearance Thixotropic paste / High viscosity
Density at 20C Ca 1.25 g/ml
Application temperature 5 to 35 ℃
Curing speed 4 mm / 24 hours
Shore A Hardness ≥55 (ISO0868 – 3 seconds)
Tensile strength (DIN 53504) Ca 9.0 Mpa (after 7 days)
Shearing resistance (FORD DELTA) Ca 4.5 Mpa (after 7 days)
Tearing resistance (DIN 53515) >17 N/mm
Elongation at break (DIN 53504) >400%
Resistance to solvents and hydrocarbons Moderate
Acid and base resistance Good
Water and salt spray resistance Excellent
UV resistance Good



Substrate preparation
The substrates to be assembled must be dry, clean, free of oil and other contaminants that could adversely affect the bonding performance. The substrates to be assembled are first treated with the cleaner, when the cleaner is dry, apply the activator. When using cleaner or activator, keep away from all sources of ignition and carefully follow the safety and the handling instructions given by the manufacturer or supplier.
When the activator is completely dry, R&A HM FC to be applied with a hand or pneumatic gun to one substrate and pressed it on the second substrate before it is skinned. Do not apply it at temperatures under 5℃. In cold weather, store the «sausages»/cartridges at 20℃ before use. Do not apply silicones or in presence of polymerized silicones or hybrid sealants (MS or SPUR).
Tools should be cleaned with MEK or acetone before curing. After curing, mechanical cleaning is necessary.


12 months in the original cartridges and «sausages». Hermetically store the products between +5℃ and +25℃


600 ml «sausage»
310 ml cartridge


Not classified as hazardous. Read the material safety data sheet before use.
Caution! Contains isocyanates. May cause sensitisation by inhalation and skin contact.

Remarks: the present data sheet deals with general information. It is necessary for the user to check beforehand the compatibility of the materials and the working techniques. Our products are of constant and superior quality and therefore cannot be blamed for discrepancies due to their use or reaction that are of exclusive responsibility to the user. Our technical service is at the disposal of our clients for any additional information.


E-mail: info@aerin.ee

We offer cooperation in the supply of R&A at wholesale prices:

  • workshops
  • spare parts stores
  • companies which have their own fleet

E-mail: wholesale@aeringroup.com