Supex PU 25 Sealant

Product Description

Supex PU 25  by Anagha Engineers -PU Sealant manufacturer,  is a high-quality multipurpose non-sag one-part Polyurethane sealant   that   cures   on   exposure   to atmospheric moisture to form a durable elastomer. Supex PU 25 has been especially developed for Indian subtropical conditions. It is most suitable in high temperature & extreme humid conditions. In most cases, usage in Bonding & sealing for Bus Body, Rail Coaches as well as other automotive applications.

Characteristics Of Supex PU 25 PU Sealant

  • Firstly, bonds well to a wide variety of substrates.
  • Excellent resistance to many chemicals.
  •  Overpaintable and has non sag consistency.
  • Especially developed for automotive and bus industry, bodywork, container applications.
  • Suitable for making permanent elastic seals of high adhesive strength.
  • Good resistance to aging, weathering – thus, suitable for indoor and outdoor.
  • Vibration and sound damping properties.
  • Lastly, sandable & over-paintable with many water, solvent based paints

Where Can It Be Used?

  • Sealing & Bonding in automotive industry
  • General coach-building, caravans & motorhomes assembly as well as repairing.
  • Bus Body & truck industries.
  • Thermal & acoustic insulation technology in refrigeration, air-conditioning.
  • Suitable substrate materials include timber, metals, particularly aluminium , sheet steel , metal primers and paint coatings , ceramic materials as well as plastics.
  • Lastly. for elastic bonding to untreated metals & plastics the use of Primers is recommended.

How To Apply Supex PU 25 PU Sealant

  • Before application, make sure that the surface is free from dust and grease. This will otherwise inhibit the process of application of the sealant.
  • We recommend that you conduct a preliminary compatibility test before proceeding to use the sealant for its desired purpose.
  • Next, apply the sealant evenly. If required, use masking tape to mark the areas of application. Before it cures, make sure to remove the tape.
  • The ratio of the joint width to the depth ratio should be 2:1.
  • Further, it is recommended to use a backup material if you feel like joint adjustment is required.
  • You may use backer rods and bond breakers to facilitate the adhesion. It should adhere only to two surfaces of the joint.
  • Take care to follow the standard industrial application procedures. Clean the fun after use before giving the sealant time to cure. 

Packing , Shelf Life

Colour: Black as well as White

Packaging: 600ml sausage

Shelf Life : 12 months from Date of Manufacture. Furthermore, store away from Sunlight and Between 5-30 C. 

What is a Polyurethane sealant used for?
PU sealant is an organic material used for sealing and bonding. Its properties like resilence, flexibility, bond strength, UV resistance, hardness etc can be modified as per aplication requirements. 
Sealing : It is used in joints between prefabricated building elements, in joints of rainwater collection pipes on roofs and in rain gutters, insulating joints between precast concrete blocks and sealing of joints of aluminum pipes in HVAC (ventilation) sector.
Bonding: Especially in automotive industry used in the manufacture of vehicles, in the repair of auto glass, in the sealing of metal structures such as containers and trucks, in the manufacture and installation of air conditioning in HVAC systems, in order to reduce vibration and provide sealing in metal sheet joints. 



Technical Data Sheet

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