Polyurethane Joint Sealant | Boss PU LM | Boss Sealant Mumbai

Basic Price= Rs 290 per 600 ml

Add : Freight  and 18% GST

Packing: 20 pcs in a cartoon

Colour: Concrete grey

Boss Low Modulus Polyurethane joint Sealant  

BOSS PU LM Construction is a high quality, elastic, 1-component sealant based on polyurethane. Polyurethane joint sealant is called by various other names including gap sealer,  joint sealing compound, cement gap filler, polyurethane mastic, floor joint sealant, expansion joint sealant, concrete gap sealant, concrete polyurethane sealant, joint sealant for concrete slabs, sealant material for concrete joints, PU joint sealant, grey polyurethane sealant, isolation joint sealant, concrete floor joint sealant, white polyurethane sealant, Wall joint sealant and etc.

Properties of polyurethane sealant

  • Very easy to apply
  • Permanently elastic after curing
  • Very good adhesion on many materials
  • Excellent resistance to UV radiation
  • Excellent resistance to many chemicals

Uses of Boss PU LM PU sealant

Boss LM PU Sealant is a multi-purpose adhesive sealant with a wide cross section of use in construction and industrial application.

It is ideal for sealing joints in concrete panels, tiles, fibrous cement products, external cladding panels, block work and brickwork.

Boss LM PU Sealant is used for gap and crack filling, angle fillets, bedding hobs and sealing outlets.

It is also used as:

  • Gap filler between window or door frames
  • Adhesive for shower hobs before waterproofing
  • Adhesive for ceramic tiles subject to impact

Boss LM PU Sealant has excellent adhesion to most surfaces including concrete, brickwork, natural and artificial stone, steel, aluminium, wood, ceramic tiles, rigid plastics and fibre cement sheet.


One 600mL sausage will supply 12 lin. metres of 10mm x 5mm sealant bead. Usage is dependent on joint dimensions.

The correct geometry is:

  • Joint : width ratio of 1:1 up to 12mm wide
  • Depth constant at 12mm up to 24mm and
  • Joint : ratio of 2:1 from 25mm wide
  • All usual building joints with high movement. 
  • Connection joints between window- and doorframes and walls.
  • Expansion joints between many different construction materials.
  • Joints with large movement.

Colour : concrete grey, other colors on request
Packaging: 600 ml sausage

Storage/Shelf Life:

The storage and application of PU sealant affect the shelf life and usage. The shelf life of all given is understood to be 12 months from the date of manufacturing. It is to be kept in temperature from 5°C to
In the specific case of India, since practically the temperature rises up to 45°C to 50°C, the sealant is usable. Due to extreme heat or humidity, the skin formation time of the same may be little faster in those specific conditions. Although, the sealant can still be used with effectiveness.

What Is A Polyurethane Sealant? 

PU joint Sealant is basicly an insulating and grouting material. They can have ±25% movement capability. The flexibility ratio can be further increased as required. It is used for sealing, filling gaps, keeping water and air away from joints, absorbing the natural movements of building materials and increasing aesthetics.

Polyurethane Sealants Used for Sealing Purposes

Shore A hardness up to 45 polyurethane sealants are classified as low modulus. 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.

Polyurethane sealants are available in the market with the following names; Polyurethane construction sealant, polyurethane sealant, non-staining polyurethane sealant, UV resistant PU sealant, bubble-free polyurethane sealant and modified silicone sealant.

How to buy Boss PU LM sealant ?

Boss PU Sealant  is avaialble across India including Mumbai,Pune, Nashik, Jalgaon, Akola, Nagpur, Solapur, Auranagabad, Ahemdabad, Vadodara, Surat, Jodhpur, Udaipur, Chandigarh, Ludhiana, Amritsar, Jammu, Rudrapur, Moradabad, Noida, Lucknow, Kanpur, Varansai, Indore, Bhopal, Gwalior, Agra and etc.

Kindly call us for best price, door delivery, technical support, training  on PU sealants

How to use Boss PU LM polyurethane sealant ?


Surfaces must be sound, smooth and free from dust, laitance, loose matter, oil or other contaminants.

Good adhesion can be achieved on clean, dry, uncontaminated concrete, brickwork, timber, metals, ceramics and most coating surfaces without use of primers. However, adhesion to some surfaces may be improved by use of a primer. For any specific application needs contact your local AE representative.


Apply Boss LM PU Sealant using a manually or electrically operated closed-barrel caulking gun. Insert bag into gun, cut top of the bag, replace end cap and use. Extrude sealant firmly into joint to ensure complete contact on joint faces. Smooth as required with a spatula and diluted detergent to give a flat or concave surface.

Clean Up

Remove uncured Boss LM PU Sealant with xylene.

Health and Safety

In case of spills and accidents, refer to the Material Safety Data Sheet (MSDS) of the products or when in doubt contact your local AE representative.

Always wear protective clothing, gloves and protective goggles when handling chemical products.

For full information, consult the relevant MSDS.


Information contained in this document does not cover all possible application scenarios or imply product suitability for an application. Please contact your local AE representative or the AE Technical Department for further information.


AE and contractors recognised by AE as experienced in the application of AE products will provide warranties for individual projects. Warranty periods offered are dependent on project details and complexity. Requests for very long warranty periods may necessitate increased membrane thicknesses to ensure longevity.
Contact your local AE representative for further details.


Boss Products, Boss PU sealant is avaialble in which cities of Maharashtra ? 

Boss PU 25 LM polyurethane sealant is avaialble in all the cities of Maharashtra.Boss Silicone in Maharashtra

Boss PU 25 LM polyurethane sealant  is avaialble in following cities of Maharashtra: 

Nandurbar, Dhule, Jalgaon, Bhusaval, Amravati, Nagpur, Gondia, Bhandara, Nagpur, Wardha, Chandrapur, Yavatmal,  Akola, Buldhana, Aurangabad, Jalna, Hingoli, parbhani, Nanded, Latur, Osmanabad, Beed, Solapur, Sangli, Satara, Kolhapur, Sindhudurg, Ratnagiri, Raigad, Pune, Thane, Mumbai, Navi Mumbai, Alibaug, Palghar, Nashik, Wardha

Weight 16.5 kg
Dimensions 45 × 30 × 20 cm



Technical Data Sheet

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