What Is a Polyurethane Sealant?
A high-performance, single or two-component elastomeric sealing compound composed of polymer chains connected by urethane linkages is called a polyurethane sealant, or PU sealant for short. When applied, it cures by interacting with air moisture to create a rubber-like seal that is strong, flexible, and waterproof. Polyurethane sealants chemically attach to a wide range of substrates, such as concrete, metal, glass, wood, masonry, and PVC, without the need for specific adhesion primers in most applications, in contrast to common fillers or silicone-based formulations.
Polyurethane sealants are well-known for three key characteristics in the UAE's manufacturing, infrastructure, and construction industries:
Polyurethane sealants are now the preferred material for engineers, contractors, and procurement teams in the UAE's rapidly expanding construction industry, which includes everything from industrial facilities in Sharjah and Abu Dhabi to high-rise towers in Dubai.
Building materials have difficulties due to the UAE's climate, which includes frequent thermal expansion cycles, high UV exposure, temperatures above 45°C, and humidity along the coast. In these circumstances, standard sealants frequently debond, shrink, or crack. The expert solution to these problems is polyurethane sealants, which are specifically designed for harsh situations.
PU sealants provide the following benefits whether you're working on an industrial warehouse in the Jebel Ali Free Zone, a parking deck in Abu Dhabi, or a facade in Downtown Dubai:
| Performance Property | Benefit for UAE Projects |
|---|---|
| UV Resistance | Maintains colour and flexibility under direct Gulf sun |
| High Elasticity (25–50% movement) | Handles thermal expansion in concrete structures |
| Waterproof Seal | Prevents moisture ingress in coastal and humid environments |
| Chemical Resistance | Ideal for fuel stations, warehouses, and industrial floors |
| Paintable Surface | Integrates seamlessly with façade finishes |
| Multi-Substrate Adhesion | Bonds to concrete, steel, aluminium, glass, and timber |
Global-proven polyurethane sealant brands for automotive, industrial, and construction applications are available to buyers in the UAE. An overview of the top polyurethane sealant brands that UAE procurement teams use is provided below.
Dolphin PU 45 sealant is produced by Al Muqarram Industries, a reputable UAE-based company, and is one of the most well-known polyurethane sealants in the UAE and the larger Middle East market. Dolphin PU 45 is a polyurethane sealer designed for sealing and bonding applications. It is exceptionally durable, completely elastic, high modulus, and UV resistant.
Key Features of Dolphin PU 45 Sealant:
| Specification | Detail |
| Type | Single-component, moisture-curing |
| Modulus | High modulus |
| UV Resistance | Excellent — suitable for outdoor UAE applications |
| Primary Substrate | Concrete-to-concrete joints |
| Finish | Overpaintable |
| Ideal For | Industrial flooring, container building, metal industry |
| Manufacturing | EU-grade quality standards |
| Availability | Widely available across UAE via authorised distributors |
Key Insight: Dolphin PU 45 sealant provides high-performance concrete joint sealing for projects at the appropriate cost. It is perfect for concrete applications using polyurethane sealant in the infrastructure and industrial sectors of the UAE. Before applying, surfaces must be dry, clean, and free of grease; porous substrates should be primed appropriately.
One of the polyurethane sealant brands that UAE contractors rely on for high-spec construction projects is MAPEI, a well-known brand throughout the world.
| Product | Type | Packaging | Best For |
|---|---|---|---|
| Mapeflex PU 65 | Two-component | 10 kg/Drum | Horizontal flooring joints, roads |
| Mapeflex PU S25 | One-component | 600 ml sausage | Façades, curtain walls, joint sealing |
Key Insight: Authorized polyurethane sealant vendors, such as Lapiz Blue General Trading LLC (Dubai) and Fepy (Abu Dhabi), distribute MAPEI products in the UAE.
The Tremco Dymonic 100, a single-component, high-performance polyurethane sealant with industry-leading elongation of 800–900% and tensile strength of 350–450 psi, is supplied in the UAE by StonCor Middle East LLC (Dubai). It is perfect for high-end architectural and commercial applications because it comes in 300 ml and 600 ml cartridges in 21 standard colors, including Almond, Beige, Black, Aluminum Stone, and Anodized Aluminum.
| Specification | Dymonic 100 |
| Type | Single component |
| Elongation | 800–900% |
| Tensile Strength | 350–450 psi |
| Colour Options | 21 standard colours |
| Packaging | 300 ml, 600 ml |
| Business Type | Manufacturer |
One of the UAE's own manufacturers, Anchor Allied Factory LLC (Sharjah), produces the high-end multipurpose polyurethane sealant ASMACO PU 81. Because it is designed specifically for bus, truck, and rail sealing, it is a preferred choice among automotive PU sealant manufacturers serving the transportation sector in the United Arab Emirates. It attaches well to a variety of substrates and is available in sausage packs and aluminum cartridge formats.
| Specification | ASMACO PU 81 |
| Application | Bus, truck, rail, automotive |
| Colours | White, Grey |
| Pack Formats | Aluminium cartridges, sausage packs |
| Pack Size | 12 or 20 pcs/box |
| Manufacturer Location | Sharjah, UAE |
The Advathane Mastic, a low-modulus expansion joint polyurethane sealer supplied by Advanced Insight Insulation (Dubai) under the AL MUTATHAWIR trademark, comes in 600 ml sausage paste form. It is intended for use in precast panels, structural movement joints, and insitu concrete expansion joints in infrastructure and commercial applications.
China National Building Material Group FZE (Dubai) offers the SPU-321 Polyurethane Construction Sealant under the YUHONG brand to consumers looking for reasonably cost solutions from Chinese providers of polyurethane sealant factory networks. This product is intended for large-volume construction sealing applications and is supplied in metal bottles or drums with a one-year warranty.
Fyind links you with the most reliable distributors and providers of polyurethane sealants in all seven of the UAE. An outline of the platform's confirmed providers is provided below:
| Supplier | Products Supplied |
|---|---|
| Lapiz Blue General Trading LLC | Mapei Mapeflex PU 65, PU S25 |
| StonCor Middle East LLC | Tremco Dymonic 100 |
| Anchor Allied Factory LLC | ASMACO PU 81, PU 90 |
| Advanced Insight Insulation | Advathane Mastic PU Sealant |
| Fepy | Mapei Mapeflex PU S25 |
| China National Building Material Group FZE | SPU-321 / YUHONG PU Sealant |
Procurement Tip for UAE Buyers: Sourcing from recognized polyurethane sealant suppliers on Fyind guarantees that you will receive authentic products with appropriate technical data sheets (TDS), safety data sheets (SDS), and after-sales service, regardless of your location in Dubai, Sharjah, or Abu Dhabi. Using the Fyind platform, ask these vendors directly for a quote.
Fortune Emirates Specialty Engineering Chemicals is a top provider of raw materials for polyurethane chemicals, including silicone surfactants, polyether polyols, polyurethane catalysts, MDI (Methylene Diphenyl Diisocyanate), and TDI (Toluene Diisocyanate), which are obtained from top producers like Hanwha, Wannate, and OCI. Fortune Emirates provides services to foam makers, coatings manufacturers, and polyurethane sealant manufacturers in the Middle East and East Africa. It operates in Dubai, Sharjah, and the larger UAE. They have experience with elastomers, coatings, sealants and adhesives, flexible foam, and rigid foam.
Royal Industries is a well-known provider and manufacturer with headquarters in the United Arab Emirates that specializes in polyurethane and polysulfide sealant solutions for the building sector. They offer one-component and two-component PU sealant products for waterproofing, parking decks, industrial flooring joints, and facade sealing. In addition to being compatible with the NEO Backer Rod system for appropriate joint depth control, Royal Industries PU sealants are designed to be resistant to UV, moisture, and mechanical stress.
Key Insight: When searching for a polyurethane sealant manufacturer in the UAE with a track record of quality control and local technical assistance, contractors and specifiers turn to Royal Industries.
The PU sealant PU-735 is a particular grade reference that UAE industrial purchasers look for high-performance sealing in harsh settings. PU-735 formulations, an industrial-grade polyurethane sealant, usually include:
| Property | Specification |
| Type | One-component, moisture-curing |
| Shore A Hardness | 35–50 |
| Elongation at Break | ≥ 400% |
| Application Temperature | 5°C to 40°C |
| Curing Time (skin) | 30–60 minutes |
| Full Cure | 7–14 days |
| Substrates | Concrete, metal, PVC, glass, masonry |
| VOC Content | Low / compliant |
Key Insight: To verify compatibility with substrate and environmental exposure conditions, buyers procuring PU sealant PU-735 in the UAE can ask the supplier for TDS and SDS sheets.
Which polyurethane sealant brand is the best, and how does it stack up against the competition? To help with specification selections, the table below offers an unbiased comparison.
| Property | Polyurethane Sealant | Silicone Sealant | Polysulphide Sealant |
|---|---|---|---|
| Adhesion Strength | Excellent — especially on porous surfaces | Good | Good |
| Flexibility | High (25–50% joint movement) | Very high | Moderate |
| UV Resistance | Good to Excellent | Excellent | Moderate |
| Paintable | Yes | No (in most cases) | Yes |
| Chemical Resistance | Good | Moderate | Excellent |
| Abrasion Resistance | Excellent | Moderate | Good |
| Cost | Moderate | Moderate to High | Moderate |
| Best For | Concrete joints, facades, automotive | Glazing, sanitary areas | Fuel tanks, marine, airports |
Key Insight: Polyurethane sealants provide the best overall blend of strength, flexibility, and durability for the majority of UAE construction applications, including concrete joints, expansion joints, façades, and industrial floors. Silicone works well for pure glazing work, whereas polysulfide sealants are better for fuel-resistant or airport applications.
What is the strongest polyurethane sealant? One of the most common queries from UAE building experts is this one. A polyurethane sealant's strength is evaluated in several ways:
Key Insight: Always use a polyurethane sealant with a certified tensile strength rating verified by TDS documentation from top PU sealant manufacturers for structural or load-bearing joint applications.
Where is polyurethane manufactured? Polyurethane is produced all throughout the world, with significant production centers in:
| Region | Key Manufacturers |
|---|---|
| UAE / Middle East | Al Muqarram Industries (Dolphin brand), Anchor Allied Factory LLC, Royal Industries |
| Europe | MAPEI (Italy), Tremco (UK/Germany), Bostik (France) |
| Asia / China | YUHONG, Siway Sealants — major China suppliers polyurethane sealant factory networks |
| USA | Tremco, Sika, 3M |
Key Insight: Sharjah Industrial Area, Dubai Industrial City, and Jebel Ali Free Zone are the main locations for polyurethane sealant manufacturers and formulators in the United Arab Emirates. Regional wholesalers such as Fortune Emirates Specialty Engineering Chemicals supply raw chemical inputs.
Automotive PU sealant producers and their products are in high demand due to the UAE's booming automotive aftermarket, fleet services, and bus/truck manufacturing industries. Important products include:
| Product | Manufacturer / Supplier | Application |
|---|---|---|
| ASMACO PU 81 | Anchor Allied Factory LLC, Sharjah | Bus, truck, rail body sealing |
| Dolphin PU 45 Sealant | Al Muqarram Industries, UAE | Automotive and industrial bonding |
| Tremco Dymonic 100 | StonCor Middle East LLC, Dubai | Multi-purpose incl. transport vehicles |
Key Insight: For vibration damping, fuel resistance, and long-term adherence on painted metal surfaces, automotive PU sealants must fulfill performance requirements. Make sure the polyurethane sealant you choose is compliant with the OEM surface preparation procedures for the car.
Adhesives and sealants are frequently utilized together in the UAE's industrial and construction markets. Many contemporary polyurethane sealants serve as structural adhesives, joining disparate materials with high tensile and shear strengths, even though their main purpose is to stop liquids, gases, or impurities from passing through a joint or gap.
Key Insight: Products that are specifically advertised as both sealant and adhesive systems, such as Dolphin PU 45 sealant and MAPEI Mapeflex PU 65, bridge the gap between these two product groups. Because of its dual use, polyurethane sealants are very affordable for building projects in the UAE where bonding and sealing are needed at the same joint.
The decision between single-component (1K) and two-component (2K) systems is crucial when choosing a poly seal or polyurethane sealant for your UAE project:
| Factor | Single-Component (1K) | Two-Component (2K) |
|---|---|---|
| Curing Mechanism | Moisture from atmosphere | Chemical reaction between components |
| Ease of Use | High — ready to use from cartridge | Requires mixing in correct ratio |
| Cure Speed | Moderate | Faster, controllable |
| Joint Movement | Up to 25% | Up to 50% |
| Best For | Façades, windows, small joints | Expansion joints, flooring, large gaps |
| Common Products | Dolphin PU 45, Dymonic 100 | Mapeflex PU 65 |
UAE Climate Conditions: In single-component systems, especially high humidity close to the shore might hasten the curing process. PU sealants should always be kept out of direct sunlight and in a cool, dry place between 5°C and 25°C.
Correct application is essential for achieving the rated performance of any polyurethane sealant in UAE conditions. Follow this process:
What is a polyurethane sealant?
A polyurethane sealant is a permanently elastic, moisture-curing sealing substance composed of polyurethane polymer chains. In construction, automotive, and industrial applications, it is used to seal seams, gaps, and cracks. It forms a strong connection with concrete, metal, glass, wood, and other substrates while staying flexible and waterproof over time.
What is the best brand of polyurethane sealant?
What is the best brand of polyurethane sealant depending on the application. In the UAE: For construction and concrete joints: MAPEI Mapeflex, Dolphin PU 45 sealant, and Tremco Dymonic 100 are top-specified brands. For automotive sealing: ASMACO PU 81 and Dolphin PU 45 sealant from UAE-based automotive PU sealant manufacturers. For façades and curtain walls: Mapei Mapeflex PU S25, Tremco Dymonic 100.
What is the strongest polyurethane sealant?
Tremco Dymonic 100 is one of the strongest single-component polyurethane sealants available from the top distributors and suppliers in the United Arab Emirates, with tensile strengths of 350–450 psi with elongation of 800–900%. Mapei Mapeflex PU 65 provides outstanding load-bearing joint performance for two-component systems.
Where is polyurethane manufactured?
While MAPEI, Tremco, and YUHONG are imported from Europe and Asia, respectively, brands like Dolphin (Al Muqarram Industries), ASMACO (Anchor Allied Factory LLC), and Royal Industries are produced domestically in the UAE. Local experts like Fortune Emirates Specialty Engineering Chemicals provide raw polyurethane chemicals (MDI, TDI, polyols).
How is polyurethane sealant different from silicone sealant?
Polyurethane sealants have greater mechanical and abrasion resistance, are paintable, and adhere more firmly to porous substrates like concrete and masonry. Silicone sealants work well in high-temperature settings, sanitary locations where paintability is not necessary, and non-porous glazing applications.
Can I use polyurethane sealant for concrete joints?
Yes — polyurethane sealant for concrete is one of its main uses in the UAE. Products that are specifically rated for industrial floor joints, expansion joints, and concrete-to-concrete joint sealing include Dolphin PU 45 sealant, Mapeflex PU 65, and SPU-321.
Fyind is a reliable B2B product directory in the UAE that links professional buyers with reputable providers of polyurethane sealants, top manufacturers of PU sealants, and top distributors and suppliers of sealants in the UAE. The following explains why Fyind is essential to UAE procurement teams:
| Advantage | What It Means for You |
|---|---|
| Verified Suppliers | All listed companies are UAE-registered and vetted |
| Multi-Brand Access | Compare polyurethane sealant brands UAE in one place |
| Manufacturer-Direct Options | Access polyurethane sealant manufacturers without middlemen |
| Technical Specifications | Product TDS and specification details available per listing |
| Multiple Locations | Dubai, Sharjah, and Abu Dhabi suppliers all listed |
| Request for Quote | Send enquiries directly to multiple PU sealant suppliers |
| Diverse Product Range | From Dolphin PU 45 sealant to MAPEI, Tremco, ASMACO, YUHONG, and more |
Fyind provides you with direct access to the leading sealants supplier in Dubai and throughout the Emirates—all in one certified marketplace—whether you are a civil contractor, a distributor of building products, a facilities management firm, or an industrial procurement manager in the UAE.
Fyind UAE — Your trusted marketplace for polyurethane sealant suppliers, leading PU sealant manufacturers, and sealants and adhesives across Dubai, Sharjah, Abu Dhabi, and the wider UAE. Browse, compare, and request quotes from verified polyurethane sealant supplier and exporter partners today.
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