Automotive Polyurethane Adhesive

Automotive Polyurethane Adhesive

Automotive polyurethane adhesive is a versatile glue that works well with most materials. It can withstand rain, heat, cold, and humidity. It can even be used in a hose or a mastic gun.

It bonds most permeable and impermeable surfaces, including metals, glass, ceramic, rubber, paper, wood, and leather. It also bonds vacuum-formed parts and can be used for potting.


The automotive industry requires high-strength adhesives for bonding and sealing a wide range of components. These include formed-in-place gaskets, heat exchanger bonding and filter end cap bonding. Additionally, many electronic systems require the use of adhesives to bond sensors, switches and relays. These adhesives must be able to cure quickly and meet demanding environmental conditions, such as temperature and humidity.

In addition to their strength, these adhesives have the ability to absorb stresses and dampen vibration and noise. They are also paintable to protect seams and bonds automotive polyurethane adhesive from UV radiation. These advantages make PU adhesive sealant systems ideal for transport vehicle glazing and cabins.

TIGER SEAL is a single component, moisture cured urethane adhesive and sealant with exceptional adhesion to Lexan (R), ABS, polycarbonate and other plastics and primed metals. It is odorless, non-yellowing and resistant to indirect UV exposure. This product is easy to apply and flows easily into hard-to-reach areas. It is also available in a variety of dispensing equipment to meet the needs of any application. The adhesive has been tested to determine its mechanical properties for use in stress-change prediction models.


Chemical-resistant automotive polyurethane adhesives are formulated to provide a strong bond on various surfaces, even those that are sensitive to moisture. They are often used in automotive, home, and industrial repairs, as well as in the manufacture of furniture and carpeting. This type of adhesive is also highly effective in high-temperature applications, such as auto body and paint shops.

These adhesives are available in one- or two-component systems, eliminating the need for in-plant mixing equipment. The two-component types are considered more stable and have better physical properties than the one-component varieties. They can be either elastic or rigid, depending on the chemicals they contain. Elastic 2K adhesives are thermoplastics and can be reworked by heating them, while the rigid ones are thermosets and cannot be reworked.

Pressure-sensitive polyurethane adhesives typically comprise a poiyurethane polymer dissolved in non-aqueous organic solvents, with additives such as fillers (e.g. fumed silica and glass bubbles), tackifiers, adhesion promoters, plasticizers, thixotropic agents, impact resistance aids, stabilizers, and flame retardants. The additives help to improve adherence, reduce process costs, and comply with environmental standards.

Wide range of substrates

Whether creating automotive seat cushions or wetsuits, many industries use polyurethane adhesives. They can bond a variety of substrates, including fabric, plastic, aluminum and styrofoam. They also offer unique physical characteristics, such as the ability to distribute stresses evenly across bonded surfaces. They can also withstand extreme temperatures, unlike mechanical fasteners.

These adhesives are available as either one- or two-component systems. One-component systems eliminate the need for in-plant mixing equipment and are suitable for general applications. They are formulated with low volatile organic compound (VOC) content and have a short shelf life. They also require moisture to set, and a high level of thixotropy and low odor to make manual application easier.

Among the most popular automotive polyurethane adhesives are ones that bond carbon fiber to metals and other materials. These adhesives come in dual cartridges with static mix nozzles to ensure accurate mixing and easy application. They also cure rapidly at room temperature to provide handling strength in about five minutes. They are ideal for use in automotive assembly, including bonding replacement windshields.

Easy to apply

The transportation industry requires strong adhesives and sealants to securely assemble, seal and protect the parts and panels of cars, trucks, trailers and trains. Polyurethane automotive polyurethane adhesive adhesives are a great choice for these applications, because they are flexible and offer excellent stress absorption and vibration damping. They are also easy to apply, because they can be molded around contours and curves.

Another use for urethane adhesives is in aluminum pinchweld bonding. Many transport vehicles have aluminum frames and pinchwelds, which are prone to corrosion. To prevent this, a special type of non-conductive urethane can be used on the aluminum surface. The adhesives must be applied with proper techniques, because over-priming can weaken the adhesion.

The automotive industry uses high-performance, low odor urethane adhesives for windshield and glass bonding. These adhesives are highly thixotropic, which means they do not flow and have good resistance to stress change. They can be cured with ambient humidity and are available in conventional, fast-cure, low odor and high viscosity types. These adhesives are ideal for glass and windshield repair, car manufacturing, bus repair and truck and trailer repair.


PU adhesives are available in a variety of colors, Shore A hardnesses, and open times to accommodate many different application requirements. These adhesives are also highly flexible and durable, providing excellent weathering resistance. They can be applied manually or with a pneumatic applicator to improve consistency and accuracy. These adhesives are safe to use and are non-toxic, reducing the risk of exposure to volatile organic compounds (VOCs).

VOC-free polyurethane adhesives are used in various automotive applications, including bonding aluminum gussets, bodywork sealing, sheet metal bonding and repair, and windshields. They are easy to apply and have high impact resistance. They are also resistant to moisture and oxidation, making them ideal for outdoor use.

PU adhesives are commonly found in the auto industry, especially as manufacturers look to produce lighter vehicles. They can be used to replace bolts and rivets in a range of vehicle components, increasing strength and load-bearing capabilities. They also reduce vibrations and noise, optimizing ride, driving, and handling characteristics and extending the life span of the car. These adhesives are also used in the construction industry, where they can be applied to metal and wood.

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