Sealant Manufacturers produce adhesives and sealants for industrial, automotive, maintenance and repair, electronics, aerospace, building and construction applications. They manufacture a variety of sealant chemistries, including silicones, polyurethanes, acrylates, acrylic-polyamides, anaerobics and hot melts. They are supplied in a wide range of viscosities, curing times, and weather resistance characteristics. They also offer services such as design assistance, material selection, prototyping, assembly, kitting, stocking and OEM conversions.
Generally, sealants are used to block the penetration of liquids and gases or dust from one surface to another. They are often used as an alternative to mechanical fasteners, and they typically have a much broader operating temperature range. The key specifications of industrial sealants include stability, bond strength and material compatibility. Choosing the right sealant depends on the intended application and environment.
A number of factors will impact the adhesion of a sealant to a substrate, and a primer or pre-conditioning process may be required. Moreover, a sealant’s weatherability will vary according to the specific chemistry and additives used in its formulation.
Some of the top sealant manufacturers are 3M, Momentive Performance Materials, AiT, Alloy Products, Bondmaster, Bostik, Amazing Goop, CRC, Cross Check, Cytec, Devcon, Dow Corning, FISHMAN, H.B. Fuller, Interseal and Sherwin-Williams. These companies produce a variety of sealant chemistries, such as silicones, anaerobics and cyanoacrylates, epoxy, hot melts, and rubber. They provide an extensive range of dispensing options, enabling customers to choose the optimum sealant for their specific application.
The leading industrial sealants are typically designed to withstand certain conditions, such as water exposure or movement considerations. In addition, many are designed to protect against chemicals and corrosion. This is because they are typically applied in environments that are subject to frequent moisture, sunlight, heat or pressure.
Other important criteria for industrial sealants are their ability to remain flexible in the face of environmental stress or pressure, and to maintain their shape when mated together. Some sealants are also designed to provide a level of thermal insulation or electrical isolation, or to be fire retardant or halogen free.
The top industrial sealant manufacturers have a broad range of product offerings. Some specialize in specific product types or a particular industry. For example, Sika produces silicones and polyurethane sealants for the transportation, general assembly and building & construction industries. Its sealants are available in gun grade, pour grades and a variety of sizes. They are sold under the trade names SIKASIL (silicones), SIGAFLEX (urethanes) and SIKAHYFLEX (hybrid). They are manufactured in a variety of viscosities and are formulated to be used on surfaces including glass, metal, concrete and plastic. They can be cured using air, heat or UV curing systems. They are also available in a variety of colors.