High Temperature Sealant

Choosing the right sealant is vital for any job, but it’s especially important when working in extreme temperatures. Silicone sealant stands up to scorching temperatures, repels corrosive chemicals, and maintains its integrity over time.

The fischer high temperature silicone DHS is a durable, one component rubber sealant that cures with atmospheric moisture to form a flexible seal. This material is suitable for sealing, bonding and gasketing applications.

Construction Industry

A silicone sealant is an ideal choice for a construction project because it can withstand high temperatures without losing its shape or integrity. It is also highly water-resistant and can be used in damp areas. This makes it suitable for sealing HVAC systems in homes and commercial buildings, as well as in other applications where temperatures can fluctuate greatly.

During fire testing, the tensile strength and modulus of elasticity of a silicone sealant can be evaluated to determine its reaction to high temperature. The tests can be performed on TA joints or shear samples. The shear test provides a quick alternative to the long TA joint testing process and is a good method for evaluating trends in the performance of a bonding sealant. The results show that silicone sealants can retain a minimum of 75% of their original shear strength after 2 hours of heat exposure at 180 degC.

Another important characteristic of a silicone sealant is its low thermal expansion rate, which prevents it from expanding or contracting in high temperatures. This makes it a popular choice for sealing ductwork, humidifiers, pump and compressor gaskets, and insulating wire and cable. It also adheres to a wide variety of surfaces, including metal, glass, ceramic, plastic, brick and mortar. Moreover, it is easy to use because it does not require mixing and can be applied with standard gun equipment.

Automotive Industry

The automotive industry relies on sealants to ensure that different parts of a car are securely fastened. This includes the sealing of powertrain, fuel and water systems. These sealants need to be durable, strong and flexible at high temperatures. They also need to be able to resist cracking, shrinking and migration caused by thermal cycling. They are also ideally suited for replacing cut gaskets.

These adhesives can also be used in the construction of ductwork, appliance door gaskets, humidifier gaskets and insulating wire and cable. These elastomeric materials can hold up to extreme temperature variations and are resistant to UV radiation, chemicals and moisture. They are also ideal for bonding a variety of surfaces, including glass, tile, metals and woods.

Using high temperature sealant is easy and straightforward. First, make sure that the surface high temperature sealant to be sealed is clean and dry. Next, choose the appropriate product based on the application and the environment. Choose a silicone that has an operating temperature range of -60oF to 500oF and is suitable for use in a wide range of conditions. Before applying, cut the nozzle of the tube at a 45-degree angle. Finally, apply a bead of sealant along the seam to be sealed and smooth it with a tool or damp cloth.

The global market for high-temperature sealants offers significant growth opportunities. A few of the driving factors include growing automobile invention, excessive temperature resistance properties and increasing demand for electric vehicles (EVs). However, business leaders will only have a short window of opportunity to reimagine their core operations.

Oil & Gas Industry

The oil and gas industry faces a range of challenges. Its equipment must be able to endure high temperature sealant harsh chemical environments while maintaining high temperatures. This requires a variety of different materials to be used in seals and coatings.

PTFE and PEEK are common thermoplastics and elastomers that are often used in industrial seals. These materials offer a number of benefits to the industry, including dimensional stability, chemical resistance, and gamma and X-ray radiation resistance. These features make them a great choice for harsh work environments.

Labyrinth seals, slipper and backup rings, and piston rings commonly use PTFE material. Its high elasticity and good chemical resistance also makes it ideal for a variety of oil well applications. Kalrez is another option for seals that must withstand a variety of environmental conditions. This copolymer of tetrafluoroethylene and propylene is highly resistant to abrasion, vibration loosening, steam, hydraulic fluids, and most petroleum products.

Coatings are critical for the oil and gas industry, as they protect equipment from corrosion. They can extend the lifespan of equipment and increase operational efficiency. However, it is important to note that the right lubricant is still needed for the equipment’s specific operating conditions. Using the wrong lubricant can lead to problems such as degradation of seals, which can result in expensive downtime and lost production.

Chemical Industry

The chemical industry uses high temperature sealant as an adhesive to bond and seal a wide variety of surfaces. It can be used in applications where a strong, long-lasting hold is required and in environments where there will be exposure to corrosive or caustic chemicals. High temperature sealant is available in a range of different formulas, each with unique characteristics. Before selecting the right one, it is important to consider the specific requirements of the application. For example, will the sealant be used as an adhesive or a sealant, and will it be exposed to vibration loosening, water or oil leaks, or temperatures above 1000 degrees Fahrenheit?

There are several high-temperature silicone sealants that meet the demands of industrial applications. For example, Deacon 770-L is a thermal-reactive compound that works well as a gasket dressing, thread sealant and metal-to-metal interfaces. This sealant is also formulated to resist the influx of liquids, hydrocarbons and steams and remains flexible in the face of compression loads.

Another option is Permatex’s high-temperature thread sealant, which can withstand extreme conditions without separating or cracking. It can be applied to bare or painted threaded parts and locks tightly, resisting vibration loosening, moisture and hydraulic fluids. It also lubricates threads, allowing for easy disassembly and assembly. It is also non-toxic, water-proof and safe to use around most plastics. It comes in a 10.1-fluid-ounce cartridge with a removable nozzle and cap.