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Silicone Adhesives & Sealants

From gap filling, sealing, bonding to preventing moisture and ozone, silicone adhesives and sealants find wide applications in multiple industries.

At Exonic Polymers, we specialize in designing and developing custom silicone-based adhesives and sealants for specific applications. Our silicone adhesives and sealants offer unparalleled bond strength and adhesion on all surfaces from plastics, metals, painted surfaces, wood to glass.

Our niche products have been engineered to form strong bonds that withstand high temperatures while remaining flexible after curing. The ability to resist water, ozone, heat, and chemicals is the reason why our products are preferred by the automotive, transportation, electronic, electrical, and construction industries.

We continue to expand our diverse offerings that include RTV silicone sealant, quick setting silicone sealant, liquid silicone sealant, and custom sealants.

What are silicone adhesives and sealants?

From construction to HVAC, automotive to transportation, sealants and adhesives play a critical role across industries. Sealants are used to fill the gaps between surfaces or objects and prevent water, dirt, and dust from entering. Adhesives are designed to stick two surfaces together.

Sealants are polymers with a compact molecular structure that prevents penetration of moisture or dirt; adhesives have a more complex structure specifically meant for gripping and binding surfaces at cellular levels. Adhesives have robust tensile and shear strength that makes them the preferred bonding materials in high-pressure situations. When applied accurately, they offer long-lasting bonds. Sealants have lower strength in comparison with adhesives. The critical requirement in a suitable sealant is its flexibility. While there is a wide range of adhesives and sealants available, silicone sealants and adhesives are a class apart.

Silicone (or 'polysiloxane') is an engineered polymer that has elastic properties (elastomer). Their special properties are due to their unique chemical backbone that helps them retain their elasticity at low temperatures while being stable at higher temperatures. Apart from being inert to chemicals, silicone adhesives and sealants offer excellent resistance to weathering and moisture.Adhesives and sealants made from silicone are widely used in the automotive, construction, aerospace, electronic, and transportation industries.

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EX3-138 - Exonic Industrial Multi-purpose RTV Silicone Adhesive / Gasket Maker

High-Temp Oil-Resistant RTV Silicone Gasket Maker, Black - EXS-138

EX3-138 - Exonic Industrial Multi-purpose RTV Silicone Adhesive. Exonic Polymers EX3-138 is a 1-part, oxime cured, silicone adhesive. This product is great for applications that require a temperature resistant, vibration resistant, low odor, and non corrosive product.

Starting at: $12.70

EX3-106 - Exonic High-Strength HVAC Multi-Purpose RTV Silicone Sealant

EX3-106 - Exonic High-Strength Multi-Purpose RTV Silicone Sealant

Exonic Polymers high-strength Multi-purpose HVAC Silicone sealant is a premium 1-part / 1-component RTV acetoxy cure silicone sealant. This product is specifically engineered to meet the demanding applications in the HVAC industry. Great for caulking and sealing air conditioners, ducts, furnaces, refrigerators, aluminum siding, and flanged pipe joints.

Starting at: $13.84

Exonic Self-Leveling - Neutral Cure Adhesive

Designed as a 1-part silicone RTV developed for sealing and coating applications. A neutral cure adhesive offers unprimed adhesion and sealing to concrete joints, wood, many metals and plastics.

Starting at: $14.80

Exonic Self-Leveling Neutral Cure Silicone Adhesive Coating

Developed as a 1-part self leveling silicone RTV developed for coating applications. Offers unprimed adhesion to many metals and plastics. When cured, this heat resistant silicone adhesive results in a very durable silicone adhesive coating. The high heat silicone elastomer resists weathering, ozone, moisture, UV and high temperature.

Starting at: $14.98

Exonic Fast Cure - Fast Adhesion Onset Silicone RTV Adhesive

Great for applications that requires a quick setup and adheres to many different types of substrates.

Starting at: $16.45

Fast-Setting Neutral-Cure Silicone RTV Sealant, EX3-134

Exonic Fast Neutral Cure Silicone RTV Sealant

Starting at: $16.78

EX3-107 - Exonic Industrial Multi-Purpose RTV Silicone Sealant

Exonic Polymers Industrial multi-purpose is a 1-part acetoxy RTV silicone sealant. Great for sealing general purpose requirements, gasketing and other critical bonding and sealing general applications.

Starting at: $17.54

EX3-137 Exonic Torque Resistant RTV Silicone Adhesive

Exonic Polymers EX3-137 is a 1-part, oxime cure silicone RTV sealant. This product is great for applications that require an extremely flexible gasket that is temperature resistant, oil resistant, low odor, and non corrosive product.

Starting at: $17.89

Exonic High-Temp RTV Silicone Adhesive / Sealant - Ultra Copper

Great for applications that require an extremely flexible gasket that is temperature resistant, oil resistant, sensor-safe, low odor, and non corrosive product.

Starting at: $17.92

EX3-124 - Exonic Plastic Bonding Silicone RTV Adhesive

Plastic-to-Plastic Bonding RTV Silicone Adhesive Sealant, EXS-124

Exonic Polymers EX3-124 Plastic Bonding Silicone RTV Adhesive is a 1-part, oxime cure, RTV silicone adhesion developed specifically to adhere to difficult plastics. Great for applications that require adhesion to low surface tension plastics that traditionally cause challengers when attempting to adhere to.

Starting at: $18.16

EX3-109 - Exonic High-Temp. - Oil-Resistant Adhesive Silicone Sealant

High-Temperature Oil-Resistant Silicone Sealant/Adhesive, EX3-109

Exonic Polymers high temperature & oil resistant silicone adhesive is a 1-part RTV Oxime cured silicone sealant. Developed for the industrial applications and the automotive industry that require a sensor-safe, low odor, and non corrosive product. Our product retains high flexibility and oil resistant properties including auto fluids, shop fluids, and vibration.

Starting at: $18.27

Exonic Tin-Free Silicone RTV Adhesive Sealant

Our non-tin curing Silicone RTV is an excellent choice for applications that require fast development of physical properties and fast unprimed adhesion.

Starting at: $19.10

Exonic Conformal Coating - DC 3-1753

Protective coating for rigid and flexible circuit boards. Fast-curing, one-part, self- priming coating cures to flexible, transparent elastomer ideally suited for electronic printed wiring board applications, particularly those employing sensitive component.

Starting at: $19.60

Exonic 1-Part Self-Leveling Acetoxy Cure - RTV 118

Designed as a 1-part silicone RTV developed for coating applications. This product offers unprimed adhesion to many metals and plastics. When cured, the product results a very flexible and durable silicone adhesive coating. The elastomer resists weathering, ozone, moisture, UV and high temperatures. A self-leveling products which are preferable to paste consistency sealants when flow into small crevices and hard-to-reach places is desired.

Starting at: $20.16

Exonic Self-Leveling Conformal Coating

Designed as a 1-part clear silicone RTV developed for conformal coating applications. This product offers unprimed adhesion to many metals and plastics. EXS-231 combines high flexibility with a neutral oxime cure system to provide a durable silicone adhesive coating.

Starting at: $20.74

Exonic High-Temp HVAC Red Silicone Sealant

EX3-100 - Exonic High-Temp Red Silicone Sealant - RTV-106

Exonic Polymers High-Temp HVAC Silicone sealant is a premium 1-part / 1-component high temp RTV acetoxy cure silicone sealant. This product is specifically engineered to meet the demanding applications in the HVAC industry. Great for sealing heating elements, gasketing and other critical bonding and sealing applications where applications must perform at high temperatures

Starting at: $21.09

Exonic Self-Leveling Neutral Fast Cure Silicone Adhesive Coating

Generally used to in thin coating applications. Generally offers excellent unprimed adhesion to many metals and plastics. Once product is cured a durable and very flexible silicone adhesive coating is formed, that resist weathering, ozone, moisture, UV and high temperatures.

Starting at: $21.78

Exonic High Temperature Gasket Dressing Gel

Developed as a high temperature gasket sealer. Developed as a non-running silicone gel sealant, this auto gasket sealant provides high-tack properties. This product will fill microscopic voids between the gasket and clamping surfaces. EXS-700 is the premier gasket dressing due to the fact that it will not lose physical properties when subjected to extreme temperatures.

Starting at: $22.11

Exonic Fast Heat Cured Conformal Coating

Starting at: $22.59

Exonic Self-Leveling RTV Electronics Silicone Coating

Designed as a liquid con-formal coating to provide environmental protection for printed circuit boards and other sensitive electronic components.

Starting at: $23.23

Exonic Temporary Cure In Place Silicone Coating

Designed as a peelable silicone RTV rubber developed for applications requiring a form fitting temporary protective cover. EX3-131 is a 1-part silicone adhesive that when applied to the substrate, cures to a pliable, removable protective covering within a day.

Starting at: $24.11

Exonic Self-Leveling Temporary Cure In Place Silicone Coating

Designed as a self-leveling peelable silicone RTV rubber developed for applications requiring a form fitting temporary protective cover. EX3-132 is a 1-part silicone adhesive that when applied to the substrate, cures to a pliable, removable protective covering within a day.

Starting at: $24.11

Exonic Self-Leveling Neutral Cure Flexible Silicone Adhesive Coating

Designed as a 1-part silicone RTV developed for conformal coating applications. This product offers unprimed adhesion to metals and many plastics. High flexibility is combined with an oxime cure to result in a durable silicone conformal coating.

Starting at: $24.48

Exonic Low Modules Silicone RTV Adhesive - 10.3 Oz Cartridge

EX3-127 is a low modulus neutral cure RTV silicone adhesive rubber sealant developed for applications requiring fast development of physical properties and fast unprimed adhesion.

Starting at: $25.86

Underwater Acrylic Pool and Aquarium Windows Sealant

Silicone Sealant - Sealing Acrylic (PMMA) Glass Pools, Aquariums, and Windows

EXS-241 is a fast curing adhesive silicone RTV developed for applications requiring fast deep section cures and excellent adhesion. This product is a 2-part, 1:1 mix silicone adhesive that can be handled within minutes of being mixed and applied to the substrate. A dispensing gun is required for the dual syringes on this 2-part adhesive mixture.

Starting at: $27.25

Silicone Product Categories Overview

Exonic Polymers: The silicone specialist

Exonic Polymers offers top-notch silicone products that are specifically designed to address the most challenging applications across industries.

Our silicone-based adhesives and sealants offer unparalleled bond strength and adhesion to a diverse range of surfaces, including wood, synthetic fiber, glass, plastics, painted surfaces, metals, and much more.

Exonic Polymers' high-quality silicone adhesives and sealants are extensively used across various industries from aerospace, electronics, LED lighting, building materials, construction to industrial manufacturing.

With years of experience in offering tailored solutions for companies, Exonic Polymers has emerged as the preferred destination for silicone adhesives and sealants. Our talented team of chemists and engineers have developed products with precise formulations to help industries overcome the toughest of challenges.

Our range of silicone adhesive sealants, liquid silicone sealant, RTV silicone sealant, and fast cure silicone sealant offers outstanding durability in diverse environments and applications. Exonic

Polymers range of silicone adhesives and sealants are renowned for their:

• excellent resistance to high and low temperatures, ozone, ultraviolet light

• low water absorption

• movement capability.

• low-temperature flexibility

• ability to form long-lasting, strong chemical bonds with diverse surfaces

• Outstanding durability

• Widest selection of silicone products

We also offer custom color-matched silicone products that ensure a superior aesthetic finish that blends with the equipment, electronic infrastructure, or building décor. While we use the latest technology, all our products meet the stringent safety and formulation standards in various industries.

Bonding and sealing solutions that industries rely on

Electronics and electricals

The top priority is ensuring electronic devices, electrical circuits, and systems are adequately protected from optimizing performance and safety. Exonic Polymers' high-quality silicone sealants are specifically formulated to prevent contamination, moisture build-up, and overheating, all of which dramatically impact the longevity and integrity of systems and equipment.

We have an excellent line of conductive adhesives and Silicone Encapsulating & Potting products that offer robust component and PCB interconnections. Our electrically conductive adhesives ensure strong bonds, superior conductivity, and efficient thermal dissipation.

For instance, Exonic Flexible EMI/RFI Conductive Silicone Sealant offers a fast cure while offering optimum resistance against ozone, moisture, weathering, high temperature, and UV. Exonic Self-Leveling RTV Electronics Silicone Coating provides optimum environmental protection for sensitive electronic components and printed circuit boards.

For coating assemblies, industrial sealing, potting, and encapsulation, Exonic Self-Leveling RTV Electronics Silicone Coating is a perfect match. The liquid conformal coating offers superior environmental protection for sensitive electronic components and printed circuit board.

Electrical equipment manufacturers rely on our silicone adhesives to offer consistent insulation, superior quality, and optimum performance. Our silicone adhesives and sealants outperform other types of sealants and are widely used in high-voltage insulation, cables, wires, surge arrestors, breakers, and EMI shielding.

The multiple benefits our silicone adhesives offer extend to:

• Easy processing

• Enhanced hydrophobicity

• Decreased weight

• Low maintenance

• Superior corrosion and erosion resistance

• Outstanding durability

• Excellent tracking resistance

Regardless of the scale of your electrical or electronic infrastructure challenges, you can count on our various silicone adhesives and sealants to overcome them.

Construction/Buildings

Sealants are employed to connect and join the various parts and materials to the main structure and themselves. They help close the gaps between the elements and surfaces of the construction and thus, prevent fluids and other substances from passing through surfaces and joints.

Exonic Polymer's versatile silicone sealants and adhesives find extensive applications in the construction industry. From Glazing sealant to tailored silicone adhesives, we offer quick setting silicone sealant and adhesives that seal humidity, UV, and dirt. As the leading RTV silicone sealant manufacturers USA builders rely on, we offer precisely formulated RTV silicone sealants that provide excellent waterproofing and bonding properties. RTV or Room Temperature Vulcanizing is a technology that helps the sealant cure instantly on exposure to air.

Check out our Fast-Setting Neutral-Cure Silicone RTV Sealant, EX3-134 which is a quick-setting silicone sealant. The RTV sealant cures at room temperature entirely within 72 hours. The one-part silicone adhesive sealant features a corrosive-free oxime cure system that allows it to set in eight minutes, be tack-free in 20 minutes, and translucent after curing. With no primer requirement, the silicone sealant binds well to most types of building materials, including plastic, metal, and glass.

Automotive and transportation industry

The automotive and transportation industry has embarked on the fast lane of technology transformation. Easy processing, fast setting, abrasion resistance, low stress, thermal stability and conductivity, and low compression set are among the many challenges that the transportation industry faces. Exonic Polymers' silicone adhesives and sealants are equipped to address the transportation industry's current and future requirements. Apart from our time-tested products, our ongoing commitment to research and development has led to us formulating advanced solutions.

With the focus on reducing carbon emissions, the industry invests intelligent emissions, electric vehicles, and redesign of powertrain systems. While electric cars and other green fuels are poised to flood the market, the industry is challenged more than ever to make vehicles more robust, safer, efficient, and durable.

At Exonic Polymers, one of our key expertise lies in designing custom solutions for our customers in the automotive and transportation industry. We have created and developed an extensive range of silicone sealants and adhesives for automotive sealing applications.

Our exterior and interior coatings are not only durable but offer optimum levels of transparency, flexibility, and top-notch chemical, thermal, abrasion and solvent resistance. Silicone coating products on automotive components is a proven way to eliminate component vibrations, engine noise, and harshness while providing waterproofing resistance.

The comprehensive portfolio of automotive sealants and coatings additives we offer is highly sought after by various automotive sealing applications. While our silicone sealants retain their elastomeric properties even in extreme cold and hot environments, they are known for their unmatched dielectric properties, weathering resistance, and bonding strength.

Our future-focused silicone adhesive products and solutions find wide application in the automotive industry, specifically in:

• Engine control units

• Vehicle stability control

• Climate controls

• Instrument panels

• Transmission control systems

• ABS (Anti-lock brake systems)

• Powertrain applications

• Seals, valves, and gaskets

• Sensors and connectors

• Display and security devices

• Battery monitoring systems

Find the best product for your needs

At Exonic Polymers, our mission is to offer the ideal combination of the highest quality of products with zero defects and exceptional customer service. We consistently fulfill our commitment to make on-time delivery.

We listen carefully to your specific concerns and requirements unique to your industry and application before offering a tailored solution. You can also browse through our expansive catalog of niche silicone products organized according to product categories, industries, and applications.

We don't just create products that form strong bonds with surfaces. We are invested in developing long-lasting bonds with our ever-expanding clientele.

Get in touch with one of our friendly and knowledgeable team members for advanced silicone adhesive and sealant solutions. Over the years, Exonic Polymers has developed a diverse line of silicone products that provide solutions to the world's most challenging applications. Our products are used in various industries, including aerospace, electronics, LED lighting, building materials, construction, and industrial manufacturing. We supply silicone in many forms, 1- & 2-part silicone adhesives, thermal & electrically conductive silicone, encapsulating & potting silicone, silicone coatings, silicone gels, and silicone grease. Below you will find more in-depth information about each category of products.

Silicone Sealants & Adhesives

Exonic Polymers extensive line of sealants and adhesive products provide many different characteristics designed for specific applications. These product characteristics including many of the following: extreme temperature resistance, accelerated / fast cure, flexible properties, optically clear, adhesion to difficult substrates and many more. With such a wide variety of applications and unique characteristics our silicone sealants and adhesives rely on three main curing process: room temperature vulcanization (RTV), heat curing, and UV curing.

Room Temperature Vulcanization (RTV) Silicone Sealants & Adhesives

Room Temperature vulcanization (RTV) silicones are compounds that cure at room temperature. RTV silicones are classified as condensation-curing materials. This means that as soon as the material meets the moisture in the air the curing, or chemical process of cross-linking, immediately begins. Manufactured in both 1- and 2-part systems.

Heat Cured Silicone Form In Place Gasket

Heat Vulcanized/Cured Silicone Sealants & Adhesives

Heat cured silicones are compounds that cure with the addition of heat. This form of curing is ideal when you need greater control and processing flexibility. Manufactured in both 1- and 2-part formulations enable adhesion in as little as 20-30 minutes at temperatures of 150°C. Select, high-performance products can cure within minutes at 150°C.

UV Vulcanized/Cured Silicone Sealants & Adhesives

UV cured silicones are compounds that cure with the addition of UV light that initiates the curing process. This means that the silicone sealant or adhesive must be exposed to some form of UV light. Once exposed to the UV light some silicone products can take set within seconds. Typically, a longer period of 24-72 hours is required for a complete cure of the product. This process allows for a low temperature curing process that drastically reduces reduced energy consumption in the production process and allows for high volume manufacturing to drastically improve production time.

Silicone Sealant & Adhesive Products Talk to a Silicone Expert

Silicone Encapsulating & Potting

Encapsulation is the process of creating a protective shell around an application. Commonly used in electronics to protect them from the common elements that can cause damage. Encapsulation provides resistance to shock and vibration, as well as creating a seal against moisture, solvents, corrosive agents, electrical insulation, flame retardant and heat dissipation.

Potting is a process similar to encapsulation. The goal remains the same in creating a protecting for the application with a silicone product. The only difference is that instead of creating a protective shell, potting is traditionally poured into an enclosure for the purpose of providing resistance to shock and vibration, as well as creating a seal against moisture, solvents, corrosive agents, electrical insulation, flame retardant and heat dissipation.

Silicone Encapsulating & Potting Products Talk to a Silicone Expert

Electrically & Thermally Conductive Silicone

Electrically conductive silicones are compounds developed to act as a conductor of electricity. Generally offering a volume resistivity range of .003 - 10 (Ohms cm). Electrically conductive materials are generally used in situations where EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference) is present. It can also be used to help prevent the buildup of static charge in applications.

Thermally Conductive silicone's are compounds developed with the ability to transmit heat, generally offer a thermal conductivity of .3 to 4.3 W/m-K. Thermally conductive silicone's can be found in smart phones, Led lights, computer devices and large stadium screens.

Electrically & Thermally Conductive Silicone Products Talk to a Silicone Expert

Silicone Coatings

Silicone coatings are used to preserve and protect a wide range of applications and can adhere to many materials including masonry, ceramics, metals, plastics, and wood. Coatings can be applied in many forms such as dipping, spray, or rubbing. Silicone coatings can be found in many industries including marine haul coatings, deck and cement coatings, high temperature coatings, electronic coatings, vehicle coatings and many more.

Silicone Coatings Products Talk to a Silicone Expert

Custom Silicone Solutions

Our sales team, chemists, and engineers are ready to work with you in selecting the perfect product that meets your specific applications requirements. We utilize on our in-depth Silicone knowledge as a competitive advantage to not only ensure the proper product is selected, but develop new product solutions for our customers.

Our custom capabilities range from matching a specific color to developing a completely new silicone formulation to meet your needs.

Talk to a Silicone Expert