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Top Benefits of Using Leak-Proof Sealants by ThreeBond for Reliable Performance

Preventing leaks is crucial in automotive engines, electric vehicles, electronics and industrial machinery. ThreeBond sealants form durable barriers that fill all gaps and cure into elastomeric seals, ensuring 100% contact between mating surfaces .. As a leading sealant manufacturer, ThreeBond’s products are designed to stop inner fluids from escaping through joints or openings . By applying a liquid gasket bead (a Form-In-Place Gasket, or FIPG) to flanges and seams, the sealant cures in place to conform perfectly to the surfaces, preventing any oil, coolant or gas leaks. This results in a flexible, long-lasting seal that also absorbs vibration and cushions shocks, improving joint durability under harsh conditions. Let’s explore how Leak-Proof Sealants by ThreeBond play a vital role in enhancing reliability, preventing failures, and ensuring long-lasting performance across industries.

Key features of ThreeBond’s Leak-Proof Sealants:

• Complete Flange Sealing: ThreeBond FIPG liquid gaskets spread into surface irregularities to provide a continuous seal. Because the cured gasket fills 100% of the joint area, it prevents leaks that would bypass a hard gasket. Unlike cut gaskets, ThreeBond beads require no torque or compression and bond without gaps .
  
• Vibration & Shock Resistance: Once cured, the rubber-elastic sealant absorbs vibration and impact stress, protecting the joint against loosening or fatigue. This elasticity lets the sealant relax as parts expand or contract, maintaining the seal over time. For example, ThreeBond’s elastic adhesives (like TB1535) are formulated so that the cured seal has excellent peel strength and vibrating/impact stress relaxation properties.
  
• Heat & Chemical Stability: Many ThreeBond sealants withstand extreme temperatures and chemicals. Products like TB1207B and TB1216E (silicone FIPG) are rated from –60°C up to +250°C. TB1160 (a modified sealant) is tin-free and offers excellent heat, cold and chemical resistance. This broad tolerance keeps seals intact across engine hot/cold cycles or in contact with oils and coolants.
  
• No Corrosive Byproducts: Several ThreeBond formulations are dealcoholized and non-sag, so they cure without releasing acidic or corrosive gases. For instance, TB1160 and TB1220G are dealcoholized, [with] no corrosive influence on metallic or plastic parts. This protects sensitive components like electronic housings or polished metal surfaces during curing and service.
  
• Flexibility & High Elongation: ThreeBond sealants stay elastic after curing. Notably, the flame-retardant TB1167 resin (for battery cases) cures to a material with about 300% elongation . High flexibility means the sealant can stretch and compress with moving parts without cracking. ThreeBond adhesives like TB1535 are designed so that even after cure, the bond can stretch and relax, ensuring excellence, stress relaxation under vibration.
  
• Flame-Retardant Options: Some ThreeBond products are UL94 V-0 flame-rated. For EV battery and electronics enclosures, ThreeBond’s non-silicone TB1167 was developed to meet UL94 V-0 standards.  It is free of low-molecular siloxanes and organotins, yet provides excellent heat resistance and flexibility, meaning it will resist ignition and maintain a seal even in a fire scenario .

• Regulatory Compliance: By avoiding volatile silicones (D4–D10) and toxic tin catalysts, ThreeBond sealants meet stringent regulations. Products like TB1160 does not contain low-molecular cyclic siloxane, making them safe near electrical contacts. This non-silicone formulation also avoids silicone outgassing or drift that can foul sensors. Many ThreeBond sealants are also tin-free and REACH-compliant .
  

Automotive & Industrial Machinery Applications

In cars, trucks and heavy equipment, ThreeBond FIPG sealants are widely used on engine oil pans, transmission housings, pumps and hydraulic components. For example, ThreeBond silicone FIPG grades such as TB1207B and TB1216E are formulated for oil pans and water pumps, tolerating –60°C to +250°C while resisting engine oils and coolants. This means the cured bead won’t harden or leak under high under-hood temperatures. ThreeBond’s silicone formulas bond strongly to both metals and plastics without corroding them so they can seal mixed-material engine components reliably. In heavy machinery (construction, agriculture, mining), large flange joints often require wide gaps to be sealed. ThreeBond’s modified silicones (1200 series) and special polymer adhesives can fill these wider gaps and remain flexible even on large gearboxes and pumps . Across all equipment, a cured ThreeBond seal provides a durable, leak-proof joint where solid gaskets or RTVs might fail. Diagram suggestion: Cross-sectional sketch of an engine oil pan flange sealed with ThreeBond FIPG, showing the continuous sealant bead filling the gap.

Electric Vehicle (EV) Battery and Powertrain Sealing

EV battery packs and inverters use many seals to keep out water, dust and to isolate hazardous voltages. ThreeBond offers specialized EV battery enclosure sealants designed for these applications. These sealants are used to seal battery cases against moisture and debris while also managing heat and vibration. They help regulate heat dissipation, dampen noise, and maintain battery life. For example, a high-performance FIPG like TB1167 was created for battery case flanges. It cures to a flame-retardant, highly elastic gasket (UL94 V-0, ~300% elongation) without any solvent off-gassing. This protects battery packs in an accident or fire and meets global safety standards. ThreeBond 1160 (a tin-free, silyl-polymer sealant) is also used around high-voltage components; it has excellent heat, cold and chemical resistance and contains no cyclic siloxanes, making it ideal for sensitive EV powertrain seals.

EV sealants also simplify assembly. Liquid gasket dispensing allows automated, consistent application on battery pack lids or inverters, reducing manual errors. ThreeBond’s EV enclosure sealants are even designed to blend seamlessly with existing operations and meet the rigorous standards of the automotive industry , meaning they can scale to high-volume EV production.

Electronics and Small Device Sealing

In electronics (mobile phones, computers, appliances), leaks may be rare but corrosive ingress or vibration damage must be prevented. ThreeBond’s electronics-grade sealants and potting materials provide safe, non-corrosive insulation. Many ThreeBond silicones for electronics cure at room temperature into rubber-like bonds that insulate and absorb shock . For instance, ThreeBond 1220G is a silicone RTV sealant that is dealcoholized (so it won’t corrode circuit boards) and cures quickly into a thick-film, flexible seal . It has excellent heat and cold resistance and low volatile siloxane content, making it suitable for sealing connectors and sensor modules. Other products like TB1225B are one-part RTV adhesives for PCBs that dry rapidly and do not affect metals or plastics , ensuring components stay in place without damage. ThreeBond sealants can also provide moisture-proof coatings or encapsulate components to protect against humidity and leakage. Overall, these materials maintain electrical reliability and prevent solder joints or chip packages from corroding or detaching under thermal cycling .

Why ThreeBond Stands Out

Non-Silicone Formulations: Many ThreeBond sealants are deliberately non-silicone (they contain no D4–D10 siloxanes). This is critical around sensitive contacts. For example, ThreeBond 1160 is a modified silyl-polymer (not a traditional silicone) and does not contain low-molecular cyclic siloxane, so it can safely contact electronics . Being tin-free and low-odor, it won’t poison sensors or metal surfaces during curing.

Flame Retardance: EV and aerospace applications often demand flame-resistant seals. ThreeBond 1167 and similar grades achieve UL94 V-0 rating. In tests, TB1167 maintained high elongation after heat exposure while a conventional urethane lost its flexibility. This means ThreeBond seals stay intact even under fire or thermal stress.

Low Corrosion: Unlike cheap silicones that release acetic acid or alcohol while curing, ThreeBond’s neutral-cure silicones and polymer adhesives are dealcoholized. For example, TB1220G has no corrosive influence on metallic or plastic parts. Similarly, TB1160 is formulated to be less corrosive to metals. This protects engines, electronics, and paint finishes during assembly

Extreme Flexibility: ThreeBond emphasizes long-term elasticity. TB1167’s cured seal stretches up to ~300% without tearing . Likewise, three-component adhesives like TB1535 cure into rubbery bonds with excellent elongation. High flexibility translates to outstanding vibration tolerance and fatigue resistance. It also allows seals to accommodate thermal expansion and contraction without cracking.

Long-Term Durability: By selecting stable base polymers and curing methods (moisture, heat, UV, etc.), ThreeBond products retain strength over years. In durability tests at 120°C, TB1167 showed minimal loss of elongation even after 500 hours, whereas a standard urethane would fail. Many ThreeBond seals maintain UL94 V-0 rating and mechanical integrity through extended heat/cold cycles.

Combined, these features mean ThreeBond sealants deliver reliable, leak-proof performance even in harsh environments. Whether it’s an engine that must never drip oil, an EV battery pack that must never short, or an appliance that must never corrode, ThreeBond products form seals engineers can trust.

Get Started with ThreeBond Sealants

With a broad product line (1100-series liquid gaskets, 1200-series silicones, 1500-series polymers, etc.), ThreeBond provides high-performance solutions for every sealing need . Our products help OEMs eliminate leaks, reduce rework and save costs by minimizing scrap from seal failures.

Ready to seal the deal? To explore ThreeBond’s leak-proof sealants for your application – be it an engine, an EV battery, an electronics chassis or industrial machinery – contact a ThreeBond representative today. Our experts can help select the right FIPG liquid, RTV or adhesive for your design. By choosing ThreeBond, you choose proven leak-blocking performance in real-world conditions.