The corrosion problems experienced by aviation components, assemblies, and surfaces are due to environmental factors: moisture, thermal and altitude cycling, or chemical and electrochemical attacks. These corrosive agents such as moisture and chemical residue attack both external surfaces and internal structures in aircraft, leading to damages that weaken assemblies or loosen adjacent parts that, if left unchecked, could cause complete structural failure. This is why the use of injectable sealants is recommended in the Federal Aviation Administration's (FAA) Flight Standards Service Aviation Maintenance Handbook. Av-DEC injectable sealants were formulated for quick and easy application during aircraft production installation as well as aviation repair and maintenance activities.
Av-DEC is renowned for its polyurethane and polyurea injectable sealants. Some of the 2-part injectable sealants available include: Self-Leveling Green, TufStuff™, Self-Leveling Red, Thixoflex Orange and Thixoflex Gray and Thixoflex Black. These solutions are formulated to serve as protective seals for surfaces, adjacent parts, and assemblies susceptible to corrosion. The benefits of Av-DEC diverse range of polyurethane and polyurea injectable sealants include:
Av-DEC inventory of injectable sealants come in the standard application cartridge of 50 cubic centimeters (50cc). If the aircraft requires a larger cartridge, the 200cc cartridge and the corresponding application tool option are also available.
High-performance polyurethane injectable sealants are formulated to offer sustainable protection for component surfaces. The flexibility of polyurethane makes it a versatile seal in high-pressure environments. The impermeability of polyurethane means it keeps out moisture, water, and chemical elements. Users stand to gain the following benefits by using a polyurethane injectable sealant:
Av-DEC Self-Leveling Green two-part or two-component injectable sealant is polyurethane-based. This polyurethane injectable sealant creates a watertight environmental seal for avionics components. The low viscosity of this injectable sealant ensures quick application when real-time maintenance is needed. Self-Leveling Green also protects surfaces from abrasions and creates an even surface when applied. It is also easily removed whenever the need arises. This eliminates repair downtimes and any application troubles.
As the name suggests, TufStuff™ is designed for use as a rigid sealant to completely protect surfaces and voids from corrosion. The sealant is made from polyurethane and integrates the flexible and impermeable features attached to the base material. The sealant provides a weathertight, abrasion-resistant solution when applied to areas where traffic is expected. TufStuff™ protects the area of its application from environmental factors that cause abrasions. It is also easy to apply and remove during regular inspections and maintenance tasks.
"Thixoflex" sealants are formulated to deliver excellent adhesion, high resistance to abrasions, and durability when applied. These properties are why polyurethane sealants are used as coating solutions or environmental sealants depending on the mode of application. Av-DEC two-component polyurethane injectable sealants provide excellent protective seals for aircraft components. They are easily applied and removed from surfaces positioned vertically or overhead without succumbing to the pull of gravity or other environmental factors. The benefits from using a polyurethane injectable sealant include:
Av-DEC Thixoflex Orange and Thixoflex Gray are two-component injectable polyurethane sealants that provide excellent sealing against moisture and other environmental factors. Choosing to implement these solutions yields the benefits associated with polyurethane in applications. Thixoflex Orange and Thixoflex Gray are the best options for vertical applications and overhead or hanging components. Thixoflex Orange and Thixoflex Gray are complete environmental sealants that keep out moisture, fill up voids, and resist wear.
Polyurea is a remarkable material used for the speedy sealing of joints and surfaces in aircraft. Its use is due to its high resistance to abrasions and ability to prevent corrosive agents from accessing surfaces. When applied, polyurea sealants protect application surfaces at an exceptionally quick pace compared with conventional sealants. Some of the advantages from using an injectable polyurea sealant include:
Av-DEC Thixoflex Black is an injectable polyurea sealant that integrates all the benefits of its base material. The two-part corrosion inhibiting formula is highly viscous and seals in record time. This makes for the quickest sealing of vertical surfaces, cracks, and voids against corrosion and water seepage. This injectable sealant is easily applied and removed without having to deal with hazardous residues that can cause corrosion.
Polyurethane and polyurea injectable sealants are examples of the organic materials available, while silicone is inorganic. These materials are regularly used in sealing surfaces and assemblies against corrosion, which might make choosing the best option for aviation repairs difficult.
The major differences are:
Every application of an Av-DEC injectable sealant completes a durable two-component seal for long-term use. In situations where no further repairs are needed, Av-DEC injectable sealants provide maximum protection against corrosion for over a decade.
Learn more by contacting our sales representatives and technical teams today. Av-DEC can also provide a sample for evaluation.