HI-TAK^® StructureSeal^®

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Pre-cured polyurethane rolled sealant (PRS) engineered to protect aircraft structures during installation, repairs, and maintenance.

Over the last 20 years, Av-DEC sealants have been used by original equipment manufacturers and maintenance bureaus to protect private, commercial, and military aircraft from corrosion. As such, it's safe to say that Av-DEC has mastered the science behind corrosion defense and the latest addition to the polyurethane rolled sealants (PRS) portfolio proves this even further. The HI-TAK StructureSeal consists of a series of PRS products that deliver a complete barrier against moisture and corrosion.

HI-TAK StructureSeal is designed to serve aviation installation, repair, and maintenance needs for the long haul. This PRS product offers multiple options. Customers may choose to use the HT4000 series and HT6000 of HI-TAK StructureSeal PRS to create a moisture barrier on surfaces like floorboards, and in lavatories and galleys. In addition, the HT4000 and HT6000 series can be used as a mechanical stop or for crush-resistance alongside corrosion-prevention duties. Both options are available as flame retardant or non-flame retardant PRS. The advantages of using HI-TAK StructureSeal are:

• A quick installation process that requires no solvents and embodies the Av-DEC "apply-and-fly" philosophy.
• It is a non-hazardous sealant that, when removed, leaves behind no residue that might affect paint adhesion.
• This pre-cured sealant can be die-cut and used as a gasket when applied to create a complete protective seal against corrosion.
• The straightforward application does not require the use of any special application tool, thus shortening the application process.

Making the Transition from Tape to Polyurethane Rolled Sealant

Since their inception, Av-DEC rolled sealants were known as the HI-TAK Tape series. This ended up being a bit confusing as these products could be mistaken for more average industrial tapes in circulation. The need to ensure customers understood the difference between industrial tape and the HI-TAK Tape series prompted the name change. The engineers at Av-DEC put their heads together and came up with a more explanatory name: polyurethane rolled sealant (PRS). This name better highlights what HI-TAK StructureSeal PRS brings to the table.

Built to Provide Total Protection from Corrosion

Losing the battle against corrosion leads to extensive structural damage, downtime, and significant financial investments on repairs and maintenance. In order to drastically reduce moisture ingress and the negative effects of corrosion, HI-TAK StructureSeal was engineered with polyurethane and a non-conductive carrier with crush-resistant properties. This means that, upon application, users get an environmentally-friendly PRS which delivers complete protection in extreme aviation conditions.

The HI-TAK StructureSeal HT4000 and HT6000 single-sided options consist of a tacky surface and a non-tacky backing made from polytetrafluoroethylene (PTFE). This makes it an excellent sealant to use in areas where some maneuverability is required. The HT4935 and HT6935 double-sided options are equipped with two tacky surfaces. All four options (HT4000, HT6000, HT4935 and HT6935) are best used when a mechanical stop is required. Some of the benefits of using the HT4000 series and HT6000 series PRS include:

• The durable sealant can provide complete protection under extreme conditions, fluctuating temperatures, and vibrations.
• Resistance to abrasion ensures a protective seal is formed and continues to function optimally through long-term use.
• These sealants can provide noise-dampening or noise-canceling protections when applied between surfaces.

Designed for Diverse Aviation Applications

The HI-TAK StructureSeal PRS is designed for use in diverse situations as an environment- and surface-protection sealant. This gives users the option of applying either the HT4000 or the HT6000 on diverse surfaces, perimeters, or aircraft structures. These Av-DEC PRS products are ideal for protecting:

• Stringer tops in lavatories
• Galleys
• Door sills
• Cargo bay structures
• Cargo tie-down gaskets