TRI-Seal®

Torque Retention Isolation Sealing Solutions

TRI-Seal® introduces rigid spheres into expandable sealant materials which are used to seal interfaces where faster load retention and/or separation of dissimilar materials are important.

What is TRI-Seal®?

Torque Retention Isolation Sealing Solutions (TRI-Seal®) is engineered to provide torque retention and isolation at interfaces where load retention and/or separation of dissimilar materials is important, and robust sealing against water, air and dust intrusion is required.

TRI-Seal® is made up of non-conductive Alumina rigid spheres dispersed into L&L’s sealant materials. There are two different forms: dry-to-the touch and tacky. TRI-Seal® dry-to-the-touch requires heat to activate the expandable sealant material. TRI-Seal® tacky does not require heat and self-adheres to a mating surface. Torque retention is achieved by the clamp force between substrates being supported by the rigid Alumina spheres. The result, a unique product that is capable of torque retention, isolation, and sealing all at the same time.

TRI-Seal® – Torque Retention Isolation

TRI-Seal™ Corrosion Resistance

Effectively prevents corrosion by providing an isolation barrier. The spheres keep dissimilar material substrates separated while the sealant prevents exposure to electrolytic solutions.

Without TRI-Seal®

Significant Corrosion

With TRI-Seal®

No Corrosion

Key Product Attributes

The robust sealing solution engineered for load retention and/or separation of dissimilar materials.

Sealing from water, dust, and air
<3% torque fall-off
No conductivity or galvanic corrosion
0.5 mm thick
Dry to the touch or tacky
Can be heat-bonded (for dry solution)
Pressure sensitive (for tacky solution)

Discover

The robust and lightweight sealing solution with maximum sealing coverage and anti-corrosion features.

Light-weighting

Promote Light-weighting

Promote light-weighting by allowing the combination of dissimilar metals while providing an isolation barrier, preventing corrosion caused by galvanic reactions.

Sealing

Robust Sealing Against Water, Air and Dust

Expanding sealant ensures robust sealing against water, air and dust intrusion including small capillary paths common in threaded joints and line-to-line conditions.

Fastener Clamp Forces

Maintain Fastener Clamp Forces

Rigid spheres provide a direct load path to maintain fastener clamp forces regardless of sealer expansion.

Product Solutions

In order to meet specific application requirements, we offer both dry and tacky solutions. For the dry to touch seal, the sealing material is thinner than the spheres to ensure the contact with the metal. For the tacky seal, a thicker seal can be achieved so that the material can flow under clamp load to ensure maximum sealing coverage.

Dry-to-the-touch TRI-Seal®

Laser cut and sold in rolls or sheets
Heat bonded to a mating surface or interference fit on a bolt or stud
Seal material thinner than spacers to ensure contact with mating panels

Tacky TRI-Seal®

Rotary die-cut
Self-adhere to a mating surface
Ability to locally concentrate the rigid spacers in areas where required
Seal material thicker than spacers to allow flow under compression for maximum sealing coverage
Customized engineered option (Lock Seal) to increase slip force

Typical Applications

With over 50 years of sealing experience, our experienced engineering team works closely with our customers to develop tailored solutions that meet their specific requirements for a wide range of applications.