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Sealing Without Compromises

L&L Seal

Sealing Without Compromises

L&L Products develops sealing materials to enhance a component’s durability by preventing water ingress, pollutants and odors from intruding.

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L&L Seal
Offering robust sealing solutions for 50+ years

In the 1970s, we developed heat-activated polymeric sealing materials. Since then, we have worked consistently on optimizing our sealing technology by leveraged our polymer science and adhesion technology expertise and expanded our portfolio offerings.

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Are you interested in our seal solutions? We look forward to a conversation!

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Seal Solutions

Our custom-formulated sealing materials are designed to completely fill and seal a cavity to prevent the intrusion of water, air, dust and fumes into the interior. By sealing even the most complex cavities, our solutions help to reduce metal body corrosion associated with water leaks and reduce noise, vibration, and harshness (NVH).

Ambient Curing Sealants

About

In addition to our Heat-Activated Sealants, we broadened our offerings by providing a series of innovative one-component sealants that completely cure at room temperature. Our Ambient Curing Sealants can be offered with an accelerator paste. The materials have a wide range of mechanical properties, from elastic sealants to creep-resistant elastic low-strength adhesives.

L&L Ambient Curing Sealants are free of solvents, VOCs, and toxic isocyanates. Our sealants allow for direct adhesion to many substrates without primers or pretreatments.

Key Attributes

  • Void free curing
  • FST regulation compliant - EN45545-2 for rail
  • Wide range of available cure speeds
  • Broad range of available physical properties
  • Dispensing and full cure at room temperature
  • Available in cartridges, sausage packs, pails, and drums
  • Available in white, grey, and black color

Benefits

  • Robust primerless adhesion to composites and metals for optimum acoustic and anti-corrosion sealing
  • Low toxicity, including solvent-free, VOC-free and Isocyanate-free
  • Low shrinkage for reduced rework on bonded structures

Applications

Composites

Composites

  • Common composites
  • Metals
  • Fiberglass
Bus and Rail

Bus and Rail

  • Large, heavy windows
  • Cassette window bonding
  • Windows in light applications such as caravan, RV, construction, and agricultural vehicles

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Heat-Activated Sealants

About

Our Heat-Activated Sealants consists of both rubber-based and polyolefin-based materials used for filling and sealing highly complex cavities to prevent water, air, dust and fumes from intruding. Our portfolio includes varying levels of expansion, density, and cell structure once heat is applied.  

We offer a wide range of Heat-Activated Sealants meeting specific customer needs such as activation under various time-temperature profiles, adhesion to different types of substrates, and resistance to specific environmental exposure conditions.

In addition to our portfolio of Heated-Activated Sealants, we also provide a low cost, highly efficient and effective solution to add sealing properties to engineered fasteners using Powder Sealants. Powder Sealants provide a wide expansion range and closed cell structure.

Key Attributes

  • Engineered designs
  • Complex cavity sealing
  • Solutions available for low, medium and high bake temperature processes

Benefits

  • Superior adhesion
  • Reduces metal body corrosion associated with water leaks
  • Lightweight solution

Applications

Automotive and Commercial Vehicle

Automotive and Commercial Vehicle

  • Pillars
  • Roof rails
  • Rockers
  • Fuel fillers

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L&L TRI-Seal™ (Torque Retention Isolation Sealing Solutions)

About

TRI-Seal™ is made up of non-conductive Alumina spheres dispersed into L&L’s heat-activated sealant materials and is used to provide torque retention and isolation. This is especially important in areas where load retention and/ separation of dissimilar materials exists.

Torque retention is achieved through the clamping force between the substrates – ensuring isolation at material interfaces and optimum sealing against water, air, and dust.

TRI-Seal™ is available as dry-to-the-touch and tacky seal variations, both ensuring maximum sealing coverage and anti-corrosion features.

Want to learn more about TRI-Seal™? Visit our TRI-Seal™.

Key Attributes

  • <3% torque fall-off
  • 0.5 mm thick
  • Dry to the touch or tacky
  • Can be heat-bonded (for dry solution)
  • Pressure sensitive (for tacky solution)

Benefits

  • Maximum sealing coverage from water, dust, and air
  • No conductivity or galvanic corrosion

Applications

Automotive and Commercial Vehicle

Automotive and Commercial Vehicle

  • Door hinges/strikers
  • Hood hinges/latches
  • Lift gates/tailgate hinges
  • Bolted/riveted attachments
  • Dissimilar material interfaces

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L&L XiP (eXtrude-in-Place) Technology

About

Our eXtrude-In-Place (XiP) technology combines custom formulated chemistry with the capability of a fully automated application process. It involves extruding and applying an L&L formulation directly onto a substrate by robotic application.

XiP compatible materials offer good wash-off resistance. Beyond that, they are formulated to be dry-to-the-touch immediately after being extruded onto the substrate, which leads to improved handling and enables the customer to stack or nest several parts, resulting in minimized packaging costs.

Key Attributes

  • Dry-to-touch
  • Versatile design capability
  • Superior green state adhesion
  • Good wash-off resistance

Benefits

  • High level of repeatability for applications of varying complexity
  • Improved acoustic and sealing performance
  • Improved handling
  • Minimized packaging costs

Applications

Automotive and Commercial Vehicle

Automotive and Commercial Vehicle

  • Door beams
  • Roof bows
  • Front fender baffles
  • Rear lamp
  • Pillar closures
  • Fuel fillers

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