L&L SealOffering robust sealing solutions for 50+ years

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.

• 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

• 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

Composites

• Common composites
• Metals
• Fiberglass

Bus and Rail

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

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.

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

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

Automotive and Commercial Vehicle

• Pillars
• Roof rails
• Rockers
• Fuel fillers

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®.

• <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)

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

Automotive and Commercial Vehicle

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

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.

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

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

Automotive and Commercial Vehicle

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