EnerSEAL® 340R Hot Melt Perimeter Sealant

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EnerSEAL® 340R

Reactive Thermoset Hot Melt Insulated Glass Sealant

EnerSEAL® 340R

Reactive Thermoset Hot Melt Insulated Glass Sealant

EnerSEAL® 340R reactive warm-applied sealant is a modified polyurethane IG perimeter barrier sealant that combines the ease of handling and speed of a single-component hot melt with the shear and heat resistance of a reactive polyurethane.

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Benefits of Using EnerSEAL 340R in Your Next Project

Single Component

Thermoset compounds that fully cures into rubber

Low Permeability

Provides longer seal integrity

Ease of Use

Suitable with both manual gunning and automatic applications

EnerSEAL 340R Is Best For

Glass
Aluminum
Galvanized steel
Stainless steel

Rigid polymeric warm-edge spacers
Manual and automated applications
Warm-edge spacers
Single- or dual-seal IG

Larger IG or where higher curative strength and shear is required

Product Properties

Application Temperature	257 to 302 °F (125 to 150 °C)
EN1279-4 G: Moisture Vapor Transmission	< 0.25 g/m²/24 hr
Shelf Life	12 mo

EnerSEAL 340R Resources

Download any of these featured resources or find a specific type of document below.

Data Sheet

Product Literature

Safety Data Sheet

Technical Bulletin

Frequently Asked Questions

EnerSEAL 340R can be processed on any standard hot melt extrusion machine currently used in the insulating glass industry. The product must be applied on a clean and dry substrate.

Reactive hot melt requires a chemical reaction to cure. This process is slower than the air cure process that traditional hot melts require. Although it takes longer to cure, reactive hot melt creates an extreme strong bond so it may be ideal for units that need to be shipped long distances or are sealing larger units.

257 °F to 302° F (125 °C to 150 °C)

MVTR - Moisture Vapor Transmission Rate. This is measure of the passage of water vapor through a substance. Excluding moisture from the interior of a unit ensures that the view through the window is clear and keeping moisture out will help extend the life of the sealed unit.

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EnerSEAL® 340R

EnerSEAL® 340R

Benefits of Using EnerSEAL 340R in Your Next Project

Product Properties

EnerSEAL 340R Resources

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Frequently Asked Questions

How is EnerSEAL 340R applied?

What is the difference between EnerSEAL 332 and EnerSEAL 340R?

What is temperature is EnerSEAL 340R applied at?

What is MVTR and why is it important?

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