Seal with Flexibility, Strength, and Durability

LOCTITE Flexible Sealants are high-performance elastomeric sealants engineered to create airtight, watertight, and long-lasting joints that can flex and move without cracking or losing adhesion. Designed for dynamic applications across construction, automotive, and industrial sectors, these sealants maintain sealing integrity even under vibration, expansion, and temperature cycling.

What Are Flexible Sealants?

Flexible sealants (also called elastomeric sealants) cure to a rubbery, flexible state that accommodates joint movement. Unlike rigid adhesives or cut gaskets, flexible sealants stretch and compress with the substrate, maintaining protection against air, moisture, and contaminants.

They are commonly used for expansion joints, seams, flanges, and panel joints—anywhere a seal must remain intact despite structural or thermal movement.

Benefits include:

• Absorbs vibration and joint movement

• Prevents leaks and corrosion

• Excellent adhesion to metals, plastics, glass, and masonry

• Resistant to UV, weathering, and chemicals

• Easy to apply with cartridge, brush, or spray

Ứng dụng điển hình

LOCTITE Flexible Sealants are trusted in multiple industries for reliable, flexible sealing:

• Construction: Expansion joints, façade seals, windows, curtain walls

• Automotive: Seam sealing, body joints, trim bonding, vibration isolation

• Industrial Equipment: Flange sealing, enclosure covers, flexible joints

• HVAC & Plumbing: Duct joints, pipe penetrations, moisture barriers

• Electronics & Enclosures: Sealing connectors, housings, and components

Why Choose LOCTITE Flexible Sealants?

• Outstanding Flexibility: Accommodates thermal expansion, contraction, and mechanical stress.

• Weatherproof Protection: Resists UV rays, water, and extreme temperatures.

• Broad Material Compatibility: Bonds to metals, glass, plastics, composites, and masonry.

• Durable Seal: Prevents air, water, and dust ingress over the long term.

• Ease of Use: One-part, non-sag formulas for vertical or horizontal applications.

How to Select the Right Flexible Sealant?

When choosing a flexible sealant, consider:

1. Substrate Material: Metal, glass, concrete, plastic, or composite

2. Expected Movement: Expansion, contraction, or vibration levels

3. Environment: Temperature extremes, UV exposure, or chemical contact

4. Curing Method: Room temperature, moisture, or hybrid cure

5. Hình thức: Transparent, black, or gray finish

Mẹo: For high-movement joints or outdoor use, silicone or SMP-based sealants provide the best elasticity and UV resistance.

Application Guide

1. Chuẩn bị bề mặt: Clean surfaces from oil, dust, or corrosion.

2. Masking: Apply masking tape for clean edges.

3. Ứng dụng: Apply a continuous bead using a cartridge gun or brush.

4. Tooling: Smooth the bead before skin formation.

5. Quá trình làm khô: Allow to cure fully (refer to product TDS for cure rate).

6. Inspection: Verify full cure before exposure to stress or fluids.