High Shear Strength Butyl Hot Melt Sealant Suppliers, Manufacturers

Product Description

The High Shear Strength Butyl Hot Melt Sealant is a premium-grade thermoplastic sealant specifically engineered for demanding industrial applications that require excellent mechanical bonding and long-term durability. Its formulation combines high-purity butyl rubber, tackifying resins, and reinforcing agents to provide outstanding shear strength, adhesion, and weather resistance.

Designed for use in structural and semi-structural bonding scenarios, this hot melt sealant is ideal for high-stress applications involving metal, glass, plastics, and composite materials. Whether used in automotive assemblies, architectural panels, or electrical enclosures, it provides a reliable and permanent seal that resists separation under mechanical load.

This product is applied in molten form and cools quickly to form a strong, flexible bond. Unlike traditional adhesives that cure chemically, this butyl sealant remains soft and pliable while maintaining robust holding power—especially under static or vertical load, where shear resistance is critical.

Key Features

High Shear Strength: Provides strong resistance against shifting or slippage under sustained loads and stress.

Excellent Adhesion: Bonds effectively to glass, aluminum, galvanized steel, PVC, wood, and other common materials.

Durable and Weather-Resistant: Withstands UV rays, moisture, heat, and aging without degradation or cracking.

Non-Curing, Reworkable: Remains thermoplastic and pliable for the product’s entire service life, allowing for future adjustments if necessary.

Vibration and Movement Resistant: Maintains bond integrity even under thermal expansion or mechanical vibration.

Solvent-Free: Safe, odorless, and environmentally friendly with no VOC emissions.

Technical Specifications

Base Polymer: Refined butyl rubber

Density: 1.4 – 1.6 g/cm³

Softening Point: 100 – 120°C

Application Temperature: 150 – 190°C

Shear Strength (ASTM D1002): ≥1.5 MPa

Color Options: Black, grey, custom available

Packaging: 5kg/10kg/25kg blocks; 200kg drum

Shelf Life: 12 months when stored properly

Applications

Automotive Industry: Used in vehicle body panels, headlights, trim parts, and interior assemblies that require shear resistance under movement or vibration.

Construction & Building: Ideal for curtain walls, metal façade systems, and sandwich panels subjected to shear stress due to wind load or thermal expansion.

Electronics: Sealing battery packs, component housings, or display units requiring structural sealing.

Aerospace & Transportation: Applied in aircraft interiors or high-speed train compartments to hold and seal components in dynamic conditions.

Appliance Manufacturing: For load-bearing joints and casing enclosures that face long-term mechanical stress.

Application Method

Preparation: Ensure all surfaces are clean, dry, and free of oil, dust, and moisture.

Heating: Melt the sealant using a hot melt applicator or tank heated to 150–190°C.

Dispensing: Apply a consistent bead of molten sealant to the bonding surface.

Assembly: Quickly join the components and press them together before the sealant cools.

Storage & Handling

Store in a dry, cool (5–30°C) area away from sunlight.

Keep away from open flames and high heat sources.

Wear protective gloves and avoid direct skin contact with molten material.

Close containers tightly when not in use to prevent contamination.

Deliver,Shipping And Serving

1. Online testing

Online testing will be carried out before the finished product is packaged, and the finished product will be packaged only after it meets the relevant requirements.

2. Quality control supervision.

Quality control will be carried out again before the finished product packaging is put into storage and enters the market.

3. Application testing

Carry out full product testing, from the user's perspective, restore the product application scenario, and test its application.

4. Technical service

Application technical service provides high-quality technical services. After the product enters the market, after-sales technical service will continue to track the product usage and provide high-quality after-sales service.

High Shear Strength Butyl Hot Melt Sealant

FAQ – Frequently Asked Questions

Q1: What does "high shear strength" mean in this sealant?

A: It refers to the sealant’s strong resistance to forces that try to slide one bonded surface over another. This is crucial in vertical or high-stress applications.

Q2: Can this sealant be used outdoors?

A: Yes, it has excellent UV, moisture, and temperature resistance, making it suitable for both indoor and outdoor use.

Q3: Is it suitable for structural bonding?

A: While not a replacement for epoxy or welding in load-bearing structures, it performs exceptionally well in semi-structural applications where movement and environmental sealing are needed.

Q4: Can the sealant be reheated for reuse?

A: Yes. The thermoplastic nature allows reheating and reapplication, provided it has not been contaminated.

Q5: Does it require any curing time?

A: No curing is required. The bond forms as the sealant cools, allowing for fast processing and assembly.

Q6: How does it compare to silicone sealants?

A: Unlike silicone, this butyl-based sealant does not cure or become brittle. It remains flexible and provides superior shear strength and reworkability.

Q7: Can it be applied manually or only via machines?

A: It can be applied using both manual hot melt guns and automated extrusion systems, depending on the scale of production.

Company Profile

Chengxin (Henan) Sealing New Material Tech Co., Ltd. is a Chinese manufacturer and supplier of insulating glass sealing materials. We have been professionally focusing on the sealing material industry for many years. With excellent product quality and a complete market service guarantee system, the company has formed a wide sales network in China. In the international market, "Chengxin" brand series products have been exported to Western Europe, America, the Middle East, Africa, Southeast Asia and other countries and regions. We look forward to becoming your long-term partner.