Non-Vulcanized Butyl Hot-Melt Sealant

Product Description

The Non-Vulcanized Butyl Hot-Melt Sealant is a high-performance, non-curing, thermoplastic sealing compound formulated to deliver reliable sealing in a wide range of industrial, construction, and automotive applications. Unlike vulcanized rubber sealants, this butyl hot-melt version does not undergo chemical crosslinking, which means it remains permanently flexible, soft, and repositionable—even after long-term use.

This sealant is applied in a molten state and quickly sets to form a durable, tacky bond upon cooling. It adheres excellently to various substrates such as glass, aluminum, galvanized steel, plastic, wood, and concrete. The non-vulcanized nature of the product ensures easier handling, reusability, and superior compatibility with systems that require joint movement or future maintenance.

Key Features

Non-Vulcanized Structure: Remains permanently elastic without hardening, cracking, or becoming brittle over time.

Strong and Flexible Seal: Offers excellent sealing against water, air, dust, and vibration with long-term performance.

Repositionable & Reworkable: Easy to remove and reapply—ideal for joints or structures requiring periodic adjustments.

Fast Application: Applied hot and sets quickly on cooling, speeding up installation and reducing downtime.

Adheres to Multiple Substrates: Compatible with metal, glass, plastic, wood, and masonry without the need for primers.

Weather and UV Resistant: Suitable for use in exterior environments exposed to sunlight, rain, and temperature swings.

Low VOC and Safe Use: Contains no solvents or hazardous compounds—suitable for indoor and environmentally sensitive applications.

Typical Applications

Window and Door Sealing: Seals frames and joints while allowing future removal without damaging the substrate.

Automotive Assembly: Used for non-permanent sealing of lights, panels, and trim parts that may require future access.

Modular Construction & Prefab Housing: Allows temporary or permanent sealing in transportable and reconfigurable structures.

Refrigeration & HVAC Systems: Seals access panels and duct joints where disassembly may be needed.

Electronics & Enclosures: Used to seal instrument panels, control boxes, and lighting assemblies without curing-related stress.

Facade & Roofing Systems: Weather-resistant sealing of metal, glass, and concrete joints with flexible performance.

Technical Specifications

Property Value

Appearance Black / Grey / Custom

Application Temperature 150°C – 180°C

Operating Temperature Range -40°C to +90°C

Peel Adhesion (Aluminum) ≥1.5 N/mm

Elongation at Break ≥300%

Softening Point ≥100°C

VOC Content <10 g/L (Solvent-free)

UV & Aging Resistance Excellent

Shelf Life 12 months (sealed, cool storage)

Storage & Handling

Store in a dry, shaded environment at temperatures below 35°C. Avoid direct sunlight and moisture. Use hot-melt applicators with controlled temperatures (150–180°C) for best performance. Avoid prolonged overheating to maintain quality.

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.

Non-Vulcanized Butyl Hot-Melt Sealant

FAQ (Frequently Asked Questions)

Q1: What does “non-vulcanized” mean in this context?

A1: It means the sealant has not undergone chemical crosslinking (vulcanization), so it remains soft and elastic rather than turning rubbery or rigid over time.

Q2: Will the sealant cure or harden after application?

A2: No. This is a non-curing, thermoplastic material that remains permanently pliable and tacky for flexible sealing performance.

Q3: Can it be removed or repositioned after application?

A3: Yes. One of its key benefits is that it can be removed and reapplied without damaging surfaces—ideal for temporary seals or parts requiring future access.

Q4: Is it suitable for outdoor environments?

A4: Yes. It has excellent resistance to UV rays, moisture, and temperature fluctuations, making it suitable for long-term exterior use.

Q5: What equipment is needed for application?

A5: It should be applied using a hot-melt applicator or extrusion system set to 150–180°C. Manual or automated equipment can be used based on production needs.

Q6: Does it contain harmful chemicals or solvents?

A6: No. It is solvent-free, low in VOCs, and safe for both indoor and enclosed environments.

Q7: What surfaces does it work best with?

A7: It adheres well to aluminum, stainless steel, glass, plastics like PVC and ABS, wood, and many concrete and coated surfaces.

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.