Non-Blackening Butyl Hot Melt Sealant Manufacturers, Suppliers

Product Description

The Non-Blackening Butyl Hot Melt Sealant is a specially engineered, non-curing sealant formulated to maintain cleanliness, appearance, and long-term sealing performance. Unlike conventional butyl-based sealants, this version is developed with anti-oxidation and anti-carbonization additives that prevent black stains, smears, or residue over time, making it ideal for applications that demand aesthetic integrity and clean finishes.

This sealant is thermally applied and cools rapidly to form a durable, flexible, and highly adhesive bond. It remains permanently tacky and elastic, offering outstanding sealing performance against air, water, and dust. It is compatible with a variety of substrates including glass, metal, plastics, wood, and concrete—making it widely applicable in industries such as construction, automotive, electronics, and appliance manufacturing.

Key Features

Non-Blackening Formula: Prevents surface smearing, residue, or edge discoloration—ideal for visible or decorative installations.

Excellent Sealing Performance: Delivers superior protection against moisture, air, dust, and noise intrusion.

UV & Oxidation Resistant: Does not degrade or blacken due to sunlight or oxygen exposure over time.

Flexible & Non-Curing: Maintains elasticity, does not harden or crack, and allows for natural joint movement.

Clean Handling: No oil migration, staining, or sticky residue after application.

Strong Substrate Adhesion: Bonds well to various surfaces including aluminum, stainless steel, glass, polycarbonate, and painted metals.

Low VOC & Environmentally Safe: Free of harmful solvents and odors—safe for indoor and sensitive applications.

Typical Applications

Decorative and Visible Joints: Window frames, glass facades, curtain walls, and interior decorative panels where cleanliness matters.

Electronics and Appliances: Sealing control panels, LED modules, and sensitive electronics without risk of staining or conductivity issues.

Automotive Components: Suitable for headlamp assemblies, interior trims, and dashboard units where visible seal lines are present.

Glass Assembly and Partitioning: Clean bonding for architectural and commercial glass structures.

HVAC and Ventilation Systems: Seals ductwork and insulation with a non-staining finish.

Solar Modules & Lighting Units: Ideal for sealing clear covers and enclosures that require a neat, stable appearance.

Technical Specifications

Property Value

Appearance Light Grey / Off-White / Custom

Application Temperature 150°C – 180°C

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

Peel Adhesion (Aluminum) ≥1.5 N/mm

UV Resistance Excellent

Elongation at Break ≥300%

Oxidation Resistance High

Non-Blackening Stability ≥1000 hours accelerated aging

VOC Content <10 g/L

Shelf Life 12 months (sealed)

Storage & Handling

Store in original packaging in a dry, shaded, and cool environment. Avoid high humidity and direct sunlight. For best performance, use a hot-melt applicator with adjustable temperature control between 150°C and 180°C.

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-Blackening Butyl Hot Melt Sealant

FAQ (Frequently Asked Questions)

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

A1: It means the sealant is specially formulated to resist oxidation and surface contamination that typically leads to black stains or streaks on surfaces over time, especially on glass and light-colored materials.

Q2: Can this sealant be used in glass curtain walls or interior glass walls?

A2: Yes, it is ideal for such applications due to its clean finish and excellent adhesion to glass and aluminum frames without smearing or discoloration.

Q3: Does it harden or cure over time?

A3: No. This is a non-curing, thermoplastic sealant. It remains flexible and tacky to accommodate movement and maintain sealing over the long term.

Q4: Is it suitable for high-humidity or exterior use?

A4: Yes. It resists water, UV exposure, and environmental changes, making it suitable for both indoor and outdoor use.

Q5: How do I clean excess material during or after installation?

A5: While still warm, wipe with a dry or slightly oiled cloth. Once cooled, peel it off gently or use a plastic scraper. Avoid using abrasive cleaners.

Q6: Does it leave any greasy or sticky residue?

A6: No. Its non-migrating formulation ensures no oil bleed, greasy surface, or staining—perfect for visible and precision-sealing applications.

Q7: Is it available in different colors?

A7: Yes. Common options include light grey, white, or custom shades upon request to match aesthetic requirements.

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.