China PU Foam Sealant Supplier - OEM/ODM Quality Polyurethane Foam from Factory for Insulation and Sealing Applications

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China PU Foam Sealant Supplier - OEM/ODM Quality Polyurethane Foam from Factory for Insulation and Sealing Applications

PU foam sealant is a high-performance, economical one-component polyurethane foam widely used in the construction industry. Manufactured in China, this versatile sealant comes with a plastic adapter head, making it compatible with both foam application guns and straws. It serves multiple functions, including caulking, bonding, sealing, heat insulation, and sound absorption, This sealant is ideal for sealing leaks, filling gaps, and providing thermal and sound insulation. It is particularly effective for waterproofing and sealing between plastic steel or aluminum alloy doors, windows, and walls. Additionally, it can fill wide joints, gaps, and cracks while offering heat preservation, cold resistance, dryness resistance, and moisture resistance. As a reliable product from trusted suppliers, this PU foam sealant is perfect for various construction applications, ensuring effective performance and durability. Choose our factory-produced sealant for all your sealing needs

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Product Description

High-Performance PU Foam Sealant

Our PU foam sealant utilizes professional front-end foam filling technology. This innovative design optimizes glue application efficiency and significantly reduces bubble formation, ensuring a superior, uniform bonding effect for all construction needs.

Engineered for durability, it maintains an exceptionally strong bond in humid environments or under high temperatures, ensuring long-lasting performance.

Versatile Substrate Compatibility:
PVC Masonry Brick Glass Steel Aluminum Wood

*Not suitable for PE or Teflon surfaces.

Key Advantages

⚙️

Front-End Technology

Advanced foam filling technology minimizes air gaps and improves application speed for a perfect finish.

⚡

Ultra-Fast Drying

Surface dries rapidly, allowing users to proceed to the next stage of work without unnecessary downtime.

💪

Industrial Strength

Delivers a powerful bond across diverse materials, providing structural integrity and reliable sealing.

🌡️

All-Weather Curing

Formulated to cure effectively in various climate conditions, including high humidity and heat.

Packaging Options

📦 900ml

📦 500ml

📦 300ml

Parameter Specifications

Grade	Main Material Content	Volume / Weight	EXW Price (USD)
Grade A+	86%	300ml / 300g	$0.71
Grade B	66%		$0.63
Grade C	42%		$0.59
Grade D	38%		$0.57

Frequently Asked Questions

What surfaces is this PU foam sealant compatible with?

This sealant bonds effectively to PVC, masonry, brick, glass, steel, aluminum, and wood. It is not recommended for PE (polyethylene) or Teflon.

What package sizes are currently available?

We provide three standard sizes to meet different project requirements: 900ml, 500ml, and 300ml.

What is the difference between Grade A+, B, C, and D?

The grades are defined by the concentration of main active materials: A+ (86%), B (66%), C (42%), and D (38%). Higher grades offer enhanced bonding power and durability.

How quickly does the sealant cure?

It features ultra-fast surface drying. The total curing time depends on environmental moisture, but it is designed for rapid processing in most conditions.

Can I use this sealant in high-temperature or humid areas?

Yes, the formula is specifically optimized to maintain strong adhesion and stability even in challenging humid or high-temperature environments.

What are the benefits of front-end foam filling technology?

This technology ensures a smoother application, reduces air bubbles within the foam, and provides a more consistent, professional-grade bond compared to standard application methods.