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PU SEALANT

High-Performance Joint Sealing Solution for Construction, Infrastructure & Industrial Engineering
PU Sealant is a polyurethane-based elastomeric joint sealing material designed for long-term movement accommodation, waterproofing, and bonding performance in demanding structural and industrial environments.
It cures through moisture reaction to form a durable, flexible rubber-like seal capable of maintaining performance under thermal expansion, vibration, and structural movement.
It is widely used in building façades, infrastructure joints, transportation systems, and industrial assembly applications.

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Trusted by Infrastructure & Industrial Projects

Our PU Sealant is applied in a range of engineering environments including:
Railway station façade and expansion joint systems
Commercial complex building envelope sealing
Residential high-rise waterproofing systems
Transportation equipment assembly and vibration sealing

Technical Performance Overview

Designed for stable long-term performance under dynamic stress conditions.

Property	Value	Standard
Appearance	Smooth, homogeneous paste	Visual
Density	1.35 ± 0.05 g/cm³	ISO 1183
Skin Time	40–60 min (23°C, 50% RH)	ASTM C679
Cure Speed	≥ 3 mm / 24h	Internal test
Shore A	25–45 (adjustable)	ASTM D2240
Tensile Strength	≥ 1.5 MPa	ASTM D412
Elongation	≥ 500%	ASTM D412
Movement Capability	±25% to ±50%	ASTM C719
Service Temp	-40°C to +90°C	Standard

Key Engineering Advantages

Structural Movement Accommodation

Maintains elasticity under thermal expansion, vibration, and long-term structural movement without cracking or loss of adhesion.

Multi-Substrate Adhesion Performance

Suitable for:
●Concrete & precast panels
●Aluminum & metal systems
●Brick, masonry, and composite substrates

Weather & UV Resistance System

Formulated with UV stabilizers and anti-aging additives to improve long-term outdoor durability in façade applications.

Paint Compatibility

Cured sealant can generally be over-coated with acrylic or water-based coating systems used in architectural finishing.

Vibration & Acoustic Damping

Reduces vibration transmission in transportation, machinery, and industrial environments.

Product Range

Construction PU Sealant

Industrial PU Sealant

Automotive PU Sealant

Structural Grade PU Sealant

Fast-Curing PU Sealant

Weather-Resistant PU Sealant

Manufacturing Capability & Reliability

To support global industrial supply chains, we operate a controlled production system with:
●Continuous bulk production lines
●OEM / private label manufacturing capability
●Batch traceability with retained samples
●QC testing for every production batch
Quality Systems
●ISO 9001 quality management system (factory level implementation)
●ASTM / ISO / EN aligned testing procedures
●Internal COA (Certificate of Analysis) issued per batch
●Optional third-party testing (SGS / Intertek upon request)

OEM / Private Label Capability

We support global distributors, importers, and construction material brands with:

01/

Brand Customization
Logo printing on cartridges, sausages, and drums.

02/

Packaging Engineering
Export-grade packaging designed for sea freight and long-distance logistics stability.

03/

Color & Formula Customization
●Black / white / grey / transparent
●RAL-based architectural color matching
●Adjusted curing speed & hardness for regional climate conditions

04/

Engineered adjustments for
●High humidity regions
●Desert climates
●Cold-temperature construction zones

Packaging Options

●300ml / 310ml cartridges
●400ml / 600ml sausage packs
●200L industrial drums
Shelf life: 12 months under recommended storage conditions (<25°C, dry environment).

Supply Capability & Commercial Terms

To support international procurement decisions:
●MOQ: Flexible (trial order available for distributors)
●Lead time: 7–15 working days (standard orders)
●Production capacity: Large-scale continuous output for export supply
●Incoterms: FOB / CIF / EXW available
●Payment terms: T/T, LC acceptable for qualified buyers

Compliance & Certifications

Our products are manufactured in alignment with global standards:
●ASTM C920 (USA sealant performance standard)
●ISO 11600 (European classification system)
●EN 15651 (CE framework reference standard)
●REACH / RoHS compliant low-VOC formulation

Quality Assurance System

Each batch undergoes:

Rheology and viscosity testing

Tensile & elongation testing

Shore hardness validation

Adhesion performance sampling

Retained sample storage (traceable for defined period)

Why Global Buyers Work With Us

Our customers choose us for:
●Stable industrial-scale supply
●Consistent batch-to-batch performance
●Flexible OEM/private label support
●Engineering-level technical support
●Export-ready packaging & logistics reliability

FAQ

Q: What is PU Sealant used for?

A: Used for sealing and bonding joints in construction, transportation, and industrial applications requiring flexibility and durability.

Q: What is the service life?

A: Typically 10–15 years depending on application design and environment.

Q: Can it be used outdoors?

A: Yes. Weather-resistant formulations are designed for exterior exposure.

Q: What is the difference between PU and silicone?

A: PU offers stronger adhesion and mechanical strength; silicone offers superior UV resistance in non-structural applications.

Q: Do you support OEM?

A: Yes. Full OEM and private label services are available.

Request Technical Data / Pricing

We support:

Global distributors
Construction material importers
EPC contractors
Industrial OEM manufacturers

Available upon request:

Technical Data Sheet (TDS)
Safety Data Sheet (MSDS)
COA samples
Project reference dossier

As one of the most professional pu sealant manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy bulk cheap pu sealant from our factory. Contact us for more details.

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