Sika Flex Polyurethane Sealant

Whatsapp Order

Sika Flex Polyurethane Sealant is a high-performance, elastic, one-component polyurethane-based sealant designed for sealing and bonding applications in construction, automotive, and industrial sectors. It offers excellent adhesion to a wide range of substrates including concrete, metal, wood, and plastics without the need for primers. The sealant provides durable, weather-resistant, and flexible joints, capable of absorbing movement and vibrations, making it ideal for expansion joints, facade sealing, and structural glazing.

Add to compare

Add to wishlist

Category: Sealants and Adhesives Tags: Construction Industry, Elastic Sealant, Polyurethane Sealant, PU Sealant, Sika Flex

Description

Table of Contents

Sika Flex Polyurethane Sealant

Primary Uses

Construction Industry

Sealing expansion and construction joints in buildings, bridges, and infrastructure.
Bonding and sealing facade elements such as panels, windows, and curtain walls.
Weatherproofing and waterproofing joints exposed to UV radiation and harsh environmental conditions.
Floor joint sealing to accommodate thermal and mechanical movements.

Automotive Industry

Sealing and bonding automotive components such as windshields, body panels, and trim.
Vibration dampening and noise reduction in vehicle assemblies.

Industrial Applications

Sealing joints in machinery and equipment subject to dynamic stress and movement.
Used in prefabricated elements bonding and sealing.

Secondary Uses

Marine and Transportation

Sealing of joints in ships, railcars, and other transport vehicles exposed to water and weather.

DIY and Home Repair

General purpose sealing and bonding in residential repairs and renovations.

Restoration Projects

Suitable for restoration and conservation where flexible, durable sealing is required.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Polyurethane prepolymer with additives
Common/Trade Name: Sika Flex Polyurethane Sealant
CAS Number: Mixture (varies by formulation)
HS Code: 3910.00 (Silicone and polyurethane sealants)
Synonyms: PU sealant, elastic polyurethane sealant

2. Physical & Chemical Properties

Physical State: Paste
Color & Odor: Available in multiple colors; mild characteristic odor
Density: Approx. 1.3 – 1.5 g/cm³
Solubility: Insoluble in water; cures by moisture reaction

3. Safety & Hazard Attributes

GHS Classification: May cause skin and eye irritation; respiratory sensitizer in some formulations
Toxicity: Low when cured; avoid inhalation and skin contact during application
Exposure Limits: Follow occupational safety guidelines for isocyanates and solvents

4. Storage & Handling Attributes

Storage Conditions: Store in tightly sealed cartridges or pails in a cool, dry place away from direct sunlight and heat sources
Container Type: Cartridges, sausages, or pails (varied sizes)
Shelf Life: 12 months from manufacture if unopened and properly stored
Handling Precautions: Use gloves, goggles, and ensure adequate ventilation during application

5. Regulatory & Compliance Attributes

Complies with ASTM C920, ISO 11600 standards for sealants and joint fillers
Meets VOC regulations for construction sealants in the US EPA and EU directives
Manufactured in compliance with REACH and OSHA standards for worker safety and environmental protection
Supports LEED certification with low-emission formulation
Conforms to local building codes and fire safety regulations

6. Environmental & Health Impact

Biodegradability: Not biodegradable due to polymer nature
Ecotoxicity: Low; avoid environmental release of uncured product
Bioaccumulation: Not significant

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves, safety goggles, protective clothing recommended
Handling Guidelines: Use in well-ventilated areas; avoid inhalation of vapors and skin contact
Storage Measures: Keep containers tightly closed; store away from ignition sources and incompatible materials

First Aid Measures

Inhalation: Move to fresh air immediately; seek medical attention if respiratory symptoms develop
Skin Contact: Wash thoroughly with soap and water; seek medical advice if irritation persists
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes; seek urgent medical care
Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical attention

Firefighting Measures

Fire Hazards: Combustible when uncured; emits toxic fumes when burning
Extinguishing Media: Foam, dry chemical, CO₂, water spray
Special Precautions: Use self-contained breathing apparatus and protective gear
Hazardous Combustion Products: Carbon oxides, nitrogen oxides, isocyanate fragments