Description

White Sealant CAS NO 91450-39-4 is a high-performance, moisture-curing polymer sealant designed for durable, flexible, and weather-resistant bonding and sealing applications. Its formulation provides excellent adhesion to a wide range of substrates, including glass, metals, ceramics, and many plastics, ensuring long-term reliability in demanding environments. This product is essential for manufacturers and contractors in the construction, automotive assembly, marine, and industrial maintenance sectors seeking a robust sealing solution.

Application

• Construction & Architectural Glazing: Sealing and bonding glass panels, curtain walls, skylights, and perimeter joints in buildings.
• Automotive & Transportation: Assembly sealing for windows, windshields, body panels, and compartments in vehicles, buses, and railcars.
• Marine & Shipbuilding: Waterproof sealing for hulls, decks, windows, and other critical joints exposed to harsh marine conditions.
• Industrial Fabrication & Maintenance: Sealing seams in metal roofing, siding, ductwork, and industrial containers.
• HVAC & Plumbing Systems: Sealing joints and connections in air handling units, ducting, and piping installations.
• Electronic Enclosure Sealing: Providing environmental protection (dust, moisture) for electrical boxes, control panels, and outdoor lighting fixtures.

Basic Information

Product Name	White Sealant
CAS No.	91450-39-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	MS Polymer Sealant; Silyl-Terminated Polyether (STPE); Hybrid Polymer Sealant; Modified Silane Sealant; MS Polymer Adhesive; Elastic Adhesive Sealant; One-Component Sealant; Neutral Curing Sealant
EINECS	Contact for details

Quality Control

Our White Sealant is manufactured under a strict quality management system. Every batch undergoes comprehensive testing for key performance parameters including viscosity, cure rate, tensile strength, elongation, and adhesion to standard substrates. Certificates of Analysis (COA) documenting these results are available upon request to ensure compliance with your project specifications and quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent premature curing. Keep away from direct heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White, paste-like consistency
Density (g/cm³)	1.05 - 1.25
Viscosity (mPa·s)	Contact for details
Skin-Over Time (min)	10 - 30
Tack-Free Time (hours)	1 - 3
Shore A Hardness	20 - 40
Tensile Strength (MPa)	≥ 1.5
Elongation at Break (%)	≥ 400
Service Temperature Range	-40°C to 90°C (-40°F to 194°F)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.