Cleanroom Installation Accessories

Neutral Silicone Sealant

A non-corrosive neutral-cure silicone for elastic sealing around cleanroom glazing, coated-metal frames and non-porous perimeter joints.

Neutral Non-Corrosive Cure
Glazing-Compatible Adhesion
UV and Ozone Resistance
Flexible Temperature Service

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Product Introduction

Neutral silicone sealant cures through atmospheric moisture without releasing the acidic by-products associated with acetoxy silicone. The formulation is suited to glass, anodized aluminum, coated steel and many common frame materials used around cleanroom windows and doors. After cure, the silicone rubber retains flexibility across temperature cycling and resists UV and ozone exposure at perimeter interfaces.

Key Features

Neutral curing reduces corrosion risk on compatible metals and avoids the sharp odor of acetoxy systems.

Low-modulus silicone movement accommodates glazing and frame perimeter expansion.

Cured silicone maintains flexibility through wide routine temperature variation.

Resistance to ultraviolet light, ozone and moisture supports exposed perimeter joints.

Customer Product Concerns

Sensitive frame and glazing assemblies need an elastic seal that cures without attacking adjacent metals or coatings.

Acidic cure by-products can discolor or corrode susceptible metal interfaces.Neutral moisture curing avoids acetic-acid release and is selected for compatible glazing and frame substrates.

Glass and aluminum expand at different rates and tear rigid perimeter fillers.Low-modulus silicone sustains repeated movement while maintaining a continuous seal.

Sunlight and ozone embrittle unsuitable organic sealants at exterior frames.The silicone network provides durable resistance to UV radiation, ozone and weather exposure.

Contaminated joint flanks cause localized adhesion loss.Defined cleaning, masking and primer selection produce consistent two-sided adhesion.

Typical Applications

Cleanroom observation-window perimetersAluminum door-frame jointsGlass-to-metal glazing sealsCoated-panel perimeter jointsInterior and exterior frame weather seals

Technical Parameters

Typical construction and application ranges for a one-part neutral-cure silicone glazing sealant are shown below.

Core Material	One-component alkoxy neutral-cure silicone elastomer
Panel Thickness	3-15 mm recommended cured seal depth
Effective Width	6-25 mm typical glazing or perimeter joint width
Maximum Length	Up to 10000 mm continuous prepared perimeter section
Steel Facing Thickness	0.50-1.50 mm compatible coated-steel frame or panel facing
Core Density	Approximately 1300-1550 kg/m³ uncured sealant density
Thermal Conductivity	Approximately 0.20-0.30 W/(m·K) for cured silicone rubber
Surface Finish	Smooth tooled silicone surface in translucent, white, gray or black
Joint Type	Two-sided glazing, butt or perimeter joint over non-adhering backing material
Customization	Available based on the intended application and operating environment.

Available Options

Translucent, white, gray or blackLow-modulus weatherseal gradeCompatible glazing primer300 mL cartridge or 600 mL foil pack

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