ASI Acetoxy Silicone Guide: Reliable Sealing for Industrial and Specialized Applications
ASI Acetoxy Silicone Guide: Reliable Sealing for Industrial and Specialized Applications
Choosing the right silicone sealant is not simply about creating a watertight barrier. Different applications require different levels of adhesion, flexibility, temperature resistance, durability and material compatibility.
ASI's Acetoxy Silicone range is designed for applications where a moisture-cure silicone is needed to create a durable, flexible seal or bond. The category includes general-purpose and high-performance RTV silicone solutions as well as specialized products such as aquarium sealants. Among the products offered at Factoval are ASI 502 100% RTV Silicone and ASI 509 Aquarium Sealant.
What Are ASI Acetoxy Silicones?
ASI Acetoxy Silicones are one-component, moisture-cure silicone products that cure at room temperature to form flexible silicone rubber.
The acetoxy curing technology makes these products suitable for a wide range of sealing and bonding applications. Depending on the formulation, they can provide resistance to weathering, moisture, temperature changes, mold and mildew while maintaining flexibility after curing.
ASI's acetoxy range includes products developed for both general sealing applications and more specialized requirements. The products in this category should therefore be selected according to the materials, environment and specific purpose of the application.
ASI 502 — 100% RTV Silicone
ASI 502 100% RTV Silicone is the main general-purpose product in the Factoval selection from this category.
It is a one-component, moisture-cure acetoxy silicone that cures into a durable rubber. ASI describes it as resistant to degradation, weathering, extreme temperatures, mold and mildew. It can be used for sealing, bonding and waterproofing in industrial, automotive, construction and other applications.
ASI 502 can be applied to vertical and overhead joints without sagging and is designed to adhere to many common building materials. It is also solvent-free and provides a flexible seal that is designed not to shrink or crack under normal service conditions.
The Factoval selection includes several ASI 502 formats:
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ASI 502 100% RTV — Clear 10.2 oz
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ASI 502 100% RTV — Clear 2.8 oz
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ASI 502 100% RTV — White 2.8 oz
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ASI 502 100% RTV — Black 2.8 oz
These products belong to the same ASI 502 family, with the differences primarily being package size and color. ASI lists clear, white and black among its standard 2.8 oz packaging options, while 10.2 oz cartridges are available in a wider range of colors.
This makes ASI 502 suitable for customers who need the same general silicone technology in a package size and color appropriate for their particular project.
ASI 509 Aquarium Sealant
ASI 509 Aquarium Sealant is a more specialized acetoxy silicone designed specifically for aquarium and aquatic applications.
Unlike a general-purpose RTV silicone, ASI 509 is formulated for aquarium manufacturing and repair and is described by ASI as safe for aquatic life. It can be used in both freshwater and saltwater aquariums to create a durable, waterproof seal.
The product provides strong adhesion to glass and is designed to maintain excellent clarity. Its thick, non-slump consistency also allows it to be applied to vertical and overhead surfaces without sagging. ASI lists applications including aquarium and terrarium manufacturing and repair, glass viewing panels, and sealing or bonding aquarium filters.
At Factoval, ASI 509 is available in:
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ASI 509 Aquarium — Clear
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ASI 509 Aquarium — Black
The two versions are primarily different in color, allowing the sealant to be selected according to the appearance and requirements of the application.
Where Are ASI Acetoxy Silicones Used?
The applications within this category vary depending on the specific product.
ASI 502 can be used for general sealing, bonding and waterproofing applications where a durable 100% RTV silicone is appropriate. Its applications extend across industrial, automotive and construction environments, as well as other maintenance and assembly work.
ASI 509, on the other hand, is specifically oriented toward aquarium and terrarium applications, glass panels, filters and other areas where an aquarium-safe waterproof seal is required.
This distinction is important because choosing a silicone based only on its general appearance or consistency may not be enough. The intended application, substrate and operating environment should always be considered.
Why Use ASI Acetoxy Silicones?
ASI's Acetoxy Silicone category provides solutions for both general-purpose sealing and specialized waterproofing applications.
ASI 502 offers a versatile 100% RTV silicone for sealing, bonding and waterproofing, while ASI 509 provides a specialized option for aquarium and aquatic applications. Both are one-component RTV silicones, but their formulations and intended uses are different.
The appropriate product should always be selected according to the materials being joined or sealed, the environmental conditions and the requirements of the application. Following the manufacturer's application and curing recommendations is also important for achieving the intended performance.
At Factoval, we offer selected ASI Acetoxy Silicone products, including ASI 502 100% RTV Silicone and ASI 509 Aquarium Sealant, in different sizes and colors for a range of professional sealing, bonding and waterproofing applications.
For more practical information about ASI products, silicone sealants and application-specific solutions, stay tuned to the Factoval blog.