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Henkel Loctite IS 90C Acrylic Sealant Clear 4 gal Pail - 209549

$470.73
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SKU: 209549
California prop 65
Description

Description

The Henkel LOCTITE IS-90C Acrylic Sealant Clear – 4 Gallon Pail is a one-component, low-viscosity, heat-cured acrylic resin engineered to seal porosity in castings, weldments, and powder-metal parts. Its advanced formulation penetrates deeply into micro-porous structures and cures into a permanent, transparent thermoset polymer—creating durable, leak-proof parts without affecting dimensional accuracy.

Designed for reliability in manufacturing environments, this sealant is ideal for industries that demand precision and performance, such as automotive, aerospace, and heavy equipment production. The LOCTITE IS-90C offers fast, clean processing with its water-washable formula and delivers consistent results in both low- and medium-volume operations.


Key Features

• One-Component System: Ready to use; no mixing or catalysts required.

• Low Viscosity: Deeply penetrates pores and voids for complete sealing.

• Heat-Cure Technology: Forms a tough, thermoset polymer with superior adhesion.

• Water-Washable: Cleans easily before curing for simplified workflow.

• Chemical & Temperature Resistant: Withstands oils, coolants, fuels, and thermal cycling.

• Transparent Finish: Allows easy visual inspection of sealed surfaces.

• Military Specification Compliant: Meets MIL-I-17563C Class 1 requirements.

• High Yield & Low Waste: Minimizes rework and scrap, improving process efficiency.


Applications

• Metal Casting Porosity Sealing: For aluminum, zinc, magnesium, and ferrous castings.

• Powder Metal Components: Prevents gas and fluid leaks while maintaining part strength.

• Weldments & Assemblies: Seals fine weld porosity to improve part integrity.

• Automotive & Aerospace Manufacturing: Ideal for engine blocks, transmission housings, and fluid-handling components.

• Hydraulic & Pneumatic Parts: Enhances durability and prevents pressure loss.

• Industrial Maintenance & Repair: Reliable for rework and restoration of porous parts.


Benefits

• Permanent Sealing Performance: Creates a long-lasting barrier against pressure and fluids.

• Simplified Processing: Easy water cleanup before curing and single-step application.

• Operational Cost Savings: Reduces waste, rework, and downtime.

• Improved Part Reliability: Ensures structural integrity and leak-free performance.

• Safe & Efficient Handling: Low VOC, solvent-free formulation minimizes workplace hazards.

• Transparent Finish: Maintains aesthetic and dimensional precision after cure.


Product Specs

Typical Use Used for impregnation of porous materials in a variety of industries
Chemical Composition Acrylic
Color Clear
Components 1 part
Cure System Heat
Cure Time 4 to 10 min @ 90 °C
Flash Point >93 °C
Hardness 76 D
Specific Gravity 1.0 @ 25 °C
Viscosity 5 to 20

Categories

• LOCTITE Industrial Sealants

• Porosity Sealing Solutions

• Acrylic Resin Systems

• Automotive & Aerospace Manufacturing

• Henkel Performance Chemicals

Reviews

FAQs

What is LOCTITE IS-90C Acrylic Sealant used for?

This one-component, heat-cured acrylic resin seals porosity in castings, weldments, and powder-metal parts. It penetrates deeply into micro-porous surfaces, curing into a transparent thermoset polymer that provides long-lasting, leak-free sealing for applications in automotive, aerospace, and industrial manufacturing.

How does the curing process work?

LOCTITE IS-90C cures through heat, typically at 90 °C for 4–10 minutes. During curing, the resin polymerizes into a solid thermoset material that fills internal voids and permanently seals pores without altering the part’s dimensions or mechanical properties.

Why choose this over traditional sealants?

Unlike multi-component systems, LOCTITE IS-90C is ready to use with no mixing required. Its low-viscosity, water-washable formulation provides deep penetration and easy cleanup before curing. It’s MIL-I-17563C Class 1 compliant, ensuring consistent, high-quality sealing performance in mission-critical applications.

Is LOCTITE IS-90C water-washable?

Yes. The resin can be easily cleaned with water before curing, eliminating the need for harsh solvents. This simplifies workflow, reduces waste, and improves operator safety in manufacturing environments.

What materials can it be used on?

The sealant is compatible with aluminum, magnesium, zinc, and ferrous castings, as well as powder-metal and welded components. It effectively seals internal porosity, preventing fluid and gas leaks in parts subjected to pressure, vibration, or heat.