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.
