500-222 Tough Optically Clear Conformal Coating and Encapsulant

500-222 Tough Optically Clear Conformal Coating and Encapsulant

500-222 is a tough, optically clear conformal coating and encapsulant that remains flexible and non-brittle. Ideal for LED and other lighting applications, this non-hazardous elastomeric enhances reliability through vibration damping and stress relief. As one of our 500 Series Electronics-grade silicones, 500-222 is a neutral cure (alkoxy) sealant suitable for spraying coating, needle dispensing, dip coating, or flow coating. It’s a ready-to-use, room temperature moisture cured silicone that cures to a resilient rubber that is tough enough and strong enough to resist abrasion, yet remains compliant enough to reduce strain on electronics components. When a non-corrosive product is required, this is an alternate unprimed adhesive solution that:

  • Delivers a more uniform bond
  • Provides a tough barrier coating to protect against moisture, dust, and environmental conditions
  • Helps dampen vibrations

A translucent liquid, 500-222 has a viscosity of ~ 2,500 cPs and begins to gel in fewer than 25 minutes.

    Product information:

    Novagard’s 500 series moisture-cure conformal coatings and sealants achieve primer-less adhesion to electronics substrates such as FR4, plastic, copper, and other metals. The inside-out cure provides longer working times and low odor, and are free of solvents with no isocyanates.

    Certain materials, chemicals, curing agents, and plasticizers may inhibit the cure. The most notable are organotin catalysts, amino compounds, polysulfide, and other sulfur-containing materials. Do not use in or around highly oxidative chemicals such as liquid oxygen, chlorine, or peroxides. Not recommended for surfaces that are to be painted.


    • Coating of LED lighting assemblies
    • Frame and junction box sealant in photovoltaic modules
    • Sensitive electronic components and circuit boards
    • Thin-section encapsulation
    • General electronics/industrial coating applications requiring a non-corrosive product

    Product documents: