1. GENERAL DESCRIPTION

Clear or red one-component urethane type conformal coatings.
CRC Urethane Coats provides an air curing conformal urethane type coating that insulates
electrical/electronic equipment, seals out water and moisture and acts as a barrier for
contaminants. CRC Urethane Coats dry fast and adhere well. After curing they form a highly
flexible film which is durable and resistant to abrasion and contaminants.

2. FEATURES

• Available in clear or red formulations:
– Clear: contains U.V.- fluorescent dye for easier quality control
– Red: provides additional corrosion resistance
• Dries quickly to a durable, flexible and non- conductive film.
• Excellent electrical characteristics:
– High dielectric strength
– High surface and volume resistivity
• Effective temperature range of – 40°C to + 120°C.
• Abrasion-resistant insulator for electrical/electronic equipment and components.
• Specifications : * NSN 5970-01-017-5738.



Description

1. DIRECTIONS

• Clean and degrease surface thoroughly before application (use one of the CRC precision
cleaners or Lectra Clean as appropriate).
• Shake aerosol can well; red formulation contains an agitator ball for pigment dispersion.
Stir or mix bulk product to homogenize. Repeat while using. Petroleum solvents (white
spirit) may be used to dilute the bulk product to the required viscosity and film thickness.
• Apply in light, even coats. Best results are obtained with 2 (or even more) lighter rather
than 1 heavy coat. Additional coats can be applied when first coat is solvent dry (approx.
120 min). For maximum adhesion, 2nd coat must be applied within 48 hours.
• Due to slow cross linking reaction, room temperature curing can take several days.
Accelerated curing can be accomplished by baking at 60°C during 24 hours. Under those
conditions cure for handling is reached in 2 to 3 hours.
• For dipping applications it is advised to cover the bath when not in use and to prevent skin
formation by keeping air out (e.g. by nitrogen blanketing). Rags or filters heavily
contaminated with these products should be protected from auto-ignition by soaking with
water or cleaning (e.g. with CRC Lectra Clean).
• When finished spraying, clear valve by turning can upside down and pressing button until
only propellant escapes. If clogging occurs, remove button and clean orifices with fine wire.
• If necessary remove with CRC Lectra Clean (if curing has only started) or CRC Gasket
Remover (for fully cured films).
• Do not use on energized equipment. Use in well ventilated area.
• A safety data sheet (MSDS) according EU directive 93/112 is available for all CRC
products.