Raven 503 is an aromatic-based “bio-based” spray polyurethane that is formulated for protection of Expanded Polystyrene Foam (i.e. EPS Foam). Raven 503 displays very fast front-end cure speeds to help prevent outgassing.

In addition, Raven 503 offers a three hour overcoat window for touch up if needed. The chemical resistance to most oilfield chemicals is excellent (check chemical resistance chart for specifics).

Raven 503 offers one to two second gel time and is tack-free in two seconds and is 55-60 Shore D Hardness. Raven 503 can be applied in temperatures ranging from 0°F to 200°F. It can also be applied in > 90% relative humidity conditions with minimal to no bubbling.