... storage stabilit M28# Polyester Resin for Body Filler, Car putty (paste)DESCRIPTION: M28# is an unsaturated polyester resin containing no wax ... -66Gel time,* (30),minutes 5-8 *5.0% MEKPO (50% paste) and 2.0% Cobalt2 (10%)Recommended Storage: The resin should ... used by trained professionals. Resin for body filler, car putty (paste), poly putty