SE plummer block housings are made of an improved grade of grey cast iron compared to SNL housings.
Paint, corrosion protection
SE plummer block housings are painted black (RAL 9005) using a water based alkyd/acryl paint. The paint protects the housing in accordance with ISO 12944-2:1998, corrosivity category C3 (i.e. exterior atmospheres with a moderate level of pollution; coastal areas with low salinity; interior atmospheres with high humidity and some air pollution). It is not affected by most lubricating or engine oils, cutting fluids or alkalescent washing chemicals. Housings can be repainted with most water or solvent based 1- or 2-component paints.
Unpainted surfaces are protected by a solventless rust inhibitor.