- Type E Insulation Kits, this is the type that gasket has its outside diameter as equal to that of flange outside diameter and precision cut bolt holes.  This design helps easy alignment of the gasket during installation.  Type “E” gaskets are available in Neoprene faced reinforced phenolic material as standard, other materials are also available upon request.
 - This Type E Insulation Kits is used on full face and raised face flanges.