2210 Oil varnished silk Key words: insulation varnish, insulation materials, electrical insulation; 2210 is silk cloth impregnated with oil varnish Class A ( 105 degree) Features and Applications: Excellent softness and electric property.. As liner and coil insulation for motors and electric appliances. Products advantage: Excellent softness; Excellent electric property.; class A( 105 degree) ; Applications: as liner and coil insulation.