Polygel Technologies [I] Pvt. Ltd. Manufactures Gasket Sealant Shellac. Polygel Technologies [I] Pvt. Ltd., an ISO 9001-2000 awarded company manufactures Specialty Chemicals, Telecom Cable gels, Adhesives and Sealants, Organic Titanate for Wire Enamels, Paints, Printing Inks and Coatings etc. The Gasket Sealant Shellac is a general purpose gasket dressing used to hold pre-cut gaskets in place during assembly. The Gasket Sealant Shellac seals most common automotive fluids such as water, oil, gasoline, diesel fuels, grease and antifreeze. The parts should be clean and free from oil and grease, or other contaminants.