Sriniwas Synthetic Packers P. Ltd. Offers MOPP Insulating Compound. Sriniwas Synthetic Packers P. Ltd. Offers multi-product plastic processing facility used in manufacture of Polyethylene Insulated Jelly Filled Communication Cables [PIJF] and Optical fibre cables. The MOPP Insulating Compound is a medium density Polyethylene compound that is used in JFTC Telephone cables as dielectric; it is supplied in granules form and is suitable for processing on high speed tandem lines.