Neuman and Esser Eng. India Pvt. Ltd. Offer Piston Rod Packing with Seal Pressure Differences. Neuman and Esser Eng. India Pvt. Ltd. Supplies Compressors as well as Grinding and Classifying Systems. The Piston Rod Packing with Seal Pressure Differences should be in a position to reliably seal pressure differences of several hundred bars. Packings are available as lubricated or dry-running type. The Piston Rod Packing with Seal Pressure Differences is available in cooled and uncooled versions of the packings and they can have seal gas or purge gas connections.