ESE Seal

Generally used as a primary rod seal in dynamic tandem systems, Greene Tweed’s new ESE design is available for use in either one or two backup gland widths. The ESE provides superior performance in tandem seal applications. Its unidirectional, “self-venting” design is complemented with a high modulus backup ring that is installable into “closed-groove” configurations for most sizes (unlike that of many standard, metal-spring-energized [MSE®] types). Along with the “self-venting” capability, the ESE design offers low operating friction along a wide operational temperature range. The seal assembly itself consists of an extremely durable, PTFE jacket with an elastomeric energizer and high modulus backup ring.

To help optimize seal life, Greene Tweed recommends the use of our high-performance Avalon® PTFE materials. The combination of a thermoplastic Avalon® jacket with one of our specially formulated, elastomeric o-ring energizers delivers enhanced performance over a wide temperature range. Generally this range extends from -65°F to 450°F (-54°C to 232°C), depending on materials selected. Greene Tweed’s ESE also features a high-strength backup ring to provide additional stability in the gland and help prevent any possibility of extrusion.