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 back-up gland widths. The ESE provides superior performance in tandem seal applications. Its unidirectional, “self-venting” design is complemented with a high modulus back-up 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 back-up ring. In order 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 back-up ring to provide additional stability in the gland and help prevent any possibility of extrusion.

Features & Benefits

• Specialized, unidirectional, “self-venting” design
• Resilient Avalon jacket coupled with a durable elastomeric energizer plus anti-extrusion back-up ring for enhanced performance over a wide temperature range
• Installable into most existing AS4716 configurations for ease of maintenance