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Energized U-cup rod seals

Energized U-cup rod seals incorporate a nitrile rubber (NBR) X-ring in their thermoplastic polyurethane (TPU) U-cup. The X-ring serves as energizer, provides additional sealing force and improves the long-term resilience of the sealing lips. This can be beneficial in applications with low operating pressure or low temperatures.

PTB profiles

PTB profiles (fig. 1) are made of LUBRITHANE (TPU). They are suitable for pressures up to 400 bar (5 800 psi) in medium duty applications and are available in metric (→ Size list [pdf]) and inch sizes (→ Size list [pdf]). Some metric sizes fit seal housings in accordance with ISO 5597:2010. For additional information, refer to PTB profile data.

STD profiles

STD profiles (fig. 2) are made of LUBRITHANE (TPU). They are suitable for pressures up to 400 bar (5 800 psi) in medium duty applications and can also be used as a heavy duty static seal or a snap-in wiper seal. These profiles are available in inch sizes (→ Size list [pdf]) where narrower seal housings are used. Metric sizes are available on request. For additional information, refer to STD profile data.
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