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L-seals offer a cost effective alternative to T-seals for static or reciprocating dynamic applications where high gland fill may be a concern with T-seals. L-seals can be designed to retro fit into existing O-ring grooves (both piston and rod orientations) or optimized for specific application requirements.

Similarly to T-seals, L-seals comprise of an elastomer L-shaped cross section using a single backup ring made from an engineering grade plastic, often PTFE or PEEK.

The use of the backup ring allows the L-seal to be used in high pressure applications whilst still maintaining high sealing efficiency at low pressures. The design of the L-seal uses the system pressure to actively energize the backup ring, ensuring efficient extrusion resistance in single direction pressure applications in static and dynamic conditions.

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