L-Cap Seal

Aerospace, Defense, Energy, Industrial Operations, Life Sciences, Semiconductor

The L-Cap® provides superior performance in either single or tandem rod seal applications. Its unidirectional, “pressure relief” design makes it easily installable into “closed-groove” configurations for most sizes while offering low operating friction and superior leakage control along a wide operational temperature range.

Features & Benefits

Specialized, unidirectional, “pressure relief” design
Low operating friction and superior leakage control
Resilient Avalon® PTFE jacket coupled with a durable elastomeric energizer
Wide temperature range
Available anti-extrusion Avalon® PTFE or Arlon® PEEK backup ring for enhanced performance – Installable into most existing AS4716 closed groove configurations for ease of maintenance

Temperature Range

–62°C to 232°C (–80°F to 450°F)

For applications facing extreme temperatures, high pressures, or uniquely challenging operating conditions, our global engineering team delivers fully custom‑engineered solutions. Because every critical environment is different, these designs are developed in close collaboration with you—let’s discuss your requirements to build the right solution.

Maximum Pressure

0 – 5000 PSI

Need something more custom?
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