The P38 is a double-acting low-friction piston seal solution for compact o-ring grooves, that extends the service range above what an o-ring alone is capable of supporting. The P38 is designed for light-duty applications, is particularly suited for small-diameter installations, and due to its size and design, is easy to install. High-performance materials, like HLX, provide outstanding wear and extrusion-resistance properties as well as large range of temperature and media compatibility.

The P38 is designed to be used in existing dynamic o-ring grooves and does not require any groove modification. A good choice for pneumatic and hydraulic equipment sealing needs, the P38 is proven to extend the service range and seal longevity over stand-alone o-ring installations.

Small‑diameter double‑acting piston sealing (core application): Specially designed for small‑diameter pistons (from 6mm bore), ideal for mini cylinders, small pneumatic cylinders, precision hydraulic/pneumatic components with limited space.

Direct upgrade for standard O‑ring grooves: Fits directly into existing dynamic O‑ring grooves (AS‑568A, MIL‑G‑5514F) without modification; delivers far superior sealing and service life than standalone O‑rings; perfect for quick equipment upgrades.

Light‑duty hydraulic & pneumatic equipment: Designed for light‑duty applications, suitable for both hydraulic and pneumatic systems; widely used in automation, small fixtures, robots, precision instruments, medical devices and small hydraulic manifolds.

Medium‑pressure high‑speed reciprocating mechanisms: Rated up to 350bar with max speed 15m/s; low friction, no stick‑slip; ideal for high‑speed small servo cylinders, high‑speed valves and mini high‑speed cylinders.

Wide‑temperature & multi‑fluid environments: Operates from -45°C to 200°C; Armorlene® (e.g., HLX) compatible with mineral oils, synthetic esters, water‑based fluids; not suitable for phosphate esters; fits cold, hot and multi‑fluid conditions.

Extremely space‑limited installations: Ultra‑compact, easy installation; perfect for miniaturized, integrated hydraulic/pneumatic components like small robots, portable devices, precision instruments and small power units.

Long‑life low‑maintenance equipment: Excellent wear & extrusion resistance; longer life and less maintenance than standard O‑rings; for continuous‑running small automation lines, precision equipment and outdoor small units.