Type AK piston seal is a single-piece, ready-to-install piston ring assembly designed for pneumatic cylinders, offering reliable double-acting sealing performance. By offering a compact, all-in-one seal that requires no assembly of separate O‑Rings or backup seals, the Type AK simplifies installation, reduces part counts, and enhances reliability, making it a smart choice for efficient pneumatic system design. This is a Custom Article Number with a Customer Specific Design.