English Translation of Title:
Pneumatic Actuator Assembly – Normally Closed O‑Ring, 263 x 275 x 0.6, for Water Jet Cutting Machine Parts, Model No. 10177806-Pneumatic-Actuator-Assembly-Normally-Closed-O-Ring-263-x-275-x-06.984.3-1

Introduction, Application, Features, and Maintenance:

This component is a pneumatic actuator assembly that incorporates a normally closed O‑ring seal with dimensions 263 mm inner diameter, 275 mm outer diameter, and 0.6 mm cross‑section. It is designed for water jet cutting systems to provide fail‑safe sealing in pneumatic circuits, ensuring the actuator returns to a sealed, closed position when air pressure is removed.

Application:
Used in pneumatic actuation systems within water jet cutting machines to provide linear motion while maintaining a robust seal against high‑pressure water, abrasive slurry, or air. Typical installations include valve actuators, cylinder end caps, manifold seals, and access cover seals where a large‑diameter, fail‑safe sealing solution is required.

Features:

• Normally closed design ensures the O‑ring maintains a seal upon loss of air supply (fail‑safe).

• Large O‑ring (263 x 275 x 0.6 mm) provides sealing over a wide surface area.

• Manufactured from durable, chemically resistant elastomer compatible with water jet media and pneumatic fluids.

• Resistant to extrusion, compression set, and deformation under pressure.

• Integrated assembly simplifies installation and reduces component count.

• Reliable sealing performance under repeated cycling and harsh operating conditions.

Maintenance:

• Regularly inspect the O‑ring for signs of wear, hardening, cracking, nicks, or extrusion.

• Check for air or fluid leakage around the sealed area during machine operation.

• Replace the O‑ring immediately if any damage, deformation, or leakage is observed.

• Always use a new O‑ring when reassembling components after disassembly.

• Clean the gland and sealing surfaces thoroughly before installation.

• Lubricate the O‑ring lightly with compatible lubricant during installation to prevent damage.

• Store spare O‑rings in a cool, dark place away from ozone and direct sunlight.