Outer diameter seal type
Outer diameter static seals are the primary boundary between the cylinder barrel and its end caps (head or bottom). These radial seals must maintain a perfect, leak-free interface under sustained high pressure and potential mechanical vibrations. At Carlock Sealing, we engineer these profiles to ensure maximum radial interference, preventing fluid bypass at the barrel's extremities and ensuring the structural integrity of the entire hydraulic assembly.
Q: Why use a machined static ring instead of an O-ring for the cylinder head?
A: Standard O-rings can twist during the assembly of heavy end caps or extrude into large clearance gaps under pressure. Carlock Sealing's machined static seals feature optimized cross-sections that provide a larger sealing footprint and can be integrated with back-up rings to handle extreme pressure with zero extrusion.
Q: Can these seals handle thermal expansion of the cylinder barrel?
A: Yes. By precisely calibrating the radial interference (squeeze), Carlock Sealing ensures that the seal remains active even as the metal components expand or contract due to temperature fluctuations, maintaining a constant seal throughout the thermal cycle.
Technical Disclaimer: Outer diameter static seals require precise alignment between the barrel and end cap during assembly. Burrs or sharp edges at the barrel entrance can damage the seal. Carlock Sealing provides material certificates (TÜV/SGS) and assembly guidelines to ensure optimal performance in your specific high-pressure hydraulic environment.
