Hydraulic rotary joints enable fluid transfer between stationary and rotating parts in marine systems. Marine hydraulics use these joints for steering, propulsion, and other critical functions. They ensure leak-free operation under high pressure and harsh sea conditions.

Size: 1/2" to 2" nominal bore

Grade: ISO 4401, DIN 24340, NFPA T3.5.1 R1

Viscosity: 15 to 320 cSt (ISO VG 15 to VG 320)

Buoyancy: Neutral or positive buoyancy options available

Material: Stainless steel (316L), carbon steel, brass, or aluminum

Pressure Rating: Up to 350 bar (5000 psi)

Temperature Range: -20°C to +120°C (-4°F to +248°F)

Rotation Speed: Up to 500 RPM

Seals: Nitrile, polyurethane, or fluorocarbon (FKM) for corrosion resistance

Connection Types: SAE, BSP, NPT, or metric threaded

Compliance: ABS, DNV, or other marine certifications available

Hydraulic Rotary Joints and Marine Hydraulics may comply with maritime standards such as ISO 4413, ISO 4406, or specific classification society standards like DNV, ABS, or Lloyd's Register, depending on the manufacturer and product specifications. Always verify with the supplier for exact compliance.