Hynautic Marine Steering & Engine Controls
Hynautic is a renowned name in marine hydraulic steering and engine control systems, trusted by boaters for decades. Originally an independent manufacturer, Hynautic was acquired by Teleflex (now part of SeaStar Solutions), ensuring continued innovation and support for its robust product line. Hynautic's systems are known for their reliability, precision, and adaptability, making them a top choice for vessels of all sizes—from recreational boats to commercial fleets.
Hydraulic Steering Systems & Key Components
Hynautic, Teleflex, hydraulic steering, engine controls, marine systems- Hydraulic Steering Systems: Hynautic's core offerings include manual and power-assisted steering systems, engineered for smooth and responsive helm control. These systems use hydraulic fluid, cylinders, and robust fittings to deliver consistent performance in demanding marine environments.
- Tubing & Fittings: Hynautic supplies nylon tubing (5/16" and 3/8") and specialized fittings, critical for both older and newer steering installations.
- Slave Units: Hynautic throttle and transmission slave units provide up to 120 inch-pounds of torque and are equipped with safety features like over-travel bungees and internal pilot check valves for reliability and precise control.
Product Range and Compatibility
Slave cylinders, fitting kits, Teleflex compatibility.- Fitting Kits: Hynautic offers fitting kits such as the STF-10 for seamless integration with ST-04/06 throttle and SS-04 transmission hydraulic slave cylinders, simplifying installation and maintenance (The STF-10 (and STF-12) kits are designated for the throttle slaves (ST-04 / ST-06), while the SSF-04 fitting kit is specifically packaged for the SS-04 transmission shift slave).
- Compatibility: Hynautic systems are suitable for most marine engines and hydraulic transmissions, supporting boats up to 100 feet in length. Teleflex's acquisition ensures ongoing support and availability of compatible components.
- Maintenance: Regular inspection of tubing, fittings, and hydraulic fluid levels is essential for optimal performance and longevity.
- Safety: Some Hynautic components are subject to California Proposition 65 warnings due to materials used in manufacturing.
- Replacement Parts: Many original Hynautic part numbers have been superseded by Teleflex, but Fisheries Supply continues to offer legacy and current stock for ongoing support.
Frequently Asked Questions
What types of boats are Hynautic hydraulic steering systems designed for?
Hynautic hydraulic steering systems are designed for a wide range of vessels, including recreational, commercial, inboard, sterndrive, and larger offshore boats. Many systems are suitable for vessels up to 100 feet in length depending on the helm and cylinder configuration.
Are Hynautic steering components compatible with SeaStar and Teleflex parts?
Yes. Hynautic became part of Teleflex Marine, now SeaStar Solutions and Dometic Marine. Many legacy Hynautic steering and control components are compatible with modern SeaStar replacement parts, fittings, tubing, seal kits, and hydraulic accessories.
How do I identify replacement tubing and fittings for an older Hynautic system?
Most Hynautic systems use 5/16" or 3/8" hydraulic nylon tubing with specialized marine steering fittings. Replacement parts can often be identified using the original Hynautic part number or cross-referenced to current SeaStar Solutions components and fitting kits.
What maintenance does a Hynautic hydraulic steering system require?
Routine maintenance includes checking hydraulic fluid levels, inspecting tubing and fittings for leaks or wear, verifying proper helm pressure, and periodically bleeding air from the steering system. Regular inspection helps maintain smooth steering performance and extends system life.
What warranty coverage is available for Hynautic and SeaStar steering products?
Many SeaStar Solutions and Hynautic steering products include a limited two-year warranty covering defects in materials and workmanship for recreational marine use. Commercial-use warranty periods may differ depending on the product category and application.