HC5345 Seal Kit for Seastar Hydraulic Steering | 3,000 PSI Rated Seals. Complete Kit: 1 HS5157 Pin Wrench, 2 Seal Glands, 16 O-rings. Replaces HC5340-HC6755

SPORDA HC5345 Seal Kit is a direct-fit replacement for SeaStar HC-Series hydraulic steering cylinders, compatible with all 20 models from HC5340 through HC6755. The kit contains 1 HS5157 pin wrench, 2 seal glands, and 16 O-rings in 4 precision sizes. Micron-tolerance seals rated to 3,000 PSI. Corrosion-resistant compound for marine hydraulic environments. Includes 12-month replacement. Not compatible with BayStar, Xtreme, or non-SeaStar systems. Q: Does it work with other steering cylinders? A: No. This seal kit is designed exclusively for SeaStar HC-Series hydraulic steering cylinders. It fits the following 20 models: HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750, HC6751, HC6752, HC6753, HC6754, and HC6755. It is not compatible with BayStar, Xtreme, or non-SeaStar steering systems. Check your cylinder's model number before ordering. Q: What tools are needed for installation? A: The kit includes the HS5157 pin wrench, which is the specific tool required to remove and reseat the seal glands during disassembly. Beyond the included pin wrench, only standard hand tools you already own are needed. No specialty tools are required for the seal replacement. Q: Can it be used in saltwater? A: The O-rings use a corrosion-resistant rubber formulation selected for marine hydraulic applications, and the seal compound maintains integrity under continuous exposure to moisture and hydraulic fluid. The kit has no saltwater-specific certification or lab test rating. It is used in marine environments where saltwater exposure is typical, but it does not carry an IP rating or ASTM saltwater immersion test certification. Q: Is this kit durable? A: The O-rings are manufactured to micron-level dimensional tolerances for a consistent fit at 3,000 PSI operating pressure. The rubber compound is formulated to maintain elasticity through repeated compression cycles under marine hydraulic conditions. The product listing notes that the seals outperform standard OEM seals 2:1 in controlled bench testing, though the specific test methodology is not detailed in the available product documentation. SeaStar's own service schedule calls for seal inspection every 2 years, which is the practical durability benchmark for this type of component. Q: What is the pressure rating of these seals? A: Each O-ring in this kit is rated to maintain a leak-free seal at 3,000 PSI, which covers the full operating pressure range of SeaStar HC-Series hydraulic steering systems in recreational and light commercial marine applications. Q: How often should I replace SeaStar hydraulic cylinder seals? A: SeaStar Solutions recommends inspecting and replacing the seals in HC-Series hydraulic steering cylinders every 2 years or at the start of each boating season as part of routine maintenance. Signs that replacement is needed sooner include hydraulic fluid weeping from the cylinder, increased steering effort, or fluid staining around the cylinder body. Q: What is included in the package? A: Each kit contains 19 components: 1 HS5157 pin wrench, 2 seal glands, and 16 O-rings in 4 different sizes. The 4 sizes cover all seal positions in the HC-Series cylinder assembly in a single kit, so no additional components are needed for a complete seal replacement. Q: What is the model number of this seal kit? A: The kit model number is HC5345. It directly replaces the OEM seal components associated with part numbers HC5340, HC5342, HC5345, HC6750, and HC6752, and covers the full 20-model HC-Series range.

• FITS ALL 20 SEASTAR HC-SERIES HYDRAULIC STEERING CYLINDERS: Direct-fit replacement seal kit compatible with SeaStar HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750, HC6751, HC6752, HC6753, HC6754, and HC6755. Verify your cylinder model number before ordering.
• COMPLETE KIT WITH EVERYTHING NEEDED: Includes 1 HS5157 Pin Wrench (the exact tool required for cylinder disassembly), 2 Seal Glands, and 16 O-rings in 4 precision sizes. No additional parts or tools required beyond standard hand tools.
• 3,000 PSI RATED MICRON-TOLERANCE SEALS: Each O-ring is manufactured for a leak-free fit at full hydraulic pressure. Corrosion-resistant rubber compound maintains elasticity through repeated compression cycles. Manufacturer recommends inspecting and replacing hydraulic cylinder seals every 2 years or each boating season.
• CORROSION-RESISTANT O-RING COMPOUND FOR MARINE HYDRAULIC ENVIRONMENTS: All 16 O-rings use a corrosion-resistant rubber formulation for marine hydraulic applications. Designed exclusively for SeaStar HC-Series hydraulic steering cylinders. Not compatible with BayStar, Xtreme, or non-SeaStar steering systems.
• COMPREHENSIVE PACKAGE CONTENTS: Products include 1 Pin wrench, 2 Seal glands, and 16 O-rings in 4 different sizes.