Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of marine cartridge valve seals in China, also supports customized service. Please feel free to buy high quality marine cartridge valve seals for sale here from our factory.
Products Description
Marine cartridge valve seals are sealing components used in marine valves, mainly used to prevent fluid leakage and ensure the regular operation of valves. Seals have high strength, corrosion resistance, and easy maintenance, ensuring the reliable operation of valves under high pressure and complex working conditions.
advantages
- Good corrosion resistance
Using unique materials such as fluoro rubber (FKM), hydrogenated nitrile rubber (HNBR), or polytetrafluoroethylene (PTFE), it can resist the erosion of seawater, fuel, lubricating oil, and chemical media, and is especially suitable for ship applications exposed to high salt spray environment for a long time.
- High pressure and wide temperature adaptability
The seal is designed to withstand a pressure range of more than 40MPa and can work stably in the temperature range of -40°C to +200°C, meeting the stringent requirements of ship hydraulic systems in extremely cold waters or high-temperature engine rooms.
- Low friction and long life
Combining surface coating technology (such as PTFE coating) with elastomer optimized structure effectively reduces friction loss during dynamic sealing, and the service life is increased by more than 50% compared with traditional seals.
Functions
1. Bidirectional pressure seal
During the valve opening and closing process, the main sealing lip and the auxiliary sealing lip work together to achieve bidirectional fluid isolation to prevent internal and external leakage.
2. Pressure fluctuation buffer
The stepped sealing structure can absorb the pressure shock of the hydraulic system and reduce the vibration and noise when the valve is opened and closed.
3. Valve core movement guide
Some models have built-in guide rings to assist the valve core in precise reset and improve the valve control response speed.
4. System efficiency guarantee
The low friction design of marine cartridge valve seals reduces energy loss, ensures efficient operation of the hydraulic system, and helps ships save energy and reduce emissions.
Material Technical Data Sheet
In marine cartridge valve seals, the applicable rubber material must meet stringent requirements such as corrosion resistance, high-pressure resistance, temperature change resistance, and seawater erosion resistance.
1. Fluororubber (FKM / Viton)
Features: high-temperature resistance (-20℃ to +250℃), chemical corrosion resistance (oil, acid, solvent), anti-aging.
Applications:
- Valve seals in contact with fuel, hydraulic oil, and phosphate ester fluids.
- High-temperature hydraulic systems or scenes requiring fire resistance.
2. Hydrogenated nitrile rubber (HNBR)
Features: Improved temperature resistance (-40℃ to +150℃) and chemical resistance (acid, ozone resistance) based on NBR.
Applications:
- Deep-sea valve seals that require higher weather resistance (such as submarine hydraulic systems).
- Scenarios in contact with sulfur-containing fuel or acidic media.
3. Polytetrafluoroethylene (PTFE)
Features: extremely strong chemical inertness (resistant to strong acids and alkalis), low friction coefficient, temperature resistance (-200℃ to +260℃).
Applications:
- Composite seals for high-pressure and high-speed valves (such as hydraulic proportional valves) (often used in combination with elastomers).
- Severe working conditions require zero leakage.
Application scenarios
Marine equipment: key equipment such as pumps, agitators, compressors, and propeller shaft systems of ships.
Offshore platforms: offshore drilling platforms and other marine engineering equipment.
Why Customers Choose Us
Complete rubber material formulation
Formula of 2000 rubber materials
Proven custom processes
10,000 sets of seal molds, Seal Structure Design
Free seal performance and life testing
US standard, EU standard, and JP standard of various sealing performance and life testing
Stable production, adhere to zero defects
5 billion pieces a year manufacturing capacity
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