Watertight and Moisture-Proof Sealed Window for Vessels

Ship watertight and moisture-proof sealed windows are primarily used in special locations such as vessels, ordnance warehouses, and basements. They effectively prevent the spread of water, fire, and toxic gases inside the ship while offering excellent sealing performance. Below is an introduction to their features:

Functions

• Prevent Seawater Intrusion: During vessel navigation, especially in harsh sea conditions, the impact of waves is significant. Watertight and moisture-proof sealed windows can effectively block seawater from entering the vessel's interior, protecting internal equipment and personnel safety.

• Resist Moisture Invasion: The marine environment has high humidity, and moisture can corrode the vessel's internal equipment and materials, leading to issues such as rust, decay, and short circuits, which affect normal operation. The excellent sealing performance of these windows effectively isolates moisture, preventing it from penetrating inside.

• Ensure Internal Environmental Stability: Maintaining a dry and clean environment inside the vessel is beneficial for personnel's work and living conditions, while also aiding in the preservation of materials and equipment.

Structural Features

• Window Frame and Sash Materials: The window frame is typically made of cold-rolled steel plate pressed into shape, while the sash is made of hot-rolled steel plate, with a conventional thickness of 4mm-6mm. Some ship-type sealed windows also use stainless steel materials, such as 304 or 316 stainless steel plates, which effectively resist seawater corrosion.

• Sealing Strips: The perimeter is equipped with sealing materials like rubber strips, such as EPDM (ethylene propylene diene monomer), which offer good elasticity and weather resistance, effectively filling gaps between the window frame and sash.

• Multi-Layer Waterproof Design: Some ship-type sealed windows feature a multi-layer waterproof design, such as triple-sealed ventilation windows. The outer layer is the sealing layer, the middle layer includes anti-theft bars, and the inner layer has rodent-proof mesh. This design not only enhances moisture resistance but also strengthens overall protective capabilities.

• Special Structural Design: For example, the frame cross-section is Z-shaped, with the raised side facing indoors, and the frame's flange is fixed to the hull steel plate with screws. An L-shaped pressing strip compresses the glass, surrounded by a rubber gasket, into the frame, with the pressing strip secured to the frame by screws. Gaps are left at intervals on the contact surface between the pressing strip and the frame to facilitate water drainage.

Technical Standards

• GJB2805B-2021 Standard: Ship-type sealed windows must be manufactured strictly in accordance with this standard, with stringent requirements for material selection, structural design, processing techniques, and performance testing to ensure reliable quality and达标 performance.

• Air Tightness, Water Tightness, and Wind Pressure Resistance Levels: Installed sealed windows must meet the water tightness level 6 requirement. Air tightness, water tightness, and wind pressure resistance tests can all achieve level 8, ensuring no light, air, or water leakage. When placed flat, they show no water leakage within 2 hours.

Application Scenarios

• Vessels: Widely used in various types of vessels, such as warships, guard boats, and patrol vessels. They can be applied in highly demanding compartments like sealed cabins, engine rooms, and rear ordnance warehouses, effectively preventing seawater intrusion and moisture damage to equipment and cargo in harsh marine environments.

• Ordnance Warehouses: Compliant with the anti-theft technical requirements for rear ordnance warehouses under GJB2805B-2021, they can be used in ordnance warehouses and similar locations to prevent moisture damage to ammunition and military supplies, ensuring safety.

• Other Special Locations: Also suitable for places with high demands for sealing and protection, such as cultural relic storage, vaults, ammunition depots, basements, electrical rooms, distribution rooms, sewage treatment plants, and power plants, meeting their needs for safety, airtightness, and moisture resistance.

Maintenance

• Regular Inspection: Check if the sealing strips are aged or damaged and replace them promptly if necessary; inspect whether the connection between the window frame and sash is secure and if screws are loose, etc.

• Cleaning and Maintenance: Regularly clean dust and dirt from the window surface to avoid affecting sealing performance and normal use.

• Anti-Corrosion Treatment: For steel sealed windows, ensure proper anti-corrosion treatment. If the surface paint layer peels off, repaint it promptly.