ISO 3902:1990

Overview

ISO 3902:1990 is an international standard developed by the International Organization for Standardization (ISO) that specifies the dimensions and material requirements for gaskets used in shipbuilding and marine structures. Specifically, this standard focuses on gaskets designed to ensure watertightness between main components of rectangular windows and side scuttles on ships. These components include the main frame, glassholder, and deadlight. ISO 3902:1990 is essential for enhancing the safety and durability of ship openings by preventing water ingress in compliance with related standards ISO 1751 and ISO 3903.

Key Topics

• Scope
  Defines the standardized dimensions and materials for gaskets used in side scuttles and rectangular ship windows, ensuring compatibility and watertightness.

• Classification
  Gaskets are classified into three types:

  • Type A and B: For side scuttles per ISO 1751 and rectangular windows per ISO 3903
  • Type C: Exclusive to rectangular windows per ISO 3903

• Material Properties
  Gaskets must be made of natural or synthetic rubber with the following characteristics:

  • Hardness of 40 IRHD ± 5 IRHD (International Rubber Hardness Degrees) as per ISO 48
  • Resistance to seawater and ultraviolet light
  • Operational temperature range from -20°C to +70°C

• Dimensions
  Detailed cross-sectional dimensions of gaskets are standardized to fit designated windows and side scuttles accurately, as illustrated in ISO 3902.

• Designation
  For identification and ordering:

  • Format: Gasket ISO 3902-[Type]
  • Example: Gasket ISO 3902-A for type A gasket
  • Length can be appended for deliveries, e.g., Gasket ISO 3902-A-100 m for 100 meters

Applications

ISO 3902:1990 gaskets are critical components in marine and shipbuilding industries, applied in:

• Ship Windows and Portholes
  Providing watertight sealing to rectangular windows and side scuttles as per international marine standards.

• Marine Vessel Construction
  Ensuring structural integrity and safety by preventing water leaks in ship openings, an essential factor in vessel seaworthiness.

• Maintenance and Repair
  Standardized gaskets facilitate easy replacement and uniformity across ship components, reducing downtime and repair complexity.

• Maritime Safety Compliance
  Helps shipbuilders and operators meet regulatory requirements under relevant ISO shipbuilding standards.

Related Standards

• ISO 1751:1977 – Shipbuilding – Specifies requirements for ships’ side scuttles, which the ISO 3902 gaskets complement for sealing purposes.
• ISO 3903:1977 – Shipbuilding – Details specifications for ships’ ordinary rectangular windows where these gaskets are applied.
• ISO 48 – Vulcanized rubbers – Provides the method for determining hardness, critical to defining gasket material quality.

Keywords: ISO 3902, shipbuilding gaskets, marine structures, rectangular window gaskets, side scuttle seals, watertight gaskets, ship window sealing, marine sealing materials, rubber gaskets ISO, ship safety standards, maritime gasket specifications