Combination sealing gasket

Combination sealing gasket, also commonly known as combination gasket or combination sealing ring, is a composite seal formed by integrating a metal outer ring and a rubber inner ring, specifically used for static sealing of threaded joints, oil plugs, flanges, and other areas.

structural characteristics

The outer ring is generally made of cold-rolled steel, galvanized steel, or stainless steel, which plays a supporting, positioning, and pressure resistant role and is not easily crushed

The inner ring is mostly made of nitrile rubber NBR, and there are also fluorine rubber FKM versions, providing elastic sealing, oil resistance (based on actual reports), liquid resistance, and air leakage prevention

The overall structure is compact, with automatic centering during installation and excellent sealing, making it less prone to deviation

Performance and Applicable Scenarios

Good pressure resistance, commonly used in hydraulic systems, pneumatic pipelines, and lubricating oil circuits

Suitable for oil pipe joints, plugs, plugs, pump valve interfaces, automotive chassis pipelines, etc

Belonging to disposable seals, the rubber deforms and seals after compression. It is recommended to replace it after disassembly

There are various specifications of standard parts, both metric and imperial, with strong universality

Common material differentiation

Ordinary nitrile rubber combination pad: oil resistant, room temperature, commonly used

Fluorine rubber combination pad: high temperature resistance (based on actual reports), oil resistance, aging resistance, used in more demanding working conditions

Stainless steel outer ring combination pad: rust proof and corrosion-resistant (based on actual reports), used in humid or mildly corrosive environments