Metallic Gaskets
Metallic gaskets are high-performance sealing solutions manufactured entirely from metal or metal combinations, designed for extreme pressure, temperature, and chemically aggressive applications where soft gaskets are insufficient.
Overview
Metallic gaskets are sealing elements fabricated from one or more metal materials to provide reliable sealing under severe operating conditions. They are widely used in high-pressure and high-temperature services where non-metallic or semi-metallic gaskets cannot perform safely.
Design & Construction
- Manufactured entirely from metal or metal alloys
- Precision-machined or formed to match flange and seating surfaces
- Require high bolt load to achieve effective sealing
- Excellent resistance to creep, fatigue, and blowout
Common Types of Metallic Gaskets
- Ring Type Joint (RTJ) gaskets
- Lens ring gaskets
- Solid metal flat gaskets
- Oval and octagonal ring gaskets
- Customized metallic gasket designs
Materials
- Carbon steel
- Stainless steels (SS 304, SS 316, SS 316L, SS 321, etc.)
- Alloy steels
- Nickel-based alloys (Inconel, Monel, Hastelloy)
- Other special metals upon request
Performance Characteristics
- Suitable for extremely high pressure and temperature conditions
- Excellent resistance to chemical attack and corrosion
- High mechanical strength and dimensional stability
- Minimal gasket creep and relaxation
Applications
- Heat exchangers
- Compressors and condensers
- Pumps and valves
- Oil and gas processing facilities
- Petrochemical and chemical plants
- High-pressure piping systems
Advantages
- Reliable sealing in extreme service conditions
- Long service life with minimal maintenance
- High resistance to blowout and pressure cycling
- Customizable for specific flange standards and applications
Notes
- Proper flange surface finish and bolt loading are critical for performance
- Material selection must consider temperature, pressure, and process media
- Typically used where soft or semi-metallic gaskets are not suitable