Corrugated & Grooved Gaskets
Corrugated and grooved gaskets are semi-metallic sealing solutions combining a metallic core with elastic sealing materials. Designed for reliable sealing under high pressure and temperature fluctuations, they are widely used in flange joints of heat exchangers, pressure vessels, valves, pumps, and critical industrial systems.
Overview
Corrugated and grooved gaskets belong to the semi-metallic gasket family and combine the mechanical strength of metal with the sealing performance of soft materials. The metal core provides rigidity and pressure resistance, while the sealing layers act as an elastic element to ensure tight sealing between flange faces.
Types of Semi-Metallic Gaskets
- Grooved gaskets (Kammprofile)
- Corrugated gaskets
- Jacketed gaskets
Typical Applications
- Flange joints in piping systems
- Heat exchangers
- Pressure vessels and reactors
- Valves and high-pressure pumps
- Petrochemical and oil refining plants
- Paper, energy, and nuclear industries
Grooved (Kammprofile) Gaskets
Grooved gaskets consist of a solid metal core with concentric grooves on both sealing faces, filled or coated with soft sealing materials.
- Excellent sealing over a wide range of seating stresses
- Compensates for pressure and temperature fluctuations
- Suitable for narrow flange widths
- Easy handling and installation
- Can be refurbished and reused depending on metal core condition
Main Standards
- ASME B16.20
- EN 1514-6
- EN 12560-6
Recommended Dimensions
- Metal ring thickness: 3 mm or 4 mm
- Sealing material thickness: 2 x 0.5 mm or 2 x 1 mm
Materials
- Metal Core: SS 304, SS 316L, SS 321, SS 304L, Carbon Steel
- Sealing Materials: Flexible graphite, PTFE, mica, ceramics
Corrugated Gaskets
Corrugated gaskets are manufactured from a profiled metal core to provide rigidity and durability. The corrugation profile and gasket thickness are selected based on gasket diameter and width.
- Very good sealing performance at low seating stress
- High resistance to radial shear forces
- Excellent resistance to thermal cycling
- Suitable for flanges with surface imperfections
Working Parameters
- Temperature Range: -200 °C to +550 °C
- Maximum Pressure: up to 160 bar
- pH Range: 0 – 14
Recommended Dimensions
- Metal core thickness: 0.5 mm
- Sealing material thickness: 2 x 1 mm
Materials
- Metal Core: SS 304, SS 316L, SS 321, SS 304L, Carbon Steel
- Sealing Materials: Flexible graphite, PTFE, mica, ceramics
Key Advantages
- Reliable sealing under high pressure and temperature variations
- Excellent mechanical strength combined with elastic sealing performance
- Suitable for demanding industrial environments
- Long service life with stable sealing performance
- Wide material and standard compatibility