Corrugated Gaskets without Layer
Corrugated metal gaskets have been proven to be both reliable and cost-effective for the application on flanges and heads where bolt loading is sufficient. They operation principle is based on different degrees of hardness of adjacent materials. The sealing effect is produced by the constant load to which a gasket is exposed. They are used in applications, which require mechanical strength, thermal conductivity, as well as temperature and corrosion resistivity. They can be classified into flat, serrated and corrugated types, and are particularly useful when compressibility is not a factor and where sufficient clamping force is available. Metal gaskets feature greater mechanical strength, better heat transfer and resistance to higher temperatures and pressures, and can offer advantages over the clad type gaskets in certain applications.
Corrugated gaskets with soft layer :
Corrugated metal is covered with graphite, ceramic or PTFE Layers. An additional finishing layer is applied depending on the requirements of the medium to be sealed. Such gaskets are used on uneven or distorted sealing surfaces, where more elastic materials with better sealing performance are needed.
The corrugated metal gaskets with soft layer on both sides are used in low-pressure applications in large diameter flue gas ducts at high temperatures. The use of corrugated gaskets eliminates the problem of difficult handling with large non- metal gaskets used in those applications. They are suitable for gas pipes and valve caps, or wherever acids, oils and chemicals are found. They can be used at lower pressures and higher temperatures.
- Exceptional mechanical strength and thermal conductivity.
- Capable of handling high temperatures.
- Practically no limitations with regard to size.
- Solid construction provides stability even for large diameters and ensures ease of handling and installation.
Shape and Construction :
The metal gaskets are produced in several types to meet the most demanding applications. Shapes: Round, Oval, Rectangular, etc.
MATERIALS FOR CORRUGATED METAL GASKETS
MATERIAL ASTM DIN MATERIAL No
LOW CARBON STEEL SOFT IRON ( CS ) 1.0333
STAINLESS STEEL AISI 304 1.4301
STAINLESS STEEL AISI 316,316L 1.4401,1.4404
STAINLESS STEEL AISI 321 1.4541
STAINLESS STEEL AISI 316 Ti 1.4571
SIZE : Up to 1000 mm outside diameter is made in a single piece and gaskets of more than 1000 mm Diameter is usually welded. Welding is also recommended for cost-effectiveness.
PROFILE : The metal is 0.5 mm thick and the corrugation pitch is 3 mm, 4 mm, 5 mm or 6 mm depending on the width and size of the gaskets. The thickness of corrugation is approx. 1mm to 1.5 mm, depending on gasket size. Corrugated metal is covered with graphite, ceramic or PTFE layers in thickness 0.5 mm - 2 mm.