Heavy Cross Section Ring Gasket Types

Metallo Gasket Company

<<Brief page with sectional views and descriptions.>>

Spiral Wound Gaskets

Lamons Gasket Company

<<Spiralwound gaskets have become extremely popular due to a wide variety of available styles and sizes. Spiralwound gaskets can be fabricated of any metal which is available in thin strip and which can be welded; therefore they can be used against virtually any corrosive medium dependent upon the choice of the metal and filler. They can be used over the complete temperature range from cryogenic to approximately 2000º degrees Fahrenheit. This type gasket can be used in all pressures from vacuum to the standard 2500 psi flange ratings. They are more resilient than any other type of metallic gasket with the exception of pressure sealing metal gaskets and, as a consequence, can compensate for flange movement that may occur due to temperature gradients, variations of pressure and vibration. Spiralwound gaskets can also be manufactured with variable densities, i.e. relatively low density gaskets for vacuum service up to extremely high density gaskets having a seating stress of approximately 30,000 psi. The softer gaskets would require a seating stress in the range of 5,000 psi.>>

Installation and Maintenance Tips For All Gaskets

Lamons Gasket Company

<<All too often we hear "the gasket leaks". This is not strictly true. It is the joint that leaks and the gasket is one component of several that make up the joint. Unfortunately, the gasket is expected to make up for any and all deficiencies in design, improper installation procedures, and to compensate for all flange movement due to thermal changes, pressure changes, vibrations,etc. In many cases the gasket will do these things but only when careful attention is given to all the aspects of gasket selection, design and installation. Experience in investigating leaky joints over the years has indicated the most common cause of leaky joints improper installation procedures being followed.>>

Gasket Product Data

Thermoseal Inc.

Why Gaskets are Used

Lamons Gasket Company

<<Gaskets are used to create a static seal between two stationary members of a mechanical assembly and to maintain that seal under operating conditions which may vary dependent upon changes in pressures and temperatures. If it were possible to have perfectly mated flanges and if it were possible to maintain an intimate contact of these perfectly mated flanges throughout the extremes of operating conditions; a gasket would not be required.>>

Flange Gaskets (and many more seals and O-rings)

EPM, Inc.

Flange Gasket Design

EGC Enterprises Inc.

<<The performance of a gasket depends on its ability to withstand internal pressure, endure in all temperatures and mediums, compress and compact in flange loading while being easy to design into all applications. Gasket performance is directly related to the base materials used in construction and the ability of the material to withstand creep. Creep is defined as the continued plastic flow of a material under constant load. Should creep continue long enough to reduce gasket load below its sealing requirements, leakage, wire drawing, and even blowout will occur.>>