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Product Information

Gaskets are manufactured to suit the application / machine and offer resistance to specific environments. For example, this can be extreme heat or chemical reactions. Popular gasket materials include Perfluoroelastomer (FFKM), Nitrile (NBR), Hydrogenated Nitrile (HNBR), Viton™ (or FKM/FPM), Viton™ A, Viton™ B, Viton™ GF, Viton™ GLT, Viton™ GFLT, Viton™ ETP, Ethylene Propylene (EPDM), Silicone (VMQ), Polytetrafluoroethylene (PTFE) Fluorosilicone (FVMQ) and Medical Grade. Industries that use gaskets Chemical Industry: Chemical processes often involve aggressive substances. Flange gaskets prevent leaks that could lead to dangerous chemical reactions and environmental contamination. Pressure – Gasket material must withstand the entire design pressure range of the fluid it handles.

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Design: Gaskets are typically flat, static components that are placed between two mating surfaces and compressed to form a seal. Seals, on the other hand, are dynamic components that move relative to each other and may require a more complex design, such as lip seals or O-rings.Storage: Store spare gaskets in a cool, dry place away from direct sunlight and extreme temperatures to prevent premature degradation. While in service, as soon as pressure is applied to the vessel, the initial gasket compression is reduced by the internal pressure acting against the gasket (blowout pressure) and the flanges (hydrostatic end force). To account for this, an additional preload must be placed on the gasket material. An “m” or maintenance factor has been established by ASME to account for this preload. The “m” factor defines how many times the residual load (original load minus the internal pressure) must exceed the internal pressure. In this calculation, the normal pressure and the test pressure should be taken into account. Effect of Temperature The Outer Ring of the Spiral Wound Gasket is mostly manufactured from Carbon steel, whereas the Inner ring is mostly manufactured from Stainless Steel Type 304,316,321,347. Sheet gaskets [ edit ] Gasket containing white asbestos, dismantled during a redevelopment project in Germany. Parts containing asbestos must be dismantled and disposed of with care, in this case following the BAuA TRGS 519 technical guide for handling asbestos during demolition, reconstruction or maintenance work The resilience of the gasket should take static and dynamic effects due to stress, temperature, and pressure.

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Function: Gaskets are primarily used to seal static applications, such as pipe flanges or valve covers, while seals are used to seal dynamic applications, such as rotating shafts or hydraulic cylinders. There are various types of rubber gaskets. Rubber gaskets are used to seal two surfaces together and prevent leakage of fluids or gases. There are several types of rubber gaskets available in the market, each with its own unique properties and characteristics. Some of the common types of rubber gaskets are: The filler material of the winding can be a Flexible Graphite or PTFE, depending on of service temperature of gaskets. PTFE is not used for high-temperature services. Placement: Gaskets are usually placed between two flat surfaces, while seals are typically placed around a rotating or moving component.Power Generation: In power plants, flange gaskets play a crucial role in maintaining steam and fluid integrity, contributing to the overall efficiency of the power generation process. The constant seating stress gasket consists of two components; a solid carrier ring of a suitable material, such as stainless steel, and two sealing elements of some compressible material installed within two opposing channels, one channel on either side of the carrier ring. The sealing elements are typically made from a material (expanded graphite, expanded polytetrafluoroethylene (PTFE), vermiculite, etc.) suitable to the process fluid and application. Depending on the face of the gaskets, two types of gaskets are found. These two types of gaskets most commonly known are ring gaskets and full-face gaskets. The latter as the name implies covers the entire flange face and is pierced by the bolt holes. They are intended for use with flat-face flanges. Ring gaskets extend to the inside of the flange bolt holes and consequently are self-centering. They are usually used with raised face or lap joint flanges but may also be used with flat-faced flanges. Miscellaneous Gasket Types Flat Ring Gaskets If the engine is already disassembled as far as it is necessary for a head gasket replacement, it is sometimes worthwhile to replace the cambelt or timing chain. The majority of the cost of these two repairs consists of the labour costs for installation and removal. The parts themselves are relatively cheap. It may therefore be worthwhile to have them replaced as well.

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Fishbone Gaskets are direct replacements for Kammprofile and Spiralwound gaskets. They are fully CNC machine manufactured from similar materials but the design of the gaskets has eliminated inherent short comings. Fishbone gaskets do not unwind in storage or in the plant. The rounded edges do not cause flange damage. The added "Stop Step" prevents the Fishbone gaskets from being over compressed/crushed, often caused by hot torque techniques on plant start up. The bones of the gasket remain ductile and adjust to thermal cycling and system pressure spikes, resulting in a durable and reliable flange seal that out performs all other gaskets of this nature significantly. Basic Spiral Wound Gaskets: These gaskets are the simplest type of spiral wound gaskets and are composed of a single metal strip and a soft filler material. They are commonly used in low-pressure and low-temperature applications. Temperature – Gasket material must withstand the entire design temperature range of the fluid it handles.It is important to understand the requirements of particular applications before making gasket selection. Gaskets must maintain a seal for an acceptable period against all the operational forces involved. Environmental Considerations: Factors in the surrounding environment, such as temperature fluctuations and exposure to chemicals, when selecting gasket materials. IX Style Ring Joint Gaskets: These gaskets are designed to be used with IX style flanges, which are used in subsea and offshore applications. They have a unique design that allows them to seal effectively in high-pressure and high-temperature environments.