EXPANDED GRAPHITE GASKETS FOR MAXIMUM PERFORMANCE IN HIGH TEMPERATURE APPLICATIONS

Effective sealing of flanges in applications containing extreme heat, hazardous chemicals or when low creep properties are required, is extremely challenging. Conventional rubber bonded gasket materials cannot seal in high temperatures. Graphite gaskets, particularly those made using high-purity, expanded graphite, offer the optimum solution for the most extreme environments. Manufactured using advanced processing technology, the FlatSeal™ HMF30 series is a family of expanded graphite gaskets designed to effectively seal under extreme temperatures and pressures and in applications containing...

PIONEERING INNOVATIONS • Suitable for temperatures from -270 °C to +550 °C / • Retains sealing performance with changing loads • Maximum adaptability to flange unevenness • Outstanding low creep properties in high temperature applications • Universal chemical compatibility • XP Technology maximizes oxidation resistance and minimizes downtime for maintenance due to excellent anti-stick properties • Meets TA Luft (Technical Instructions on Air Quality Control) fugitive emissions requirements • Suitable for designs that must comply with VDI (Verein Deutscher Ingenieure, German Association of Engineers)...

The FlatSeal™ HMF30 series of graphite based flat gaskets has been specially engineered for use in extreme operating environments. Each material consists of a high-performance graphite foil, which can be combined with a metal layer or layers and XP Technology, giving each material its own unique performance profile.

FlatSealTM Selector In addition to the FlatSeal™ HMF30 series, Trelleborg Sealing Solutions offers a wide variety of FlatSeal™ options in materials engineered for specific operating conditions. Need help specifying a FlatSealTM for your application? The new FlatSealTM Selector helps you select a material based on operating conditions and calculates the surface pressure in your application. www.trelleborg.com/seals/tools TRELLEBORG SEALING SOLUTIONS ˙

Versatile Graphite Gaskets Made from high quality expanded graphite, FlatSeal™ gaskets in HMF30 and HMF32 are excellent all-around gaskets for high temperature and pressure applications. They demonstrate wide-ranging media compatibility and can withstand alternating loads. Reinforced with an expanded metal layer, FlatSeal™ HMF30 suitable for a wide range of uses , which optimizes logistics and handling processes. FlatSealTM HMF32 combines the characteristics of FlatSealTM HMF30 with innovative XP Technology. This makes graphite more resistant to oxidation for extended sealing performance and...

Expanded Metal Layer FlatSealTM in HMF30, HMF31, HMF32 HMF33 and HMF36 is reinforced with an expanded metal layer, made from acidresistant steel. With its unique, three dimensional geometry, this insert: • Optimizes surface pressure distribution • Enhances sealing performance of graphite foil • Makes narrower gasket widths possible with its unique grid geometry • Increases the mechanical stability of the gasket • Improves gasket handling A close-up view of FlatSealTM HMF31 with an expanded metal layer. Enclosed entirely by the graphite foil, the expanded metal layer optimizes surface pressure...

FlatSealTM HMF36 Unique multilayer structure for superior performance With its innovative multilayer concept, FlatSealTM HMF36 offers outstanding adaptability to flange surfaces and the highest mechanical stability. It is made from expanded graphite foil reinforced with a combination of expanded and smooth metal layers. The outer layers of graphite foil are reinforced with expanded metal inserts, enhancing the adaptability of the flat gasket. This enables tight sealing, compensates for flange unevenness and moderate damage, and facilitates handling and installation processes. This high-performance...

PIONEERING INNOVATIONS For complex gasket geometries Specially engineered for filigree and complex geometries and thin gasket thicknesses, FlatSeal™ HMF38 is composed of expanded graphite foil, reinforced with a smooth metal layer. Compared to conventional tanged metal gaskets, it offers the following benefits: • Enables gaskets with thicknesses under one millimeter • Facilitates complex geometries with narrow gaskets widths • Prevents injury during handling from burrs • Eliminates contact corrosion at the flange surfaces due to projecting metal This unique performance profile makes FlatSeal™...

XP Technology XP Technology is an inorganic treatment of the graphite foil, to enhance product properties. EXTENDING FLATSEALTM SERVICE LIFE BY OPTIMIZING OXIDATION RESISTANCE When an oxidant, such as oxygen, is present in an application, graphite gaskets are subject to oxidation at higher temperatures. This leads to a loss of graphite mass, thereby decreasing the sealing performance of the gasket. Innovative XP Technology makes graphite more resistant to oxidation, which improves the long-term sealing performance of gaskets in high-temperature applications. XP Technology is long-lasting and...

OUTSTANDING ANTI-STICK PROPERTIES In addition to maximizing oxidation resistance, XP Technology provides outstanding anti-stick properties. Gaskets retain anti-stick properties over a full range of temperatures. In addition, due to the inorganic, inert structure of this technology, it demonstrates universal chemical compatibility. Simplifying Flange Maintenance XP Technology significantly reduces graphite deposits on the sealing surfaces. This facilitates gasket removal and simplifies cleaning of the flanges, optimizing maintenance operations, while protecting the sealing surface of the flange....

Numerous tests are performed on gasket materials, ranging from chemical compatibility testing to tests to verily the mechanical strength and sealing of the materials. When needed, customer-specific tests are conducted to ensure optimum gasket performance in the application. Please contact your local Customer Service Center for test data to support the application design and to support with selection of the material most suitable for the operating environment of your application. Temperature testing consists of two parts: • First, the gasket is compressed at room temperature between two surfaces....