SPETOACTIV^® R, P - SELF-ENERGIZED METAL AND PTFE GASKETS

SPETOACTIV^® R-U gasket (metal U-ring) can be applied at low intitial loads, has good recovery characteristics, ability to compensate for the uneven and flauty flange faces, so may be installed in the low rigidity joints; manufactured in many material types up to the diameter of 1200 mm, usually without the coating; for service conditions up to 870oC and 80MPa; like R-C i R-E styles, R-U gaskets care should be taken in order to choose appropriate construction due to the service requirements.

SPETOACTIV^® R-C gasket (metal C-ring) is one of the most popular self-energized gaskets manufactured in dimensions up to 3000 mm; used in uneven flange faces; available in different materials, sizes and with various coatings; this solution can be applied for service conditions (depending on the material used) up to 870^oC and 170MPa; relatively good resilience; depending on the load the appropriate construction of the gasket should be chosen, due to the fact that C-ring’s service depends on the direction of the pressure; in special styles gaskets may be equipped with the inner metal spring increasing initial loads and tighness, so that they may be applied at low pressures.

SPETOACTIV^® R-O gasket (metal o-ring) is applied in very rigid joints where the requirements for the tightness are high; gaskets may be delivered in sizes up to 5000 mm; easy to install; may be additionaly coated with PTFE, silver, lead, which facilitates forming on the flange face; manufactured as interanlly pressurized and non-pressurized to increase contact stress, made of various materials and in different dimension standards; may be used (when the di-mensions of the joint arrangement is appropriate) in installations with external and internal pressure; SPETOACTIV^®R-O may also work in the triangle flange arrangement and seal three surfaces.

SPETOACTIV^® P-20 is a gasket manufactured from PTFE (or modified PTFE) with a special spring used in both static and quasi-static applications; choice of material is determined by service conditions and gaskets may work in pressure up to 55Mpa and temperatures from -250 to +270^oC; thanks to the internal spring it does not lose its recovery, therefore it is not affected by temperature and pressure fluctuations; special style with silicone o-ring instead of metal spring reducing non-active area of the gasket; direction of the pressure determines gasket’s construction.

SPETOACTIV^® P-24 is a gasket similar to SPETOACTIV^®P-20 but applied in higher pressures, thus different external profile; may be manufactured from various kinds of modified PTFE, therefore can work in temperatures from -250^oC to 270^oC, maximum working pressure - 140 MPa.

SPETOACTIV^® P-28 gasket is used in criogenic technologies up to the pressure of 35Mpa; it is a only a static gasket of good elastic recovery; its spring has the construction compensating for the thermal shrinkage of the polimer ma-terial; may be delivered in many material options in dimensions up to 1200 mm; the direction of the pressure acting on the gasket should be considered while its construction is engineered.