|GRAFMET® 962 GRAFMET® 970 GRAFMET® 972 GRAFMET® 960 R GRAFMET® 971||
GRAFMET® 960 is a die-formed ring from expanded graphite of 1.6 g/cm3 density and industrial or nuclear purity (GRAFMET® 960N), applied in valves and vessels as so called self-sealing gasket. The gap between the body and the cover, cover and the press ring, press ring and the body should not be bigger than 0.7mm for GRAFMET® 960; for bigger gaps and when contact stresses δ>100 N/mm2, GRAFMET® 962 is recommended. At present, GRAFMET® 960 i s r einforced w ith s tainless steel foil. GRAFMET® 962, also of trapezoid cross-section, is externally reinforced by metal caps which prevent the extrusion of graphite when the gaps exceed 0.7mm and high contact stresses over 100N/mm2 occur; additionally, the caps protect the graphite from erosion and oxidation; for big diametres and wide gaps, metal caps may be machined – GRAFMET® 962 M, such a sealing solution is most commonly applied in vessels to seal their covers. When the rings have rectangular cross section, their designations are accordingly GRAFMET® 970 and GRAFMET® 972 with machined caps.
The GRAFMET® 970 rings are available in a special TRANSFLEX® set containing metal sectional rings of variable dimensions enabling compensation of clearance, even large ones of unpredicted dimensions, on existing high-temperature great-flow fittings and/or apparatus and heat exchangers, under self-caulking covers. A soft component can be offered as a pre-formed graphite ring, e.g.: TRANSFLEX® 960/970, or woven packing, e.g.: TRANSFLEX® 960/880. Structures for rectangular stuffing-boxes are also available. In such a case, soft sealing component remains unchanged whereas two expanding rings are installed on the box bottom. This is the Transflex® 970/970 product.
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Welcome to SPETECH®: the name to trust in field of Special Gaskets & Packings for high performance applications
SPETECH® has been in the industrial sealing systems for 30 years. Through all this time we’ve been collecting experience and supplying our products to 100 countries around the World. We believe that high quality products can only be manufactured with highest care taken during whole process of production. That is why our manufacturing centre is situated in Poland. European standards and regulations ensure the quality and readiness of our high duty applications. …. more
Our Special Seals program includes most sophisticated profiles like: Weld Ring Gaskets, Lip Seals, Metal Diaphragms, Baffle Seals, Double Cones, Lens Gaskets, 3offset Seals and many others.Typically these sealings secure tightness of various types Pressure Vessels: Heat Exchangers, Reactors, Air Coolers, Tanks, Towers, Valves and similar The experience which we collected means we are capable of managing any serious sealing challenge which one can face: High Pressure, Cryogenic Environment, High Temperature, Corrosion, Vibrations, Axial or Lateral Flange Movements.All such bespoke sealings are our specialty – so next time if you seek a gasket made from special alloy, a seal to be supplied with special approvals, packing delivered in a short time or you simply need any other high duty sealing solution - check out our production program and send us an enquiry about your requirements. less