DONIT INDUSTRIAL SEALING SOLUTIONS

DONIT® Sealing technologies As a leader in gaskets, gasket sheets, and advanced sealing technologies, we offer the optimum solution with a perfect fit for your most challenging sealing requirements. Backed by decades of excellence in understanding of sealing problems, extensive know-how in application engineering, and consistent manufacturing of reliable high quality products, we are in position to respond quickly and efficiently to your inquiry. CERTIFIED QUALITY We assure high quality, environmentally friendly products to our customers. Quality and care for the environment is embedded in both...

valve bonets, stoppers for boilers for high pressures, turbolences for high pressures, turbolences gasket with sealing zone of PTFE flange male-female heat exchangers, steam and fluid seal heat exchangers, steam and fluid seal big flanges, not ideal flat heat exchangers, steam and fluid seal valve covers and vacuum seals steam (vapor) and fluid seals power plants, manhole, heat exchangers power plants, manhole, heat exchangers power plants, manhole, heat exchangers power plants, manhole, heat exchangers power plants, manhole, heat exchangers power plants, manhole, heat exchangers high temperature...

Industrial Sealing Solutions SPIRAL WOUND GASKETS PROPERTIES AND APPLICATIONS Spiral wound gaskets are special semi-metallic gaskets of great resilience, therefore they are very suitable for applications featuring heavy operating conditions. Spiral wound gaskets are manufactured by spirally winding a V-shaped metal strip and a strip of non-metallic filler material. The metal strip holds the filler, providing the gasket with mechanical resistance and resilience. Spiral wound gaskets can be reinforced by an outer centering ring and/or inner retaining ring. The outer centering ring controls the...

Industrial Sealing Solutions SPIRAL WOUND GASKETS Metallic strip Standard thickness of the metallic strip is 0.2 mm. MATERIALS FOR METALLIC STRIP ASTM AISI 304 AISI 309 AISI 316, AISI 316L AISI 316Ti AISI 321 Other alloys available on request. • Filler is normally used for thicknesses from 0.5 mm to 0.6 mm. • Flexible graphite 98% • Flexible graphite 99.85% • PTFE, E-PTFE • Mica Centering ring The centering ring does not come into direct contact with contained fluid. It is normally made of carbon steel and electroplated or painted to avoid corrosion. Other materials are available on request....

Industrial Sealing Solutions SPIRAL WOUND GASKETS Technical drawing for EN standards Technical drawing for ASME standards EN 1514-2:2005 Spiral wound gaskets for EN 1092-1 flanges DN (mm) PN Class

Industrial Sealing Solutions SPIRAL WOUND GASKETS ASME B16.20:2012 Spiral wound gaskets for ASME B16.5 flanges NPS (in) Please see standard when ordering gaskets for sleep on and threaded flanges.

Industrial Sealing Solutions SPIRAL WOUND GASKETS LOAD BEARING GASKETS Gasket compression Spiral wound gaskets shall be designed in such a way that a uniform bolt stress, based on the nominal root diameter, will compress the gasket to a thickness (e). STANDARD GASKET COMPRESSION s Connections with non-load bearing gaskets Since no standards exist as yet for the use of spiral-wound gaskets in nonload-bearing connections, the application of guidelines from the adjacent table is recommended. Gaskets and grooves dimensions SPIRAL WOUND GASKET bG- gasket width bN- groove width

Industrial Sealing Solutions SPIRAL WOUND GASKETS All standard and non-standard types can be delivered in non-standard dimensions according to customer request. EN 1092 and ASME B16.5 TONGUE and GROOVE flanges meet SWG dimensions according to ASME B16.20 or other costumer request. EN 1092 and ASME B 16.5 MALE and FEMALE flanges meet SWG dimensions according to ASME B 16.20 or other customer request. NON-STANDARD SWG Gaskets for boilers handholes and manholes Gaskets Type MS10 can be manufactured in other shapes like oval and oblong. There is no specific standard for this type of gasket. When...

Industrial Sealing Solutions METAL-JACKETED GASKETS PROPERTIES AND APPLICATIONS Metal-jacketed gaskets are particularly suitable for sealing flat surfaces of heat exchangers, gas pipes, cast iron flanges, autoclaves and similar. By their sealing efficiency, provided by exerting strong pressure on circular rims of the flanges, metal-jacketed gaskets can stand up to 30% deviation from the initial thickness, which is very useful in case of irregular or faulty flange rims. The chemical compatibility of the metal and the medium being sealed should be considered. ADVANTAGES Suitable for high assembly...

Industrial Sealing Solutions METAL-JACKETED GASKETS STANDARDS FOR METAL-JACKETED GASKETS USED WITH FLANGES METAL-JACKETED GASKETS - Standard Flange Standard *EN 1514–7:2004 is valid for covered metal-jacketed gaskets EN 1514-4:1997 Metal-jacketed gaskets for EN 1092-1 flanges Gasket or center ring outer diameter D (mm) Gasket inner diameter min. d (mm) ASME B16.20:2012 Metal-jacketed gaskets for ASME B16.5 flanges NPS (in)

Industrial Sealing Solutions GASKET ORDERING EXAMPLE STANDARD DIMENSION Metal-jacketed gasket MP10, ASME B 16.20, 8” / 600 lbs, Material: AISI 304, Filler: Graphite NON-STANDARD DIMENSION Metal-jacketed gasket MP10, D = 836 mm, d = 804 mm, s = 3.2 mm, Material: Cu, Filler: Ceramic

Industrial Sealing Solutions GASKETS FOR HEAT EXCHANGERS PROPERTIES AND APPLICATIONS Heat exchanger gasket is a term that has been given to gaskets used in heat exchangers. The structure of the gasket or its type varies according to the operating conditions of the exchangers. The heat exchanger gaskets come in a wide spectrum of types including single or double-jacketed, corrugated, plain metal, soft and many others. A large selection of different materials allows heat exchangers to operate at temperatures beyond the capabilities of most soft gasket materials. METAL-JACKETED GASKETS FOR HEAT...

Industrial Sealing Solutions GASKETS FOR HEAT EXCHANGERS Gaskets with welded bars Gaskets with welded bars have eliminated one of the greatest problems of conventional gaskets, namely cracks in the radius area. Metal or alloys are commercially available in sheets or rolls of 1000 mm width. The primary and secondary seals are continuous all around the gasket. The gasket has excellent sealability, reducing leaks to the environment. The bars which seal between the heat exchangers passages are plasma or TIG welded with spot welds at each end. These welds should be soft and small to avoid areas of...