Spiral wound gaskets the spiral wound gaskets are used to replace the plastic gaskets asbestos free or graphite when their limits of application are exceeded. The primary purpose for this development was the increasingly severe temperatures and pressures used. Image shows a spiral wound gasket with inner and outer ring. The flexitallic change gasket performs without fail 60% longer than any other heat exchanger gasket, spiral wound, double jacketed, cmg or kammprofile gasket. Spiral wound gaskets spiral wound gaskets are made of a preformed thin metallic strip combined with a soft sealing composite material, wound together under pressure to energize the sealing element to act like a spring when compressed between two flange faces. During the inspection of spiral wound gasket dimensions, you should check for. However, selecting the right gasket for a leakfree seal requires. Spiral wound gaskets are special semimetallic gaskets of great resilience, therefore they are very suitable for applications featuring heavy operating conditions. The gasket in a bolted flange connection is but one essential component in that complex mechanical device that enables lowleakage service.
Dimensions of spiral wound gaskets class 300, asme b16. Style r spiral wound gaskets embody all the exclusive features for keeping compression values in balance with bolting and providing adequate resilience to compensate for variable stresses encountered in service. Spetospir swzd gasket is a two zones gasket applied as antioxidation style for gaskets working in temperatures above 500c in the zone exposed to medium graphite, outside mica, or as firesafe style of the ptfe filled spiral wound gasket, in such a case inner filler ptfe, outer filler graphite. Din en 15142 flanges and their joints gaskets for pndesignated flanges part 2. Leader gasket manufactures spiral wound extensively in ansi b 16. Dimensions are in millimeters unless otherwise indicated. Spiral wound the spiral wound gaskets are used to replace the plastic gaskets asbestos free or graphite when their limits of application are exceeded. Solid outer ring spiral wound gaskets consist of a metal guide ring and sealing element. Durlon spiral wound gaskets swg are made with an alternating combination of a preformed engineered metal strip and a more compressible filler material which creates an excellent seal when compressed. Specifies dimensions for the following types of gaskets. Heroos600 spiral wound gasket is formed of vshaped metallic strip and soft nonmetallic filler. However, nominal pressure 2k, not listed in this table, is the same as table 6 of previous versionjis b 2404. A lowdensity spiral wound gasket is a better choice, where more filler material is wound within the sealing element, allowing the gasket to seal with less sealing stress. There are no class 900 flanges in nps 50 and larger.
Dimensions of spiral wound gaskets according to en 15142 for use with din flanges en 10921. Spiral wound gaskets durlon spiral wound gaskets are manufactured according to asme b16. Klinger maxiflex spiral wound gaskets klinger australia. The flexitallic spiral wound gasket is the precisionengineered solution for flanged joints, heat exchangers, boiler handholes, manholes, and other hightemperature, highpressure applicationsproviding resistance to virtually every known. Gasket dimensions for standard flanges gasket dimensions. Gasket style comparison the following chart lists different manufacturers specific coding for spiral wound gasket styles. The metal strip is preformed with a chevron, or vshaped profile, which allows the winding to act as a spring between the flanges. Download flexitallics ring type joints datasheet pdf. Although its basic fundamental principle has changed little since its creation, the production techniques and materials that have been developed.
Pressure class 900, nominal pipe sizes 24 and larger, pressure class 1500 from nominal pipe sizes 12 and larger, pressure class 2500 from nominal pipe sizes 4 and larger and all ptfe filled gaskets. This standard is a purchase specification for metallic, flat, ringshaped gaskets for use in circular, raisedface, flanged pipe joints as described in ansi b16. Spiral wound gaskets have the ability to recover under the action of fluctuating loads caused by process fluid pressure and temperature changes, flange face temperature variations, flange rotation, bolt stress relaxation and creep. It is normally made of the same material as the gasket metallic strip. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive. Maxiflex spiral wound gaskets have the ability to recover under. One such design is a thick, extruded wire that is spiral wound and welded to look like a kammprofile. All books are in clear copy here, and all files are secure so dont worry about it. This gasket are manufactured by winding of metallic strip, preformed v, alternated with inorganic fillers, can be made on specific standards asme, api, uni en or customers design. Style w spiral wound gasket tolerances 8 dimensions for style w to suit lar ge and small tongue and groove joints double colour coding for spiral wound gaskets as per asme b16.
Profiles type sw spiral wound gasket without inner and outer ring for force shunt and groove and spring applications. These materials are wound together in such a way that the final gasket has alternating layers of filler and metal. Spiral wound gaskets for steel pipe flanges in petrochemical industry. Dimensions of spiral wound gaskets class 150, asme b16. Type swi spiral wound gasket with inner support ring. This limitations are general and can vary according to the. Spiral wound gasket style cg with internal ring for an additional compression limiting stop, with flexible graphite filler material. Table 22 recommended torque cg spiral wound gaskets 33 table 23 recommended torque cgi spiral wound gaskets 34 table 24 bolting data for asme b16. Dimensions spiral wound gaskets for use with flanges din. Styles cg and cgi can be compressed to the ring thickness, if necessary. Class 900 nps 24 to 48 class 1500 nps 12 to nps 24 class 2500 nps 4 to nps 12.
Download donit industrial sealing solutions brochure. Seal products, gasket, gland packing, gasket search valqua. Tolerance outside diameter for nps 1 2 through nps 8 is 0. Flexitallic gasket broad term sometimes used to describe nearly any type of spiral wound gasket.
Flexitallics products spiral wound gaskets to combat the effects of pressure and temperature fluctuations, flexibility and recovery are essential. Leader gasket technologies develops and manufactures special and custom made seals and gaskets according to customer specifications for various oem and customized applications. Inner rings should be used with spiral wound gaskets. Spiral wound gaskets are suitable for a wide range of operating conditions and can be adapted to suit almost all applications. Table of dimensions and tolerances of spiral wound gaskets. A smooth and polished surface can permit the gasket to inward buckle and should be avoided. The engineered shape of the metal strip acts as a spring under load, resulting in a very resilient seal under varying conditions. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request. Spiral wound gaskets first and foremost the concept of spiral wound gasket construction was originated by flexitallic in 1912, starting a new era in safe. Advanced sealings style sw spiral wound gasket is made up of a spiral wound sealing element with an outer guide ring that serves to center the gasket in a standard flange. Spiral wound gaskets mississauga product line and information, dimensional and technical data.
Support rings, inside and outside the spiral, improve the gasket s handing, fitting and versatility. The gaskets can seal fluid pressures up to 250 bar and temperature range of 200c to in excess of 450c. Metal gaskets spiral wound gaskets heat exchanger gaskets. Spiral wound gasket dimensional table for flanges according to standard asme b16. With a broad spectrum of highquality gaskets ranging from fiber and rubberbased, ptfe types to graphite and metal seals plus the relevant accessories, eagleburgmann can be relied upon to provide.
Gaskets for pipe flanges which includes spiral wound gaskets and nonmetallic. The external ring accurately centers gasket on flange face. Spiral wound gasket dimensions for use on screwed or slipon flanges see table 4. Sealing devices is an authorized flexitallic spiral wound gasket and metal gasket supplier in addition to being a flexitallic allied distributor.
The flexitallic spiral wound gasket is the precisionengineered solution for flanged joints, heat. Depend on its excellent compression resilience, it is suitable for sealing spots where the alteration of temperature and pressure are frequent. This profile is normally used in raised and flat faced flanged. Many spiral wound gaskets for critical applications include an inner guide ring also, which gives the gasket a greater resistance to thermal shock and in the case of vacuum service prevent the filler material being sucked in. Describes a spiral wound gasket with an outer ring, but no inner ring, i. Style ls gaskets have the inherent strength, resiliency and blowout resistance of spiral wound gaskets. Learn about spiral wound gasket including dimensions and. Spiral wound graphite gaskets will tolerate certain irregularities and flange or sealing face deformations more than most other gasket types. Ring type joints, camprofile gaskets, mrg gaskets, spiral wound gaskets, metallic rings, semimetallic corrugated flange gaskets. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i. You may encounter hybrid metal gaskets in the industry that are a cross between a spiral wound and kammprofile gasket. Download spiral wound gaskets dimension to asme b16. The spiral wound sealing element of a limct rwtype gasket consists of a thin metallic strip and a soft nonmetallic filler that are simultaneously wound on a rotating mandrel.
Unique construction provides stability and ensures troublefree handling and. Manhole or hanhole gasket specify shape style xr and xri spiralwound gaskets are manufactured in accordance with all relevant gasket standards per flange designations of asmeansi b16. Spiral wound gaskets swg general information and description the sealing element of the spiral wound gasket consists of a vshaped metal strip spirally wound in combination with a soft sealing material filler. Bolting calculation for asme code calculations gasket factor m value 3. This dimension table is the same as table 1,2 and 3 in jis b 24042006 gasket dimension for pipe flange. The vitaflex and flexseal spiralwound gaskets have passed the fire test according to specification api6fb. Gasket handbook 1st edition fluid sealing association.
Spiral wound gaskets first and foremost the concept of spiral wound gasket construction was originated by flexitallic in 1912, starting a new era in safe, effective sealing. Dimensions spiral wound gaskets according to en 15142 for. The gasket sealing element consists of a preformed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is. Spiral wound gaskets are constructed by winding together a metal often stainless steel and a filler often graphite. The filler acts as a seal, while the metal provides structural strength. The sealing core is a solid metal gasket with concentric serrations on both sealing surfaces and faced with soft material. Flexitallic style cg and cgi spiral wound gaskets can be. Maxiflex spiral wound gaskets combine the ease of sealing a graphite, ptfe or. Flexitallic is actually a manufacturer of spiral wound gaskets. The designdimensions of the gasket diameters are stipulated by the asme b16. Pdf nbt 470252012 english version, china standard, nb. Spiral wound gaskets swg general information and description the sealing element of the spiral wound gasket consists of a vshaped metal strip spirally wound in combination with a soft sealing. Spiral wound gaskets dimensions spiral wound gaskets for use with flanges din en 10921 metal industries has been a professionally managed manufacturing and exporters of r style ring joint gaskets oval, r style ring joint gaskets octagonal, rx style ring joint gaskets, bx style ring joint gaskets, materials ring joint gaskets, spiral wound gaskets. Spiral wound gaskets 10 according to en 15142 11 according to asme 16.
Also, ringjoint groove dimensions were not included, because they were included in asme ansi b16. Spiral wound gasket dimensions class 150 to class 2500. Spiral wound gasket cixi heroos sealing materials co. Read online spiral wound gaskets dimension to asme b16. Metal gaskets we offer a wide range of metal gaskets spiral wound gaskets. The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diam. Kammprofile gaskets consist of a sealing core metal with or without a guide ring.