Dimensions of spiral wound gaskets class 150, asme b16. Spiral wound gasket basic characteristic and styles. Gasket standard gasket style nominal pipe size and pressure rating or specific gasket dimensions if other than standard winding and filler materials outer or centering ring andor inner ring material. This limitations are general and can vary according to the special customer requirements. Standard spiral wound gasket sunwellsw600 products are manufactured in accordance with all relevant gasket standards. There are no class 900 flanges in nps 50 and larger. Flexitallic spiral wound gasket design and construction to cover a wide range of applications in installations for which there are no industrywide standards. Technical catalogue spiral wound gaskets comdiflex. To provide a compression stop the depth of the tongue, groove or recess is controlled to provide optimum compressed gasket thickness with metal to metal contact at the flange faces see page 25, table 16. When flexitallic invented the spiral wound gasket in 1912, there was nothing like it. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive.
Spiral wound gaskets swg selection of gasket thickness spiral wound gasket is standard produced with a thickness of 4,5mm. Applicability of hastelloy c276uns n10276 plate in asme code. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. Lg14 this gasket is a windings only as in the lg11 but are. Apr 14, 2018 the spiral wound design is most popular because it makes a good all round gasket. Tolerance outside diameter for nps 12 through nps 8 is 0. It is normally made of the same material as the gasket metallic strip. 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. Besides the multiple sealing actions of the metal edges, the filler compresses under the bolt load to make another barrier against leakage. This limitations are general and can vary according to the. 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. However, in some cases another thickness can be selected to obtain effective sealing. The vitaflex and flexseal spiralwound gasket concept can solve a large variety of. We manufacture spiral wound gaskets in sizes from dn.
Spiral wound gaskets spiral wounds are available in a fill range of styles and material and are manufactured in accordance with asme b16. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request. Introduction first and foremost the concept of spiral wound gasket construction was originated by flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. Spiral wound gaskets marked with are for use in male and female flanges. These gaskets are available for nps 12 to 24 and pressure classes 150 to 1500. Spiral wound gasket dimension to en 15142 din 2690 used with en 1092 flanges spiral wound gasket dimension to asme b16. Table of dimensions and tolerances of spiral wound gaskets. Consult with flexitallic engineers as early in the design stage as possible. 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. Class 900 nps 24 to 48 class 1500 nps 12 to nps 24 class 2500 nps 4 to nps 12. Introducing the spiral wound gasket that reinvents the category.
Gasket dimensions according to din en and asme normatives. This table shows the maximum bore of flanges for which the spiralwound gasket dimensions. 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. Special gaskets have been designed for valves, pumps, compressors, turbines, boilers, heat exchangers, etc. According to din en and asme normatives gaskets form ibc raisedface and flatface flanges ordering example for an ibc gasket according to en 15141. The inner ring provides a positive stop preventing the gasket from over compression and possible damages. The primary purpose for this development was the increasingly severe temperatures and pressures used. The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler.
Custom filler, winding strip, guide ring and inner ring materials are available upon request. 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. Dimensions are in millimeters unless otherwise indicated. Gasket handbook 1 edition fluid sealing association. The gasket in a bolted flange connection is but one essential component in that complex mechanical device that enables lowleakage service. The primary purpose for this development was the increasingly severe temperatures and pressures used by u. Spiral wound gaskets flexitallic pdf catalogs technical. Published as an indication of which flexitallic spiral wound gasket best. Cgrj and cgirj spiral wound gaskets are designed for use, as a replacement maintenance item, of standard oval and octagonal ring joint gaskets. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints.
The fillers available for spiral wound gaskets include graphite, ptfe, non asbestos, and ceramic. Hastelloy c276uns n10276 platessheets for fgd system. The spiral wound design is most popular because it makes a good all round gasket. It can adjust for temperature changes, shock, and vibration, and can be used at fairly high temperatures and pressures. Deformation of contact planes with the gasket admissible stresses in the flange and bolts the behavior of the vitaflex spiralwound gasket is subject to different loads. Solid outer ring accurately locates the gasket on the flange face to give the additional radial. Style rir spiral wound gaskets are manufactured to 0. Spiral wound gaskets are available for classes 150 to 2500. Spiral wound gasket types ordering information when ordering spiral wound gaskets please specify the following. All types of spiral wound gaskets can be manufactured, cg, cgi, r, rir, etc. Flexitallic spiralwound gaskets goodyear rubber products, inc.
Spiral wound gaskets shall be fitted with an inner metal ring i. The change gasket design combines aspects of both a traditional spiral wound gasket and a kammprofile, improving upon both using. Style rir spiral wound gaskets are designed to prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion of flange faces. Characteristics the spiral wound gasket is suitable for use across a wide pressure range and is therefore virtually applicable. Spiral wound gasket dimensions class 150 to class 2500. Material combinations for all operating conditions. Image shows a spiral wound gasket with inner and outer ring. Inward buckling of spiral wound gaskets has been identified as a potential problem. The designdimensions of the gasket diameters are stipulated by the asme b16. The spiral wound gasket can be used to seal fluid pressures up to 250 bar and.
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