Class 900 nps 24 to 48 class 1500 nps 12 to nps 24 class 2500 nps 4 to nps 12. Apr 14, 2018 the spiral wound design is most popular because it makes a good all round gasket. 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. The change gasket design combines aspects of both a traditional spiral wound gasket and a kammprofile, improving upon both using. 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. The inner ring provides a positive stop preventing the gasket from over compression and possible damages. The gasket in a bolted flange connection is but one essential component in that complex mechanical device that enables lowleakage service. This table shows the maximum bore of flanges for which the spiralwound gasket dimensions. Spiral wound gasket dimensions class 150 to class 2500. Spiral wound gasket basic characteristic and styles. 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.
During the inspection of spiral wound gasket dimensions, you should check for. Besides the multiple sealing actions of the metal edges, the filler compresses under the bolt load to make another barrier against leakage. Special gaskets have been designed for valves, pumps, compressors, turbines, boilers, heat exchangers, etc. It is normally made of the same material as the gasket metallic strip. 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. Hastelloy c276uns n10276 platessheets for fgd system.
Cgrj and cgirj spiral wound gaskets are designed for use, as a replacement maintenance item, of standard oval and octagonal ring joint gaskets. 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. Flexitallic spiral wound gasket design and construction to cover a wide range of applications in installations for which there are no industrywide standards. Gasket handbook 1 edition fluid sealing association. However, in some cases another thickness can be selected to obtain effective sealing. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive. Introducing the spiral wound gasket that reinvents the category.
Spiral wound gasket types ordering information when ordering spiral wound gaskets please specify the following. Inward buckling of spiral wound gaskets has been identified as a potential problem. Lg14 this gasket is a windings only as in the lg11 but are. When flexitallic invented the spiral wound gasket in 1912, there was nothing like it. Spiral wound gaskets spiral wounds are available in a fill range of styles and material and are manufactured in accordance with asme b16. Flexitallic spiralwound gaskets goodyear rubber products, inc. When ordering please specify example gasket style nominal pipe size nps pressure rating gasket standard winding materials outer ring material inner ring material flexitallic style cgi spiral wound gasket 4 class 900 asme b16. Dimensions of spiral wound gaskets class 150, asme b16. The fillers available for spiral wound gaskets include graphite, ptfe, non asbestos, and ceramic. 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 10 according to en 15142 11 according to asme 16. Learn about spiral wound gasket including dimensions and. Table of dimensions and tolerances of spiral wound gaskets. The primary purpose for this development was the increasingly severe temperatures and pressures used.
Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on 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. This limitations are general and can vary according to the. Spiral wound gaskets flexitallic pdf catalogs technical. Custom filler, winding strip, guide ring and inner ring materials are available upon request. There are no class 900 flanges in nps 50 and larger. Tolerance outside diameter for nps 12 through nps 8 is 0. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints. Spiral wound gaskets shall be fitted with an inner metal ring i. Low emission the flexitallic low emission gasket is a high performance spiral wound gasket that has been specially engineered to exceed stringent oil and gas industry fugitive emissions flexitallif, such as those found in the chevron fugitive emissions. These gaskets are available for nps 12 to 24 and pressure classes 150 to 1500.
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. We manufacture spiral wound gaskets in sizes from dn. This limitations are general and can vary according to the special customer requirements. Style rir spiral wound gaskets are manufactured to 0. Image shows a spiral wound gasket with inner and outer ring. 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. The vitaflex and flexseal spiralwound gasket concept can solve a large variety of. Characteristics the spiral wound gasket is suitable for use across a wide pressure range and is therefore virtually applicable. Consult with flexitallic engineers as early in the design stage as possible. The designdimensions of the gasket diameters are stipulated by the asme b16. According to din en and asme normatives gaskets form ibc raisedface and flatface flanges ordering example for an ibc gasket according to en 15141. Dimensions are in millimeters unless otherwise indicated.
The primary purpose for this development was the increasingly severe temperatures and pressures used by u. Solid outer ring accurately locates the gasket on the flange face to give the additional radial. Spiral wound gaskets marked with are for use in male and female flanges. Gasket dimensions according to din en and asme normatives.
Standard spiral wound gasket sunwellsw600 products are manufactured in accordance with all relevant gasket standards. Spiral wound gasket dimension to en 15142 din 2690 used with en 1092 flanges spiral wound gasket dimension to asme b16. All types of spiral wound gaskets can be manufactured, cg, cgi, r, rir, etc. Technical catalogue spiral wound gaskets comdiflex. The spiral wound gasket can be used to seal fluid pressures up to 250 bar and. Material combinations for all operating conditions. 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. 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. Spiral wound gaskets are available for classes 150 to 2500.
Style rir spiral wound gaskets are designed to prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion of flange faces. 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. Published as an indication of which flexitallic spiral wound gasket best. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. Spiral wound gaskets flexitallic metal gaskets we are accepting orders and receiving calls. Spiral wound gasket inwards buckling 119 figure 54.