This table gives a list of many commonly used gasket materials and contact facings with suggested design values of m and y that have generally proved satisfactory in actual service when using effective. The vitaflex spiralwound gasket operates by the axial compression of the winding, which results in the plastic deformation of the filler material ptfe or cefigraf on the sealing faces. Acts as compression limiter preventing overloading and over compression of the spiral wound sealing element. Dimensions of spiral wound gaskets according to en 15142 for use with din flanges en. When flexitallic invented the spiral wound gasket in 1912, there was nothing like it.
A spiral wound gasket may be ordered in different shapes, such as oblong, rectangular, oval, pear and diamond. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive. For all filler materials, inner rings shall be furnished in spiral wound gaskets for. 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. The designdimensions of the gasket diameters are stipulated by the asme b16. Referring to the title failure analysis of pipe joint gaskets spiral wound, this gasket is suitable for use in piping systems spiral wound gasket designs are typically used in. 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. The spiral wound gasket outer centring ring provides the following benefits. The spiral wound gaskets are used to replace the plastic gaskets asbestos free or graphite when their limits of application are exceeded. The diameter of a spiral wound gasket may range between a few mm up to 5.
Trim the spiral pipe to the measured length and attach the sleeve. Gasket handbook 1st edition fluid sealing association. The design dimensions of the gasket diameters are stipulated by the asme b16. In this article we will discuss the spiral wound gasket basic characteristic and styles.
Prolonged trouble free service reduced seat cleaning time to order with all orders or inquiries please submit following. The section of the gasket that creates the seal between the flange faces is the spiral wound section, which houses the soft sealing element. Spiral wound gaskets are the most commonly used gaskets for raisedface flanges. Type swio spiral wound gasket with centring ring and inner ring. The bolts should be free of damage and lubricated with hightemperature resistant greases before mounting. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i. Ensure that a cut gasket is free from burrs or ridges at bolt holes and edges to. You may encounter hybrid metal gaskets in the industry that are a cross between a spiral wound and kammprofile gasket.
The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler. Acts as compression limiter preventing overloading and overcompression of the spiral wound element. Learn about the 5 key flange gaskets types used in the oil and gas industry. The standard thickness of the metallic strip is 0,2 mm. Apr 14, 2018 in this article we will discuss the spiral wound gasket basic characteristic and styles. 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. According to din en and asme normatives garlock is acknowledged as the global leader in highperformance fluid sealing products, committed to a culture of safety by making the world safer, sustainable and more reliable. This standard covers metal ringjoint gaskets, spiral wound gaskets, metaljacketed gaskets, and grooved metal gaskets with covering layers. 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. Describes a spiral wound gasket with an outer ring, but no inner ring, i. They are used in all pressure classes from asme class 150 to class 2500. Types of gaskets for flanges soft, spiral, ring joint. Spiral wound gaskets lewco specialty products, inc.
However, in some cases another thickness can be selected to obtain effective sealing. Flexitallic gasket broad term sometimes used to describe nearly any type of spiral wound gasket. Spiralwound gaskets open a further dimension for safe and effective sealing. Our standard production program comprises a range of spiral wound gaskets with inner diameters of 10 mm to 3000 mm and a nominal thickness of 3. Spiral wound gasket is usually produced with a thickness 4,8 mm. For gaskets with a diameter no superior to 1200 mm the thickness of 4,5 mm is recommended. The outer guide ring carbon steel helps center the gasket within the flange. These, and many more, can also be downloaded as pdf files of nonstandard dimensions and shapes, and larger diameters are available on request. This process of precise winding density control provides a gasket designed to meet your specified seating stress and. Dimensions spiral wound gaskets according to en 15142 for. The necessity to seal effective under high pressure and temperature variations, flange rotation and vibrations demands a gasket with adequate stress retention, flexibility and recovery. Klinger spiral wound gaskets pacline valves gaskets. Styles cg and cgi can be compressed to the ring thickness, if necessary. However, selecting the right gasket for a leakfree seal requires.
The installer applies a gasket on one flange, mates the two flanges together, and attaches the barrel clamp. Dimensions of spiral wound gaskets according to en 15142 for use with din flanges en 10921 dimensions spiral wound gaskets according to en 15142 for use with flanges din en 10921 explore the world of piping. 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. To read more about ring type joint gasket click here. Spiral wound gasket dimensions are in millimeters unless otherwise indicated. Gasket for flange connections with and without sealing strip. 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.
Table of dimensions and tolerances of spiral wound gaskets. Gaskets for pipe flanges which includes spiral wound gaskets and nonmetallic. 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. Ibc form ibc inner bolt circle, round seal without screw holes. The metal strips optimized profile provides elastic recovery, a vital function. When looking for a high pressure and high temperature gasket sprial wound gaskets are the industries standard. Inner ring recommended for all gaskets exceeding class ansi 600lbs.
We offer superior customer service and are committed to meeting the needs of all. Grafit is universally applicable, highquality, asbestosfree material with the following. The primary purpose for this development was the increasingly severe temperatures and pressures used. Spiral wound gaskets spiral wound gaskets open a further dimension for safe and effective sealing. Spiral wound gaskets swg selection of gasket thickness spiral wound gasket is standard produced with a thickness of 4,5mm. A general distinction can be made between two sealing geometries.
The style mcs gasket is an exclusive flexitallic design, consisting of a flexitallic spiral wound gasket with an integral solid metal inner ring. These gaskets can be used in flanges with larger surface roughnesses, but in this case the bolt loads should be increased so as to. One such design is a thick, extruded wire that is spiral wound and welded to look like a kammprofile. The vitaflex and flexseal spiralwound gasket concept can solve a. We manufacture spiral wound gaskets in sizes from dn.
There are no class 900 flanges in nps 50 and larger. Standard spiral pipe connector pipe to pipe connections are made by using a fitting size. Introducing the spiral wound gasket that reinvents the category. The metal strips optimized profile provides elastic recovery, a vital function in order to maintain sealing on a bolted assembly. Spiral wound gasket basic characteristic and styles. The spiral wound sealing element provides resilience, strength, blowout resistance and superior sealability. Flexitallic is actually a manufacturer of spiral wound gaskets. The usual nominal thickness of spiral wound gaskets are between 3,2 mm and 4,5 mm. For price price list of gaskets spiral wound gaskets pri. Online you can buy several products, such as from various top brands of india.
Spiral wound gasket dimensional table for flanges according to standard asme b16. Flexseal industrial is a full line gasket and oring distributor. Corrugated metal gasket cmg metal jacketed gaskets. Image shows a spiral wound gasket with inner and outer ring. View all products from flexitallic the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets on a global scale.
Although its basic fundamental principle has changed little since its creation, the production techniques and materials that have been developed. The change gasket design combines aspects of both a traditional spiral wound gasket and a kammprofile, improving upon both using. For gaskets with a diameter no superior to 1200 mm the thickness of 4,5 mm is. According to din en and asme normatives gasket dimensions general information this catalogue was created to identify gasket dimensions according to din en and asme normatives. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request. This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop.608 563 1305 1497 1067 693 1301 1278 612 1270 1188 841 342 750 1555 762 1536 336 535 786 156 261 779 330 23 44 852 1476 195