In the upcoming api 682 4th edition, there will be a new simple methodology for selecting mechanical seals for specific applications. Extensive coverage of seal designs, arrangements, etc. The selection criteria for secondary containment seals must be a judgement on the. Chestertons api seals provide a versatile approach to refinery, chemical, and petrochemical sealing.
This standard is referenced normatively in api 610. Although the 1 st through 7 th editions includes specifications for mechanical seals, beginning with the 8 th edition, api 610 refers to api 682 for seal specifications. This involves connecting the complete seal to a tank of pressurised air, then measuring the pressure drop over five minutes to assess the leakage. The mechanical seal training program has dedicated modules to assist seal troubleshooting and seal selection api 682 guided seal selection procedure. Please ask also for our detailed brochure 58e, our api 682 seal selection software on cd or find your. Overview on api piping plans location and characteristics. As seal technology has advanced the standard has expanded to incorporate new seal design, materials, seal selection guidance and piping plans. Advancements in mechanical sealing api 682 fourth edition. This is intended to make the selection process easier and more effective by the user access to the industrys combined knowledge and experience. After nearly six years of intensive work, the american petroleum institute api 682 mechanical seal standard is soon to be adopted. Used for applications where products have high pressure and are. Soft, flexible, graphite gasket sheets ideal for pump, valve, and equipment gaskets. Api 682 4th edition this brochure provides basic information about api 682 4th edition.
To r e a l i z e these benefits, the seal man seal chambers, which are larger and offer an ufacturer, pump original equipment optimum environment for the seal. For example, the api 682 type a seal has reaction bonded silicon carbide mating ring, premium grade carbon primary ring, fluoroelastomer oring, hastelloy c springs, and 316ss hardware. Guided by api 682 swagelok seal support system designs avoid pipe threads and limit the number of connections wherever possible. Containment seals for api 682 second edition 69 segmented floating bushing segmenting the ring and utilizing a garter spring for retention can further reduce radial clearance between the shaft sleeve and the floating bushing figure 3.
The api 682 standard is permanently maintained and updated, by practical people namely users and manufacturers. This article contains excerpts from the paper, advancements in mechanical sealing api 682 fourth edition at the 20 international pump users symposium held at houston, texas. While thinnerwalled tubing, such as that used in general instrumentation installations, is often sufficient to handle the pressure and temperature of seal support systems, heavierwall tubing provides extra rigidity in highvibration service. Mechanical seals and supply systems in accordance with api. Published in 2014 the 4th edition of api 682 continues to promote proven sealing. Mechanical seal selection software that follows the guidelines as described in api 682 third edition. Mechanical seal piping plans webinar session 3 siewert. Api 682 dual seal design configurations pump industry. The standard was the result of the efforts of key rotating equipment engineers in the refinery industry. The purpose of api 682 is to assist in the selection and operation of end face mechanical seals in centrifugal pumps. Api682 seal selection software support for api682 seal. Api 682 is the leading document for mechanical seals in petrochemical, chemical, and pipeline services worldwide. I came to know that as per api 682 first edition default configuration for dual pressurized contacting wet seal was 3cwfb and for non contacting it was 3ncbb. Api 682 4th edition provides guidance in the form of flow charts.
Api 682 is a standard of the american petroleum institute. Api 682 4th edition application guide eagleburgmann. These definitions are carried over the previous editions. It contains a set of charts and summaries that give a brief overview and represent a stepbystep method to specify and select suitable eagleburgmann sealing systems. Based on the fourth edition, the standard design for each plan includes the minimum arrangement of components as detailed in api 682. Api 682 recommends specific wall thicknesses for 12 inch 12 mm to 1 inch 25 mm od tubing. Different types of pumps mechanical seal piping plans are detailed in api 682 or iso 21049 standards pump seal piping plans for single seals. Api 682 attempted to use a more comprehensive seal code.
The isc2 682 series is a family of balanced pusher and metal bellows seals designed to fully comply with the design and qualification requirements of api 682. In this video, an api 682 4th edition taskforce member gives an 8minute presentation explaining the improved method and how it can already be applied. The default or standard material of construction for a seal is completely defined in api 682. It has combined the aspects of seal design, testing, standardization, and applications to provide the users and oems alike with a common source of information for mechanical seals. Animated cutsections give a deep insight into mechanical seal operation and how mechanical seals work. Api682 seal selection software support for api682 seal selection software at joinlogin. Seal coding system according to api 682 4th edition. Platform flexibility allows application in a range of services throughout refineries, petrochemical plants and other industries where the api 682 specification is invoked.
Api plan 23 recirculation from a circulation device in the seal chamber through a cooler and back into the seal chamber. Although these flowcharts sheets 7, 8 and 9 of annex a appear to be somewhat imposing at first. The innovative design simplifies seal selection and improves standardization throughout the plant. Apd355 double mechanical cartridge seal meets api 682. Api 682 4th edition product range en eagleburgmann. Riskbased pump seal selection guideline complementing iso. It has combined the aspects of seal design, testing, standardization, and applications to provide the users and oems alike with a common source of. Industrial mechanical seal basics seal selection process. Api 682 category 1, type a, arrangement 2 or 3 seal. Api 682 cartridge single seal chesterton a182 single cassette.
These are standardized flushing piping arrangements that are widely used in the industry. Api 610 is primarily intended for use in the petroleum, natural gas and chemical industries. Pumpsshaft sealing systems for centrifugal and rotary pumps 1 scope this standard specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. Api 682 4th edition sealing competence eagleburgmann. Customer specific variants of these plans are possible. A classification system for the seal configurations covered by this standard into categories, types, arrangements, and orientations is provided.
Feb 01, 2017 mechanical seals and supply systems in accordance with api 682 4th ed. During the 1990s api 682 developed into a separate, more comprehensive standard for mechanical seals and supply systems. If you would like to have the course of your choice offered in a new location, submit this form, include your contact information. The api plans elaborated in this section are as defined by api 682 3rd edition api 610 10th edition. Api standard 682 pumpsshaft sealing systems for centrifugal and rotary. Most common types of pump seal piping plans for single seals are discussed in following paragraphs. Mechanical seal api 682 seal configuration selections pump. Pumps shaft sealing systems for centrifugal and rotary pumps api standard 682 is the standard about end face mechanical seals. Please ask also for our detailed brochure 58e, our api 682 seal selection software on cd or find your nearest contact at.
A circulation device b cooler c temperature indicator d vent e drain. The 4th edition code, described in annex d, is probably the best to date and includes some concepts and codes from the historical api 610 seal code. Common types of pumps mechanical seal piping plans single. Shaft seals at linkedin discussion started by sl abhyankar sla are there any software to help select seal type, seal moc, api plan for applicationparameters such as shaftsleeve size, rpm, boxpressure, liquidcharacteristics, solids if any, temp. Advancements in mechanical sealing api 682 fourth edition abstract api 682 iso 21049 is the leading document for mechanical seals in petrochemical, chemical, and pipeline services worldwide. Basics of api 682 mechanical seals 3 pdhs we can offer our courses in new locations, or customer prefered locations. Dec 20, 2017 seal types describe the basic design features of the seal. From expert consulting and engineering up to modular totalsealcare service solutions for entire plants eagleburgmann is your reliable partner for sealing technology. Initial information about mechanical seals was originally provided in the api 610 pump standard. Api 682 most common plans and sealing systems plan 53b plan 53c plan 52 used where the pumped product is harmful hazardous and or buffer fluid may not contaminate the product.
It is applicable to both new and retrofitted pumps and to pumps other than api 610 pumps e. The revised api 682 mechanical seal standard upstream pumping. Industrial mechanical seal basics seal selection process training. Dec 30, 2008 apd355 double mechanical cartridge seal meets api 682 standards scenic seals. Pumpsshaft sealing systems for centrifugal and rotary pumps. Since its introduction in 1994, api 682 has become the standard that sets the global tone for the procurement and operation of seal and supply systems for centrifugal pumps in the oil and gas sector as well as in the petrochemical industry. Oct 15, 2003 the american petroleum institute api published the first edition of its seal standard, api 682, in 1994. Please contact aesseal systems division for further details. Our product portfolio includes everything from mechanical seals and seal. Comparing arrangements and reconciling requirements. Before api 682, api 610 the pump standard used a simple seal code to specify seals. External reservoir at pressure below seal chamber pressure providing buffer liquid forced circulation. The american petroleum institute api has approximately 500 technical standards for processes and components. It differed from other equipment standards in several ways, most notably because it prescribed certain default designs and materials.