Category I

Type A and B

Arrangement 1, 2, and 3

Qualification Tested

High Performance API 682 Sealsfor the Chemical Processing Industry

End User Driven Seal Specification StandardAPI-682 is a stand alone seal standard for centrifugal and rotary pumps used in the petroleum refining and chemicalprocess industries. The standard was written by a select committee comprised of end users, pump manufacturersand seal manufacturers including recognized seal industry experts from John Crane.

In keeping with the standards stated purpose, API-682 strives to promote best practices in the selection and operation of mechanical seals so as to extend seal life to a minimum of three years of service. Building upongrowing acceptance of the first edition standard in the user community, the scope of the standard, second edition, has been expanded beyond Oil & Gas API 610 pumps to also include large bore ANSIand ISO chemical duty process pumps. The new 682 2nd Edition standard replaces the long standingmechanical seals specification found in the API-610 pump standard and establishes a new seal standard for ANSIand ISO chemical process pumps.

Your Complete Source for API 682 Seal RequirementsAs the world leader in Chemical and Petrochemical process sealing, John Crane supplies qualification testedmechanical seals in accordance with the API 682 2nd Edition Standard. These seals are the preferred choice forsafe, reliable, single and dual seal arrangements specifically engineered for dependable sealing of light hydrocar-bons, caustics, water, hot oil and other volatile organic compounds. Evolving from John Crane's extensive line ofperformance proven API 682 1st Edition seals, the 2nd Edition covers an expanded range of applications andequipment specific to the Chemical Processing Industry. API-682 Category I establishes the first international seal standard for ANSI and ISO enlarged bore pumps including wet contacting seals, dry-running secondary-containment seals and non-contacting gas-lubricated seal designs.

API-682 has established three distinct seal categories summarized below:

Standard Seal Types and ArrangementsThe API-682 seal selection procedure provides a recommended seal type, arrangement and flush plan for typicalchemical plant or refinery services. Within each of the three categories, API defines three primary seal types andarrangements.

Type A: Rotating pusher seal using o-rings and multiple springs Arrangement 1: Single seal

Type B: Rotating metal bellows using o-rings Arrangement 2: Unpressurized dual (Tandem)

Type C: High Temperature metal bellows using flexible graphite Arrangement 3: Pressurized dual (Double)gaskets. (only applies to Cat. II & III for high temperature services)

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Category I: Chemical and Petrochemical Industry Pumps.Heavy duty seals designed for ANSI and ISO enlarged bore seal chambers.

Category II: Oil & Gas Industry API Pumps.Seals designed to handle those services previ-ously defined as API-610 applications. Seals

contain the same qualification tested compo-nents and arrangements as the premium

Category III API-682 cartridge seals.

Category III: Oil & Gas Industry API Pumps.Premium seals meeting the highest specification

of API 682 design criteria and requiring full qualifi-cation test reports. These premium products con-

tain the optimum in seal features and design.

API 6822nd Edition

Maximum Operating Limits For Category I Type A & B Contacting Wet Seals

Performance Capability Type A Seals: 5610Q-1/5620P-1 Type B Seals: 5615Q-1/5625P-1

Temperature -30°C to 250°C/-20°F to 400°F -30°C to 260°C/-20°F to 500°F

Pressure Up to 21 bar g/300 psig Up to 21 bar g/300 psig

Speed Up to 25 m/s/5000 fpm Up to 25 m/s/5000 fpm

*Consult John Crane for higher speed and pressure applications

API 682 Design CriteriaJohn Crane API 682 mechanical seals are designed inaccordance with API 682 2nd Edition design require-ments. A sampling of design features include:

• Premium materials of construction that fullycomply with API 682 design standards.

• Inside mounted, balanced, cartridge seal.• Rotating flexible elements for Type A and

Type B.• One piece sleeve relieved along inside bore with

minimum sleeve thickness of 2.5 mm (0.100"). • All Arrangement I seals furnished with a fixed

bushing.• Dual seals have standard radial inlet and tan-

gential outlet buffer/barrier fluid connections.• Glands have a registered fit, confined O-ring, and metal-to-metal contact with pump seal chamber. • Fits ASME B73.1, ASME B73.2 and ISO 3069 Type C seal chambers.• Arrangement 3 seals are double (reverse) balanced to withstand pressure reversal.• Inner seal capable of handling 2.75 bar g (40 psig) ID dynamic pressure.• Common adaptive hardware between types and arrangments.• Primary rings are a premium grade, blister resistant

carbon.• Mating rings are a homogenous self-sintered silicon

carbide.

Fluid Control SystemsJohn Crane is your complete source for liquid or gas sealsupport systems for rotating mechanical equipment.Products include reservoir systems, heat exchangers, abra-sive separators, gas control panels, lubricators and API682 support systems.

John Crane can provide you with the right piping planand sealing system that meet the requirements of API682. John Crane auxiliary piping systems comply with API682 Table 4 Group I (mechanical seal flush/cooling sys-tems), Group II (quench systems), and Group III (cooling-water systems).

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Test rig in John Crane’s Technology Testing Center

API 682 Seal Support System

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Seal Selection SoftwareYou can select and specify your API seal, flush and arrangements criteria using John Crane’s unique API seal selec-tion software, CSelect682. The software will run on a Windows® format and allows seal selection by category, pro-duction of API data sheets, dedicated reports, drawings and piping plans, and a host of useful basic formula andcalculations. For your copy contact your local John Crane representative.

ANSI / ISO Process PumpsAPI-682 Category I seals are intended for specification to pumps with seal chambers conforming to the ASMEB73.1, B73.2 or ISO 3069 Type C standard.

API Standard 682 gives comprehensive seal selection guidance. Every effort has been made to ensure that this program accurately reflectsthe recommendations outlined in API Standard 682. Neither John Crane nor its representative is responsible for any problems arising fromusing this software in connection with the seal selection process.

John Crane recommends confirming the selection with the seal supplier. In accordance with its general policy, the American PetroleumInstitute has not endorsed nor recommended this computer program, John Crane products or any other manufacturer’s products.

John Crane strongly recommends the user/specifier purchase his/her own copy of the entire Standard for reference in conjunction with theuse of this computer program. Original copies of API Standard 682 are available from the American Petroleum Institute, 1220 L Street, NW,Washington, D.C. 20005.

Type A Category I Contacting Wet Seals John Crane API 682 Cat. I Type A seals are based on the Universal CartridgeTM Seal Type 5610Q and 5620Pdesigns. These industry proven standard cartridge mechanical seals have been enhanced specifically to meet APIdesign requirements in order to attain Maximum Achievable Control Technology compliance in hydrocarbons andother Volatile Organic Compounds (VOCs) and promote extended seal life.

Type 5610Q-1 Type 5620P-1

Register fit gland plate with confined o-rings

and metal-to-metal contact with pump seal chamber Bushing

Reverse pressure balanced

Pumping ring

Windows is a registered trademark of Microsoft Corporation.

Category I Contacting Wet SealsArrangement Type A Type B

1 5610Q-1 5615Q-1

2 5620P-1 5625P-1

3 5620P-1 5625P-1

Type A Contacting Wet SealsType 5610Q-1: Single pusher cartridge seal Type A, Arrangement 1. It can be applied to non-hydrocarbon, non-flashing hydrocarbon, and flashing hydrocarbon services. This seal comes standard with single point flush andfixed clearance carbon throttle bushing.

Type 5620P-1: Dual unpressurized pusher cartridge seal Type A, Arrangement 2. This seal provides additionalsafety for hazardous applications and those where the sealing environment needs to be controlled. The outer sealprovides additional containment in conjunction with an API Flush Plan 52.

Type 5620P-1: Dual pressurized pusher cartridge seal Type A, Arrangement 3. Designed for maximum contain-ment of hazardous fluids and light hydrocarbons. The inner seal is double balanced to provide a positive seal withpressure from either direction. The outer seal retains the barrier fluid using either an API Flush Plan 53 or 54. Theseal configuration is the same as the dual unpressurized version above.

Type B Contacting Wet SealsType 5615Q-1: Single rotating Alloy C-276 (UNS N10276) metal bellows cartridge seal Type B, Arrangement 1.For low temperature applications, this seal is applied to non-flashing hydrocarbon and non-hydrocarbon applica-tions. This seal comes standard with a single point flush and fixed clearance carbon throttle bushing.

Type 5625P-1: Dual unpressurized metal bellows cartridge seal Type B, Arrangement 2. This seal is used in conjunction with an API Flush Plan 52.

Type 5625P-1: Dual pressurized metal bellows cartridge seal Type B, Arrangement 3. Low temperature seal forhazardous fluids and utilizes an API Flush Plan 53 or 54. The seal configuration is the same as the dual unpressur-ized version above.

Type 5615Q-1

Sealol® edge-welded metal bellows

Type 5625P-1

Dual seals have standard radial inlet and tangential outlet buffer/barrier fluid connections

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Dry-Running Secondary-Containment Category I SealsThe 5620D-1 seal design satisfies Category I secondary-containment seal specifications. The 5620D-1 is an effective solution to meeting emission requirements while eliminating the need for liquid barrier systems.Secondary-containment seals will contain any nominal leakage from the primary seal and act as a back up capableof full process pressure containment providing an additional level of safety during process or system upsets.

Category I Secondary-Containment SealsArrangement Type A Type B

2 5620D-1 5625D-1

Type 5620D-1: Dual pusher contacting dry-running secondary-containment seal Type A, Arrangement 2.Utilizes a special multiple spring outer secondary-containment seal.

Type 5625D-1: Dual low temperature metal bellows primary seal Type B, Arrangement 2 utilizing the pusher secondary-containment seal as standard. The Sealol® ECSTM (Emission Containment Seal) is optional.

Maximum Operating Limits Contacting Dry Secondary-Containment Seals

Performance Capability Type 5620D-1 and 5625D-1

Temperature -30˚ C to 205˚ C / -20˚ F to 400˚ F

Pressure • Dry: 0.7 bar g / 10 psig continuous

• Wet: 10.5 bar g / 150 psig*

Speed Up to 20 m/s / 4000 fpm

* Maximum containment pressure rating under dynamic conditions dependent upon process fluid properties.Shut down upon high-pressure alarm activation is recommended.

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Non-contacting Gas-lubricated Seals Category IIn 1994 John Crane revolutionized zero emission sealing with the development and patent of the first non-contacting gas-lubricated mechanical seal for chemical duty process pumps, the Type 2800. The Type 2800and Type 2800MB comprise the John Crane Category I API 682 Second Edition non-contacting gas-lubricated sealproduct line. As the world leader in gas seal technology and experience John Crane has amassed over 70 millionoperating hours of reliable zero emission operation on pumps worldwide.

These seals represent the state of the art advanced dry-running, non-contacting sealing technology for process pumpapplications. Zero emissions, high performance, extended seal life, reduced power consumption, and wet seal system elimination are achieved. Per Arrangement 3, the Type 2800 and Type 2800MB operate using an available pressurized inert barrier gas source to positively seal hazardous process fluids with zero emissions to the atmosphere.

Arrangement Type A Type B

3 2800 2800MB

Maximum Operating Limits Non-contacting, Gas-lubricated SealsPerformance Capability Type 2800 Type 2800MB

Temperature -40˚ C to 260˚ C / -40˚ F to 500˚ F -40˚ C to 260˚ C / -40˚ F to 500˚ F

Pressure to 21 bar g /300 psig to 16 bar g /230 psig

Speed 1450 RPM Min. 1450 RPM Min.

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Type 2800 Type 2800MB

Spiral Groove

Sealing DamArea

Patented spiral groove technology offers superiorstable operating perform-ance due to its maximizedfilm stiffness characteristics.

Category II & III Seals for API-610 PumpsAPI-682 Category II or III seals are intended for specification to pumps conforming to the API-610 pump standard.The vast majority of process plant services that were previously defined "API-610 seals" will generally now bespecified as API-682 Category II seals. This provides for flexibility in flush arrangement and bushing selection thatis otherwise fixed in Category III.

Type A Category II & III Contacting Wet Seals John Crane API 682 Type A seals are based on the successful, proven, Type 48 design. These dependable, engi-neered mechanical seals were developed specifically to attain Maximum Achievable Control Technology compli-ance in hydrocarbons and other Volatile Organic Compounds (VOC).

Category II seals are designed to handle “general purpose” API (American Petroleum Institute) applications and con-tain the same qualification tested components and arrangements as the premium Category III API cartridge seals.

Category II, Arrangement 1 seals are available with a variety of bushing and flush configurations providing youwith more flexibility in your API seal selection. Pick the arrangement best suited for you particular application. Youcan specify a Category II, Arrangement I seal to include all of the features of a Category III seal without therequirement of documentation to accompany the seal.

Category IIArrangement Type A Type B Type C

1 1648-2 1670-2 1604-2

2 2648-2 2670-2 2609-2

3 3648-2 3670-2 3609-2

Category IIIArrangement Type A Type B Type C

1 1648-3 1670-3 1604-3

2 2648-3 2670-3 2609-3

3 3648-3 3670-3 3609-3

Type B and Type C Category II & III Contacting Wet SealsThese fully qualified API 682 Type B and Type C seals feature Sealol® edge welded metal bellows seals. The low-tem-perature and high-temperature bellows seals are utilized in a variety of hydrocarbon services. The Types 1604, 2609,and 3609, with flexible graphite packings are ideal for demanding high temperature applications. The Type 1670,2670, and 3670 with Alloy C-276 rotating bellows seal provides high strength and excellent corrosion resistance.

As with Cat. I, in addition to the Type A and B contacting wet seals, Cat. II & III also include dry-running secondary-containment seals and non-contacting gas-lubricated seals.

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EuropeSlough, UK

Tel: 44-1753-224000Fax: 44-1753-224224

North AmericaMorton Grove, Illinois USA

1-800-SEALINGTel: 1-847-967-2400Fax: 1-847-967-3915

Latin AmericaSão Paulo, Brazil

Tel: 55-11-3371-2500Fax: 55-11-3371-2599

Middle East, Africa, AsiaDubai, United Arab Emirates

Tel: 971-4-3438940Fax: 971-4-3438970

For your nearest John Crane facility, please contact one of the locations above.

If the products featured will be used in a potentially dangerous and/or hazardous process, your John Crane representative should be consulted prior to their selection anduse. In the interest of continuous development, John Crane Companies reserve the right to alter designs and specifications without prior notice. It is dangerous to smokewhile handling products made from PTFE. Old and new PTFE products must not be incinerated.

©2002 John Crane Inc. Print 11/02 www.johncrane.com ISO-Certified QS 9000 B-API-682_Chemical