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TYPE EZ-1®

TYPE EZ-1®
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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification – Insert – Mating Ring – O-ring – Metal Bellows – Sleeve – O-ring – Centering Bushing H – Gland Packing I – Sleeve Collar J – Snap Ring A B C D E F G Welded Metal Bellows Product Description Performance Capabilities • Standard product for general-purpose applications. • Target markets are chemicals, pulp and paper, waste-water, food processing, and power generation. • Pressure: vacuum to 300 psig / 20 bar g • Speed: up to 25 m/s / 4500 fpm • Available with a hard-face combination for abrasive applications. • End play/axial float allowance 0.13 mm/0.005" F.I.M. max. • Alloy C-276 (UNS N10276) is an optional bellows metallurgy (upon special request). • Shaft runout: 0.001" per inch / 0.001 mm per mm of shaft diameter F.I.M. max. Design Features • Compact and easy to install • Only one moving part - the bellows • Eliminates O-ring “hang-up” problems • Self-cleaning bellows design

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification Type EZ-1 Typical Arrangement

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification Pressure Ratings Pressure (bar g) Pressure (psig) To determine the maximum operating pressure for the size of the Type EZ-1 seal required, multiply the maximum pressure indicated on the graph above by the factors in the chart below. Consult John Crane for applications outside of these limits. Seal Size Multiplier Factors Selection Considerations Multiplier Factor Carbon vs. SiC SiC vs. SiC Example for Determining Dynamic Pressure Rating: Seal: 50mm/2" Type EZ-1 Between 400 and 3600 rpm Below 400 or above 3600 rpm...

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification Materials of Construction SEAL COMPONENTS Sealide (Sintered Silicon Carbide) Mating Ring Sealide (Sintered Silicon Carbide) Sleeve Collar Centering Bushing Snap Ring 416 Stainless Steel (Hardened) Hardened Steel* Mating Ring O-ring PTFE-Encapsulated Fluorocarbon Sleeve O-ring Fluorocarbon (Installed) AFLAS®, EPR, PTFE-Encapsulated Fluorocarbon** Gland Gasket Glass-Filled PTFE Notes: * Hardened steel set screws provided with seal. 416 stainless steel screws are installed at the factory. ** These O-rings are provided with...

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification Piping Plans The Type EZ-1 bellows cartridge seal provides a means of recirculating the product, flushing, or removing air from the seal chamber to extend seal life. The most popular piping plans are shown below for your reference. ANSI Plan 7311 (API Plan 11) This plan requires installation of a recirculation line from the pump case discharge through an orifice to the gland flush connection. The primary purpose of this plan is to dissipate heat generated at the seal faces and/or build seal chamber pressure. ANSI Plan...

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification

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TYPE EZ-1® CARTRIDGE-MOUNTED METAL BELLOWS SEAL Technical Specification

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AFLAS is a registered trademark of Asahi Glass Co. LTD. North America Europe Latin America Middle East & Africa Asia Pacific United States of America United Kingdom Brazil United Arab Emirates Singapore 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 and use. In the interest of continuous development, John Crane Companies reserve the right to alter designs and specifications without prior notice. It is dangerous to smoke while handling products made from PTFE. Old and new...

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