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TYPE 1/1B
6Pages

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Catalog excerpts

TYPE 1/1B - 1

TYPE 1/1B Elastomer Bellows Seals – Face/Primary Ring – Spring – Elastomer Bellows – Retainer – Drive Band – Spring Holder – Disc Product Description The John Crane Type 1 Elastomer Bellows Seal is widely recognized as the industry workhorse with a proven track record of exceptional performance. The Type 1 is suitable for a wide range of service conditions: from water and steam to chemicals and corrosive materials. ■ For use in pumps, mixers, blenders, agitators, refrigeration compressors, blowers, fans and other rotary shaft equipment. For pulp and paper, petrochemical, food processing, wastewater treatment, chemical processing, power generation and other demanding applications. Mechanical Drive — Eliminates overstressing of bellows. Self-Aligning Capability — Automatic adjustment compensates for abnormal shaft end play runout, primary ring wear and equipment tolerances. Special Balancing — For higher pressure applications and less wear. Non-Clogging, Single-Coil Spring — Not affected by buildup of solids. Low Drive Torque — Improves performance and reliability. Temperature: -40°C to 205°C/-40°F to 400°F (depending on materials used) Pressure: 1: Up to 29 bar g/425 psig 1B: Up to 82 bar g/1200 psig Speed: See enclosed Speed Limits chart.

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TYPE 1/1B - 2

TYPE 1/1B Elastomer Bellows Seals Type 1 Typical Arrangement/Dimensional Data SPRING ADAPTER OPTION For ease of installation, the lead-in edge of shaft or sleeve should be chamfered as shown. 0.125" SET SCREW COLLAR OPTION 20°

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TYPE 1/1B - 3

TYPE 1/1B Elastomer Bellows Seals Type 1B Typical Arrangement/Dimensional Data L3 ±0.031" 20° For ease of installation, the lead-in edge of shaft or sleeve should be chamfered as shown.

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TYPE 1/1B - 4

TYPE 1/1B Elastomer Bellows Seals Basic Pressure Rating Pressure (bar g) 85 Pressure (psig) 1200 Contact John Crane Engineering 1000 Type 1B Carbon vs. Silicon Carbide Type 1B Carbon vs. Ceramic Type 1 Carbon vs. Silicon Carbide To determine the maximum pressure for the Type 1 or 1B required, multiply the maximum pressure by the Multiplier Factors to obtain the maximum operating pressure. 14 Type 1 Carbon vs. Ceramic Seal Size The Basic Pressure Rating is based on a standard Type 1 or Type 1B seal installed according to the criteria given in this data sheet and according to generally...

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TYPE 1/1B - 5

TYPE 1/1B Elastomer Bellows Seals Breakout (Starting) Torque Consumption for Seal For Starting Torque Power Consumption, consult John Crane Engineering. Hydrostatic Pressure Limits Pressure (bar g) Pressure (psig) 2000 TYPE 1B Seal Size Speed Limits for Coil Springs Speed (rpm) 6000 Welded End Coil Spring Stationary Seal Head Coil spring requirements for rotating Type 1 and 1B seal heads with standard stuffing box diameter. Welded End Coil Spring and Adapter Welded End Coil Spring Criteria for Installation Shaft/Sleeve Surface Finish Ovality/Out of Roundness (Shaft) End Play/Axial Float...

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TYPE 1/1B - 6

TYPE 1/1B Elastomer Bellows Seals Materials of Construction SEAL COMPONENTS Face/Primary Ring Antimony-Impregnated Carbon Tungsten Carbide Silicon Carbide Retainer Disc Drive Band Spring Holder Monel® Alloy 20 CB-3 SS 316 Stainless Steel Aflas® Fluoroelastomer Ethylene Propylene Neoprene® (Chloroprene) Monel Alloy 20 CB-3 SS 316 Stainless Steel Aflas is a registered trademark of Asahi Glass Co., Ltd. Monel is a registered trademark of Inco Alloys International, Inc. Neoprene is a registered trademark of DuPont. Application Criteria Type 1/1B elastomer bellows seals can be customized for...

Open the catalog to page 6

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