7550

7550

7550

Product catalog summary
Overview of the 7550 Seal
The 7550 model is a maintenance-free, self-adjusting rotary shaft seal designed for powder applications. It features a solid elastomer made from FDA-approved silicone, capable of withstanding temperatures up to 400°F. The elastomer is molded slightly smaller than the shaft to create an interference fit, which seals the shaft and prevents material migration.

Design and Functionality
The seal's design includes PTFE mineral-filled rotor cups that rotate with the shaft, compressing against stationary stator plates to form the primary seal. This dynamic seal is air-purged at 5 to 8 PSI above vessel pressure to maintain a positive seal and extend seal life by creating an air barrier, cooling the rotating faces, and enhancing the closing force.

Specifications
  • Temperature range: -50°F to 400°F
  • Compatible with C.E.M.A. screw conveyor and bulk handling equipment
  • Accommodates linear shaft growth and 1/4” total radial shaft runout
  • Machined from anodized aluminum
  • Zero maintenance due to self-adjusting design

Installation and Maintenance
Before installation, ensure the shaft is clean and free of wear, dirt, oils, or grease. Use mild soapy water or P-80 Rubber Lubricant Emulsion for lubrication. The housing must be perpendicular to the shaft, with alignment not exceeding 2°. Each seal requires a dedicated airline for purging, and the maximum operating temperature should not exceed 400°F.

Accessories and Repair
Available accessories include seal repair kits, air pressure regulators, and automatic greasers. The repair kit consists of a new elastomer and PTFE rotor cups, which can be replaced in minutes.
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Catalog excerpts

7550-1

Solids Solutions for Sealings Technology 7550 Model Maintenance Free & Self-Adjusting Seal Click Here to Request A Quote The key component of the 7500 rotary shaft seal design is the solid elastomer, which is made from FDA approved silicone and can handle temperatures up to 400F degrees. The 7550 model is more suitable most powder applications. The elastomer is molded slightly smaller than the shaft size so that an interference fit is achieved. It is this tight fit that seals the shaft, which stops material from migrating past, and drives the two rotating faces called “rotor cups”. The rotating rotor cups compressed against the two stationary stator plates is what creates the primary seal that stops product leakage. These dynamic seals are also air purged at 5 to 7 PSI above any pressure in the vessel to assist in maintaining a positive seal. Designed for C.E.M.A. screw conveyor and bulk handling equipment The housing is machined out of Anodized Aluminum Designed to handle linear shaft growth, and 1/4” total radial shaft runout Bolting pattern will accommodate flange mounted bearings Purge with air, 5 to 8 psi above vessel pressure, or silicone grease Zero maintenance due to unique self adjusting design

 Open the catalog to page 1
7550-2

Functionality The key component of the 7500 rotary shaft seal design is the solid elastomer, which is made from FDA approved silicone and can handle temperatures up to 400F degrees. The elastomer is molded slightly smaller than the shaft size so that an interference fit is achieved. It is the interference fit of the elastomer and shaft that not only seals the shaft so the product can’t migrate past and leak out, but it also causes the internal seal parts to turn with the shaft so that damage to the shaft is eliminated. As the elastomer turns with the shaft, it drives a pair of PTFE mineral-filled...

 Open the catalog to page 2
7550-3

Solids Solutions for Sealings Technology 7550 Seal Installation If you have any questions before you begin your installation please call 1-856-662-5162 Shaft should be totally clean of any wear, dirt, oils or grease before installing the seal. Carefully remove seal from shaft. *Use mild soapy water for lubrication or P-80 Rubber Lubricant Emulsion. Contact Us Watch Our Installation Video Installing the 7550 Seal 1. Housing must be perpendicular - normal to the shaft 2. Alignment of housing to shaft cannot exceed 2° 3. Check and make sure the O-ring at the inboard is seated 4. Check for equal...

 Open the catalog to page 3

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.