Rotary Shaft Seals by CinchSeal

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4 Ways PTFE Rotary Shaft Seals Improve Cheese Processing


With demand on the rise, the global cheese ingredients market has surpassed $100 billion. Those in the industry know that mixing and conveying machines used in cheese processing need proper seals, lest they suffer costly issues such as:

  • Unscheduled downtime
  • Gearbox failure
  • Product contamination
  • Plant sanitation
  • Shaft repairs

Advanced rotary shaft seals by CinchSeal are proven to virtually eliminate all these issues.

Problems with Older Seals

Traditional sealing methods, such as mechanical packing and lip seals, often lead to these costly problems in mechanical conveying and mixing equipment used in cheese processing such as:

  • Screw Conveyors
  • Cheese Cookers
  • Mixers
  • Blenders
  • Rotary Air Locks
  • Augers

By contrast, CinchSeal rotary shaft seals are designed to save time, product, and money.

Why CinchSeal Shaft Seals are Ideal for Cheese Processing

For the food processing industry, CinchSeal rotary shaft seals offer several key benefits:

  1. Safety Certification
    Safety is paramount in food processing. CinchSeal collaborates with the U.S. Department of Agriculture to ensure each seal meets stringent safety standards. USDA certification for poultry and dairy ensures protection against contamination.
  2. Contamination Prevention
    CinchSeal shaft seals prevent contamination by eliminating leakage, featuring:
    • FDA-approved silicone elastomer molded slightly smaller than the shaft to prevent leaks
    • Elastomer that spins with the shaft, preventing shaft damage
    • Rotor cups that seal potential leak pathways
    • Air purging to create a natural air barrier that reduces heat from friction and reinforces the seal
  3. Innovative Design
    • Larger shaft/seal interface to reduce leakage risk
    • Boot-mounted rotor cups that allow for 1/4″ shaft misalignment
    • Self-cleaning and self-lubricating features for dry operation
    • Repairable without unbolting the housing, using repair kits for easy maintenance
  4. Cost-Effective Performance
    CinchSeal’s advanced rotary shaft seal design improves cost-effectiveness by:
    • Preventing product loss
    • Reducing maintenance needs
    • Protecting shafts and bearings
    • Withstanding challenging environments
    • Promoting employee safety
    • Simplifying maintenance and repairs

Rising Dairy Demand

The demand for cheese, driven by its use in products like spreads, shredded cheese, cheese powders, and various melted and liquid cheeses, is increasing globally. Different manufacturing processes cater to different cheese product types:

  • Processed Cheese: Comprised of 51% natural cheese, with emulsifiers, whey, additives, and preservatives, processed cheese is cost-effective and popular.
  • Restricted-Melt: Softens at high temperatures without melting, ideal for baked or fried foods.
  • Standard-Melt: Melts at moderate temperatures, suitable for slicing and shredding.
  • Quick-Melt: Melts easily, perfect for dips, sauces, pizzas, and burgers.


CinchSeal’s contribution to cheese processing and the broader food industry highlights the need for innovative seal designs that prevent contamination, leakage, and costly repairs. For over 30 years, CinchSeal has been a leading manufacturer of rotary shaft seals for various bulk-handling equipment, providing significant upgrades over outdated sealing methods.

For more information, contact CinchSeal. Quotes and drawings are available within 24 hours, and custom engineering typically takes 10 days.

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Rotary Shaft Seals