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1 min read

Rulon 641: Performance from Food Processing to Medical Equipment Manufacturing

By Dave Biering on July 16, 2019

Rulon 641: Performance from Food Processing to Medical Equipment Manufacturing

The food and medical manufacturing industries share many commonalities; most notably, they operate in environments with strict regulations for quality, safety and sanitation.  Processing equipment must be of the highest quality and offer contamination resistance.  Rulon® 641 is the only FDA-cleared material for use in food processing that also has USP Class VI approval for medical applications.

Two demanding manufacturing environments, one common material ― Rulon 641.  See our Rulon Comparison Chart to explore the advantages.

Temperature tolerance for food processing

A major food processor approached us seeking a replacement for their virgin-PTFE seals located on the miniature cryogenic valves of the fast-freeze systems. The equipment is used to flash-freeze fruits and other foodstuffs. The PTFE seals were failing from exposure to the cryogenic temperatures and required frequent and expensive change out. Rulon 641 offered our partner a material with superior temperature stability and a longer lifespan for significant savings. Rulon 641 is non-abrasive for use against the systems’ stainless mating hardware, and has maintained good sealability under difficult conditions. 

Superior sterilization for medical manufacturing

We’ve also partnered with the manufacturers of surgical laser devices to replace failing PTFE valves seats with Rulon 641.  Rulon excels in the rotary and oscillating movements required of this application and has a very low coefficient of friction and a superior wear factor.   The material can be lapped using standard procedures to produce extremely good surface finishes in precision valve seats.  And the material’s white, stain-resistant color indicates a sanitary compound for medical environments.  Rulon 641 has USP Class VI approval, and easily tolerates all standard CIP procedures required of both the food and medical industries.

Is Rulon 641 the right material for your application?  Contact our Engineering Experts for a consultation. Or read our free Rulon White Paper to learn about the advantages of Rulon’s processing controls.

Rulon - Quality Assurance Begins With Precision Processing

Topics: Food Rulon Medical
2 min read

Rulon Shapes, Forms or Fabrication – Which is Right for You?

By Dave Biering on December 19, 2017

Rulon is available in shapes and forms like rod, tube, sheet, and tape.

Have you heard about the newest Rulon formula, Rulon 1834?  It’s an exciting addition to the Rulon fluoropolymers product line. You may already know that each Rulon formula can be custom blended with fillers and pigments, but did you know that Rulon is available in shapes and forms like rod, tube, tape, or even custom fabrication to your specs? Let’s review some options: 

All Rulons offer similar temperature ratings, chemical resistance, friction and wear values. But when it comes to choosing a shape, much will depend on the intended function of your part, your delivery timeline, and your budget:

Rulon tape

Need to prevent metal-to-metal contact? Consider Rulon tape, which is also known as bearing tape. It can be cut to any length, and is available wound flat or spiral shaped. Tape prevents metal-to-metal contact between piston rods/cylinders and mating hardware in hydraulic and pneumatic applications. It guides the bearing between the metallic components during stroke and static movements, or can act as a barrier for insulated wire.

Rulon rings

Solid and split piston rings can be designed with any number of joint, length and diameter configurations, and with unique performance attributes.

Basic shapes or standard forms

In a rush for off-the-shelf parts? Rulon is available in standard sleeve, flange, thrust, mounted and spherical shapes for use as standard plane bearings. Sizes are also compatible with bronze standards for precise hardware fitting. Explore the Rulon comparison chart.

Molded rods, sheet or tube

Want to machine your own parts? Rulon can be easily machined, but there are some considerations. Get the Essential Machining Guide technical paper for specific instructions. With the right tools and training, your shop can finish Rulon via sawing, grinding, tapping threading, reaming, turning, screw machining and etching. With some expert advice we can even help you reduce scrap loss to save on material costs.

Have a tight delivery and need to outsource your fabrication? We can help you here, too. Custom options are virtually unlimited, just fill out an engineering worksheet with your specs, and we’ll set you up a quote. With outsourcing, you’ll never have to buy and maintain your own equipment, and we can help you make your production delivery goals.

Let’s start a project together!

Rulon - Quality Assurance Begins With Precision Processing

Topics: Rulon
1 min read

Counterfeit Rulon Bearings and Material Failure – What can go wrong?

By Dave Biering on September 9, 2014

Counterfeit Rulon Bearings and Material Failure - Free White PaperHave you downloaded your free copy of our Rulon technical paper, How to Recognize Genuine and Avoid Counterfeit? This paper was developed as a resource to help you source quality components from the many bogus “Rulon” materials that have flooded the market in recent years. But you may wonder what can really go wrong with counterfeit materials ― we thought we’d provide a quick list of common failures:

Rulon is universally recognized as the gold-standard in bearing-grade materials, yet some processors claim they produce genuine Rulon when they are actually producing lesser-quality materials. To avoid these materials, you should consult a trusted source to ensure that the material is manufactured under proper controls. Without the right controls, counterfeit materials can lead to:

Mechanical failure:

  • Inconsistent friction levels
  • Lower levels of stability in high-temperature transitions
  • Chemical failure:
  • Lower resistance to corrosive agents
  • Reduction in material lifespan
  • Change in flammability properties

Electrical failure:

  • Changes to dielectric constant and surface sensitivity 
  • Reduction in arc resistance

Another good resource to help separate genuine from counterfeit is the Materials Database, which provides exact technical specifications. With due diligence, you can avoid the pitfalls of counterfeit materials. Because after all, Quality Control Begins with Precision Processing!

Topics: Rulon Bearing Failure Counterfeit Bearings
1 min read

Q&A: How can I Bond Rulon? See a Demonstration!

By Dave Biering on October 8, 2013

Bonding Rulon® to steel, aluminum and other substrates can be easily achieved, however, surface preparation is critical in order to achieve the best bond strength.  One material that is specially formulated for bonding is Rulon 142, which is etched on one side.  The material was developed primarily for machine tools and is known for superior performance in linear bearings and slides.

Watch this demonstration to learn about the proper techniques for preparing, bonding, and finishing  Rulon 142 and other formulas. 

Or just Ask the Experts in the TriStar Lab for a specific recommendation on your material; we are here to offer assistance!

Topics: Bonding Rulon