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1 min read

Rulon J vs. Teflon: An Aerospace Application

By Dave Biering on September 22, 2015


Takeoffs and landings, friction and fatigue, these are just a few of the demands on aerospace bearings. Should designers choose Rulon J tape or Teflon® tape for an aerospace bearing application? Which material can resist the challenges of wear and corrosion in aerospace and aviation? We tested both materials, and this is what we found.

A major manufacturer of helicopter components contacted us to improve the performance of the cowling rub strips on their helicopter body panels. The strips are riveted to the body panels of the copters, and are designed to stop the “rub” and wear caused by engine vibration.

Virgin Teflon tape worked in this application initially, but our client complained that it would eventually wear from the extreme friction that occurred over hundreds of takeoff and landing cycles. Each tape failure caused the copters to be pulled to the maintenance hangar, which resulted in lost flight time, and high Teflon replacement costs.

Rulon J, on the other hand, outperformed all tests and gave the client the extended wear they needed. Rulon J is a reinforced material that provides up to 3x the bearing service life of other materials. It also reduces friction and works well against soft mating materials such as composites, 316 stainless steel, aluminum, mild steel and brass. It is made of a specialized filler which gives it better tolerance and stability, even in the wide-ranging temperature conditions of a helicopter in flight.

The winner? Rulon J exceeded the applications requirements, in fact, all Rulon formulas can be etched with pressure sensitive adhesives (PSA) added. As an added bonus, Rulon tape provides a better sound barrier against engine noise. 

Choose Rulon J for:

  • Abrasion resistance
  • Lower maintenance
  • Grease-free operation
  • Reduction of stick/slip
  • Good noise insulation 

Do you know how to identify genuine Rulon from counterfeit? Read our technical white paper to find out how! Or request a quote for a custom width of Rulon J tape today!

Download our Rulon Bearings white paper

Topics: Rulon J
1 min read

Rulon Reels In Custom Fishing Components

By Dave Biering on August 28, 2014

Rulon Reels In Custom Fishing ComponentsHere’s a fishing tale about the one that didn’t get away! 

Our team worked with a high-end fishing manufacturer to design a whole new reel drag system. The drag is actually a slip-clutch assembly that allows the line to move freely under the pressure of a sudden hook or the pull of a large fish ― basically keeping the fish engaged while the line is hauled in. 

Why did we choose Rulon LR and Rulon J formulas for this unique clutch application? It all came down to matching the right compounds to the right surface materials.

The new clutch devices incorporate carbon composite bushings for the drag pin and drag washers. With this combination of Rulon materials, the reel now produces a very efficient and smooth transition during drag adjustments. Rulon has helped to increase the drag response time, given longer wear life and provided a competitive value.

Since this initial reel development, our Surface Modification team has also worked with other high-end manufacturers to bond washers to the reel’s metal substrates. 

An added bonus is that Rulon is a self-lubricating material that eliminates the need for manual greasing for the lifetime of the product

Ever wonder if the Rulon material that you have purchased is the “reel” deal? Get your free copy of our technical paper, How to Recognize Genune and Avoid Counterfeit! Or just Ask an Expert!

Topics: Rulon J Surface Modification Rulon LR