The Lee Plug product line is the foundation for Lee Company extensive line of aerospace products. Back in the 1950s, engineers were searching for a more reliable and effective way to seal machined and cross-drilled holes in metal housings. In response to this need, The Lee Company created a plug designed to form a permanent leak-tight seal without the use of O-rings, threads, or sealants. The Lee Plug remains the best-seller for The Lee Company, with well over 200 million plugs having been used on aircraft, missiles, spacecraft, and other sophisticated hydraulic systems.
Lee Plugs are manufactured to exacting tolerances. Every process is precisely controlled. Each lot of pins and plugs undergoes a rigorous inspection and acceptance testing. This ensures performance when any failure could be catastrophic.
Standard Lee Plugs are available in multiple grades of aluminum, stainless steel, and Monel, plus titanium and MP35N. They can be purchased in diameters from 0.093 to 0.656 of an inch or metric sizes from 2.5 to 8.0 mm.
R.F.O Sealing Plugs (Radial Force Only)
A.F.O Sealing Plugs (Axial Force Only)
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TYPES OF SEALING PLUGS
Lee R.F.O. Plugs are designed to seal holes in thin walls or fragile materials. Designed to be easily removable, these plugs do not require a support shoulder and the installation system ensures that no downward pressure is applied to the product.
Lee A.F.O. Plugs are both removable and reusable due to their threaded design, which allows technicians easy access to sealed passageways. In spite of this, the A.F.O. Plug still seals up to 56,000 psi. Each plug features a floating seal that self-aligns, allowing for threaded holes that aren’t concentric with the through-hole. Lastly, the A.F.O. designation means that no radial force is applied during installation, making this component suitable for thinner-walled housings.
About The Lee Company: Sealing Plugs
The Lee Company’s first-ever product was the Lee Plug®, a product developed to solve a specific customer problem. In the 70+ years that have followed this invention, Lee Company have continued to create and develop new, innovative, and groundbreaking products to solve customers’ problems.
The Lee Company are the original inventor of dozens of unique miniature fluid control products and technologies that have been – and still are – found in everything from the cars and planes you use for transportation to the medical devices that help diagnose and treat illnesses. They are also performing critical functions in satellites thousands of miles away in outer space and in oil wells miles below the earth’s surface.
