Lee Plugs
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Product Overview
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.
- No need for O-rings, threads, or sealants. It is removable.
- Proof pressures exceeding 30,000 psid
- Sizes between Ø0.093” and Ø0.656”, Metric size 2.5mm to 8.0mm
- Available in Aluminum, Stainless Steel, Monel, Titanium or MP35N
- High Strength version available
- Only qualified Boeing or SAE expansion plug
- Burst plug version is available, burst pressure from 3000 – 15,000psid, size from 0.250” to 0.531”
R.F.O Sealing Plugs (Radial Force Only)
- Size available Ø0.156” to Ø0.875”
- No Downward Pressure During Installation
- No Support Shoulder Required
- Ideal for Thin Wall Applications
- Easily removable
A.F.O Plugs (Axial Force Only)
A.F.O Plugs (Axial Force Only)
- Size available Ø0.190” to Ø0.750”
- Reusable – allows easy access to sealed passageways
- Seals to 56,000 psi
- Usable to 600°F
- All CRES construction – No sealants or O-rings. NACE compliant material available
- Floating seal self-aligns – prevents galling




