Are you looking for the most reliable and economical method for sealing fluid passageways?

Lee Plug® expansion plugs seal fluid passages leak-tight, without the use of O-rings, threads, or sealants. It is simply the most successful method of sealing drilled holes in critical applications. Well over 100 million Lee Plugs have been used on aircraft, missiles, spacecraft, and other sophisticated hydraulic systems that require a permanent leak-tight seal.

In addition to our expansion plug family, Lee offers threaded A.F.O. and Dual Sealing A.F.O. plugs for higher pressures up to 56,000 psi. Both are offered in NACE Compliant versions to meet the special demands of the oil and gas industries.

EXPANSION PLUGS

THE ORIGINAL LEE PLUG

The original Lee Plug is available in short and long versions in a range of English sizes from 0.093″ dia. to 0.656″ dia., and in metric sizes from 2.5mm to 8.0mm. A variety of standard material combinations are available.

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LEE PLUG RFO® (RADIAL FORCE ONLY)

The Lee Plug RFO is designed to seal holes in thin walls or fragile materials. Designed to be easily removable, the plug does not require a support shoulder and the installation system assures that no downward pressure is applied to the product.

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MP35N LEE PLUG®

An addition the our comprehensive product line of field-proven Lee Plug expansion plugs. Constructed entirely from MP35N, a nickel-cobalt based material, these plugs are compliant with NACE MR0175/ ISO15156.

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QUICK INSTALLATION LEE PLUG®

The Quick Installation Plug combines ease of handling and installation with the proven reliability and performance of Lee Plug® expansion plugs.

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TITANIUM LEE PLUG®

The Titanium Lee Plug® is part of The Lee Company’s comprehensive product line of field proven Lee Plugs offered by DenisDePloeg. These expansion plugs are the optimal solution for reliably sealing holes in titanium manifolds.

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THREADED PLUGS

A.F.O. (AXIAL FORCE ONLY) PLUGS

A.F.O. Plugs provide a leak-tight, metal-to-metal seal in higher-pressure/high-temperature manifold applications. Designed to be both removable and reusable, the plugs feature a unique floating seal that self-aligns to prevent galling.

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DUAL SEALING A.F.O. (AXIAL FORCE ONLY) PLUGS

The Dual Sealing A.F.O. (Axial Force Only) Plug offers a leaktight, metal to metal seal for high pressure applications and also incorporates an O-ring with backup rings for venting or charging. Pressure can be vented out of a side port to remove air from a hydraulic system or safely release trapped high pressure gas.

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Suitable Markets

Precision Hydraulics

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Suitable Markets

Precision Hydraulics

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