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Pre-assembled plug for permanent leak-proof seal to drilled holes

By Lee Products on

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LeePlugs_PreInstall

A pre-assembled plug that combines the benefits of easier handling and faster installation with the proven reliability and performance of Lee expansion plugs, was among the new products to be exhibited by Lee Products at the recent Farnborough International Air Show.

The Lee Plug is simply the most effective and field-proven method of ensuring a permanent leak-proof seal to drilled holes in critical applications, including aviation, machine tools, down-hole tools, moulds, or any application requiring a permanent seal.

The operating principle is based on a cylindrical plug with a tapered hole part-way through its centre and small grooves on its outside diameter. It is slipped into a reamed counter-bore in the product and then a tapered pin is driven into the plug until the ends of the pin and the plug are flush with each other. Controlled expansion causes the lands and grooves of the plug to ‘bite’ into the surrounding material forming independent seals and retaining rings. The result is a positive, reliable and permanent, leak-proof seal for both liquids and gases which as a simple and proven principle, contributes to significant improvements in the design and manufacture of all fluid devices.

Lee’s pre-assembled plugs are available in four sizes of .093, .125, .156 and .187in diameter,  are designed for high-proof pressures up to 12,000psi and are compliant with RoHS, REACH, WEEE and ELV requirements. Assembly time for the pre-installed plugs is approximately 25 per cent less than for the standard short aluminium Lee Plugs.

Lee Products

Innovation in miniature since 1948. The Lee Company has pioneered the development of miniature, precision-fluid control components for aerospace, down-hole oil tools, machine tools, medical/scientific instrumentation and ink-jet printing.

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Innovation in miniature since 1948. The Lee Company has pioneered the development of miniature, precision-fluid control components for aerospace, down-hole oil tools, machine tools, medical/scientific instrumentation and ink-jet printing.

Lee’s unique capabilities in miniaturisation and engineering expertise keeps the company at the forefront of fluid flow technology. Lee Products maintains a sales force of graduate engineers who are ready to assist customers in solving fluid flow problems, and a significant amount of stock to ensure on-time deliveries.

Quality Assurance at Lee is a management commitment of the highest order. Lee Products Ltd achieved accreditation to ISO9002 in 1999 and ISO9001:2000 in 2003, while The Lee Company was one of the first aerospace companies to achieve accreditation to AS9000. The Lee Company has subsidiary companies in France, Germany, Italy and Scandinavia, and is represented by agents and distributors throughout the world.

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