If you have a cross-hole in your hydraulic manifold, you should seal it with a Lee Betaplug®. That’s the end of the story because only Lee Betaplugs are specifically engineered to seal cross holes in metal or plastic housings. This means they can be used in a wide variety of materials. Other solutions, such as ball bearings or bolts coated in adhesive, were never designed for sealing purposes, and they don’t offer 100% reliability. They fail under pressure – and sometimes they fail without any pressure at all.
The Lee Betaplug uses the market-leading aerospace design heritage of The Lee Company and applies it to the automotive market. Lee Betaplugs work without threads or sealants. Instead, they are pre-assembled, one-piece tapered expansion plugs designed to seal cross holes using the principle of controlled expansion. Lands and grooves on the outer diameter of the plug body bite into the wall of the housing during installation, creating leak-tight seals and ensuring retention. This single-piece design helps keep costs down, making the component cost-effective for mass production.
Lastly, the tapered design of the Lee Betaplug eliminates the need for tight manufacturing tolerances, which is ideal for high-volume applications. The matching tapers of the Betaplug and its installation hole create a perfect fit, eliminating the need for additional expansion. Since the size of the tapered pin precisely controls the Betaplug’s expansion, the amount of expansion and any resulting boss stress is completely predictable. This means that installation is repeatable – the same size plug will create the same stress, which is ideal for brittle materials or thin wall conditions. In short, no matter what kind of vehicle you’re making, Lee Betaplugs will undoubtedly help make it more reliable.
The 6000 Series Betaplug is built for high-pressure automotive systems. Design the 6000 Series Betaplug into systems up to 7000 psi, and choose from parts that range from 4 mm to 8 mm in diameter.
The Short Betaplug was developed to optimize process and product settings and allows for the shortest installed height. Install the Short Betaplug in systems up to 500 psi, and choose plugs that range from 5 mm to 20 mm in diameter.
Partner with The Lee Company and get much more than just a supplier of top-quality fluid control products. Find solutions, maximize productivity, and drive efficiency across your operations using our literature, case studies, and videos. Check out these resources for automotive manufacturers to learn more.