High-Performance Expansion Sealing Plugs
The High-Performance Expansion Sealing Plug closes machined processing holes permanently. Installation uses a pull-to-expand mechanism: as the plug is actuated, its sleeve expands radially and presses hard against the bore wall, forming a high-pressure interference fit.
That mechanical fit both retains the plug and seals the hole. The result is an IP68 sealing rating achieved without threading, without tapping, without liquid sealants and without any requirement to re-tighten the fastener later in the product's life.
Because the closure depends on permanent deformation rather than on a chemical seal or on service access, it is a maintenance-free and tamper-proof solution: the joint will not loosen, and it cannot be removed accidentally. Performance is retained even under extreme operational stress.
A definitive choice for high-reliability sealing in demanding environments, these plugs seal air-tightness test ports and coolant channels in electric vehicle battery enclosures.
They also provide reliable, permanent closure for cross-drilled galleries in hydraulic and pneumatic systems and in precision machined housings where processing holes must be closed for the life of the assembly.
