All-Aluminum High-Pressure Expansion Sealing Plugs
The All-Aluminum High-Pressure Expansion Sealing Plug closes processing holes permanently. It is installed by expansion: the plug is driven into the hole and expands outward, pressing against the wall and creating a high-integrity interference fit that both retains the plug and seals the bore.
The result is a leak-proof closure rated up to IP68, achieved without thread sealants, without tapping and without any additional sealing component. Because the mechanism is mechanical, sealing performance does not depend on chemical cure or on the operator's judgement.
The plug also resists vibration, so it will not work loose in service. Made from premium aluminum alloy, it contributes minimal weight and remains compatible with aluminum housings, making it a clean, durable solution for closing galleries and test ports in production housings.
A definitive solution for permanent, high-performance sealing, these plugs close coolant channels and air-tightness testing ports in new-energy-vehicle battery pack enclosures.
They are also used in hydraulic and pneumatic systems and in precision machined housings where a processing hole must be sealed for the life of the product without adding sealing compounds.
