Halder Expander Sealing Plugs | Precision Leak Prevention Solutions | Freer Tool

Halder expander sealing plugs—also called expanding sealing plugs or expander plugs—are used to seal bores, holes, or ports by expanding to create a secure fit (application dependent). Expanding plugs are commonly used in industrial environments when you need a removable, repeatable seal for processes such as temporary sealing during assembly, maintenance, machining, cleaning, or testing (application dependent). Because sealing performance depends heavily on size and material, selecting the correct plug is mainly about matching the plug to your bore diameter and the conditions of use.

Fast and Process-Safe Closing and Sealing Without Additional Sealants - Expander sealing plugs are closure plugs for the fast and process-safe closing and sealing of boreholes / channels of fluid technology without additional sealants in a wide diversity of materials. Expander sealing plugs are suitable for permanent closure and sealing - but can also be dismantled if required. Expander sealing plugs are often also referred to as closure plugs or blanking plugs. They can be used in a wide range of industrial sectors for many applications, including hydraulic systems, engine construction, gear construction and fixture construction.

The extensive product range includes different versions from stock:

• Expander sealing plug (steel / stainless steel)
• Expander sealing plug with pull-anchor – installation using user-friendly assembly tools (available as accessories)
• Expander sealing plug with elongated pull-anchor – especially suitable for the separation of two channels

As installation accessories we offer:

• Setting dies
• Assembly tool (mechanically / pneumatically)
• Distance bushing