Steel Ball Expansion Sealing Plugs

Product Description 

Our ball-style expansion plugs feature a high-precision mechanical expansion design to ensure superior leak-proof integrity. By driving a stainless steel ball into the sleeve, the component expands to create a permanent, high-pressure interference fit against the gallery wall. With a certified IP68 sealing rating, these plugs offer a "zero-failure" solution for sealing machined process holes. This design eliminates the need for threading, tapping, or messy sealants, providing a tamper-proof and maintenance-free seal.

Industry Applications 

Engineered for uncompromising performance in high-stress environments:

• NEV Battery Packs: Sealing coolant galleries and air-tightness test ports in electric vehicle battery enclosures.

• Hydraulic Systems: Permanent closure for cross-drilled passages in manifolds and valve blocks.

• Precision Machinery: Protecting internal fluid pathways in high-end industrial equipment.

• Automotive Powertrain: Secure sealing for engine blocks, transmissions, and housing components.

• Core Value: Optimized for high-reliability process hole sealing where long-term durability and resistance to extreme pressure are essential.