All-Aluminum High-Pressure Expansion Sealing Plugs

Aluminium sealing plug for lightweight housings where mixed metals are undesirable.

Key specifications

Material6061-T6 Aluminum Alloy
StandardGB/T 90.1, customer drawing
Head stylepan head

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Product overviewOverview

An expansion plug works by swaging: tightening draws a cone into the sleeve, growing its diameter until it presses against the bore along its full length. Because the seal is a full-length interference fit rather than a single O-ring line, it tolerates higher pressure and rougher bores.

Material: 6061-T6 Aluminum Alloy.

Key featuresFeatures

All-aluminium body avoids galvanic coupling in aluminium housings.
Tolerates bore roundness and finish variation better than an O-ring plug.
Low installed height, suitable for shallow ports.
Suitable for coolant and hydraulic circuits after media compatibility check.

Typical applicationsApplications

EV cooling jackets
Aluminium hydraulic manifolds
Battery pack coolant ports

Selection notesSelection

Confirm bore diameter and depth: the sleeve needs full engagement to seal.

Frequently asked questionsFAQ

How do I specify the All-Aluminum High-Pressure Expansion Sealing Plugs?

Confirm bore diameter and depth: the sleeve needs full engagement to seal. Material: 6061-T6 Aluminum Alloy.

What matters during installation of the All-Aluminum High-Pressure Expansion Sealing Plugs?

Lubricate the O-ring with the specified medium, then tighten until the faces contact — compression is set by the groove, not by torque All-aluminium body avoids galvanic coupling in aluminium housings.

Specifications

Material	6061-T6 Aluminum Alloy
Standard	GB/T 90.1, customer drawing
Head style	pan head

Manufacturing and inspection

Material verified spectrally; dimensions sampled.Material certificates and dimensional records accompany each lot; material and dimensional records are supplied per batch.