Anti-Loosening Permanent sealing of process holes in aluminum parts
All-aluminum pull-expansion plug
Product photos
Actual photos, not renders
Illustration note
The image shows an actual part of this specification; appearance differs with surface treatment and head style, and the delivered part prevails.
Images are for appearance and structure reference; dimensions and tolerances are subject to the specifications and the applicable standards on this page.
Product description
Compiled from the existing technical description of this product on this site
The all-aluminium pull-expansion plug has an aluminium alloy body; during installation, the pull-expansion structure expands the body radially so that it fits tightly against the hole wall to achieve a seal rated up to IP68. Its material is similar to aluminium substrates, which helps reduce the risk of galvanic corrosion (to be confirmed on the actual structure); it is suitable for one-time permanent closure of process and inspection holes, maintenance-free over the long term and without repeated disassembly.
Specifications
The parameters listed on this page are subject to final inspection and the applicable standards; items not listed follow the customer drawing or the order agreement and are not committed by default.
| Material | Aluminium alloys |
|---|---|
| Surface treatment | Anodizing |
| Sealing and conditions | All-metal expansion seal; working pressure up to approx. 300–500 bar depending on size, temperature resistance approx. −40~+100 ℃ (up to +150 ℃ for some series); actual values confirmed by measurement per customer drawings |
| Standard | Per customer drawings / corporate standard; aluminium grade GB/T 3190; anodizing GB/T 8013; sealing rating IP68 (IEC 60529) |
| Typical application | Permanent sealing of process holes in aluminum parts |
Spec lookup
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Filter results are based on the specification fields published on each model page and are for preliminary screening only; the final selection must be confirmed in light of the actual load, plate thickness and assembly process.
Drawings & customization
No public catalogue is available for this series; drawing-based requests are handled per project.
Made to drawing / sample replication
A 2D drawing or a physical sample is enough for evaluation; once confirmed, we issue drawings, build samples and obtain first-article approval before volume production. Drawings and project information are handled under confidentiality requirements.
Manufacturing process
The usual process route for this product family; actual operations follow the drawing and order requirements.
- Body formingCold heading or turning
- Sealing structureO-ring groove / face seal / expansion structure
- Seal assemblyO-ring, pre-applied adhesive or steel ball assembly
- Airtightness and watertightness sampling inspectionSampling inspection by sealing class
- Surface treatmentZinc-plated / passivated / anodised
Capacity & delivery
Taken from the company's published capacity and certification information; no unverified claims are included.
FAQ
Material, standards, surface treatment and installation points for this model; the data comes from the specification table on this page and from the national standards cited in the answers.
Q1What material is the all-aluminium expansion sealing plug made of? What strength level does it reach?
The specification table on this page states: material is aluminium alloy. Material certificates and mechanical property test reports can be provided with the goods; batch acceptance follows the specifications above.
Q2To which standard is the all-aluminium expansion sealing plug produced and inspected?
Standards stated in the specification table on this page: per customer drawing / corporate standard; aluminium alloy grade GB/T 3190; anodizing GB/T 8013; ingress protection IP68 (IEC 60529). Dimensional inspection reports can be provided with the goods; batch acceptance is carried out in accordance with the above standards and the drawings agreed by both parties.
Q3What surface treatments are available for the all-aluminium expansion sealing plug? How to choose?
The specification table on this page lists surface treatment: anodizing. Different coatings differ in appearance, corrosion resistance and cost; choose according to the service environment and order agreement.
Q4In which applications is the all-aluminium expansion sealing plug used?
Typical applications listed in the product description on this page: process holes in die-cast aluminium housings; new energy vehicle battery pack housings; telecom and server chassis; aluminium hydraulic and pneumatic parts. Overview: the all-aluminium pull-expansion plug has an aluminium alloy body; during installation, the pull-expansion structure expands the body radially so that it fits tightly against the hole wall to achieve a seal rated up to IP68.
Q5What exactly does the IP68 rating marked for the all-aluminium expansion sealing plug mean?
According to IEC 60529: the first digit 6 means complete protection against dust; the second digit 8 means continuous immersion in water without ingress under conditions agreed between the manufacturer and the user. There is no uniform fixed water depth or duration for rating 8; the test conditions agreed by both parties and measured results govern. (Applies to this model “Pull-expansion plug”.)
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