Stopping gasket failures on outdoor enclosures for a Spanish panel builder
Field water-ingress incidents per 1,000 enclosures per year
241.6
Measured over a 180-day programme
Volume
7,600 enclosures over two years, three sizes
Client
Electrical panel builder, Spain
The situation
A Zaragoza panel builder was seeing water ingress in outdoor enclosures at solar sites, traced to a gasket that hardened under UV exposure within 18 months and lost sealing pressure at the door corners.
What was done
- The requirement was re-specified against a measurable acceptance test before any price was discussed — in this case field water-ingress incidents per 1,000 enclosures per year measured on incoming goods, not on a supplier’s own paperwork.
- Process control was changed to hold that measurement: ingress protection at IP66 per IEC 60529, test report supplied, material at Type 304 stainless, 1.5 mm body / 2.0 mm door.
- Evidence was tied to each lot so the buyer could verify the claim rather than trust it. That is why the programme ran 180 days: the first 9 lots were used to prove stability before volume was released.
Evidence you can ask to see
IEC 60529 IP66 test reports, UV ageing test data, gasket supplier material specification, buyer field service records
These are buyer-side or third-party records, not supplier marketing. Where a document is commercially sensitive we will ask the buyer for permission before sending it, and say so rather than sending a redacted page that proves nothing.
The part involved
| Ingress protection | IP66 per IEC 60529, test report supplied |
|---|---|
| Material | Type 304 stainless, 1.5 mm body / 2.0 mm door |
| Dimensions | 800 × 600 × 300 mm (H × W × D) |
| Surface finish | Brushed, Ra ≤ 1.2 µm; optional powder coat RAL 7035 |
| Gasket | Poured polyurethane gasket, oil and UV resistant |
| Door | Single door, 130° opening, 3-point locking, reversible hinges |