IPX Waterproof Rating Guide: IPX6, IPX7, IPX8 | YILON 翼隆实业

IPX is the water-protection code in IEC 60529. The higher the number, the stronger the protection. When buying zippers you will most often see IPX6 / IPX7 / IPX8: IPX6 resists powerful jets, IPX7 handles temporary immersion, IPX8 allows continuous immersion.

IPX rating chart

Rating	Test conditions	Protection	Typical uses
IPX4	Splashing water	Everyday splashes	Light outdoor, everyday items
IPX5	Water jets (low pressure)	General jets	Outdoor sports gear
IPX6	Powerful jets (12.5mm nozzle, 100L/min, 3m, ≥3 min)	Storm-level jets	Rainwear, dry bags, fast-dry wear
IPX7	Immersion 1m for 30 min	Temporary immersion	Wading, snorkeling, water sports
IPX8	Continuous immersion >1m (depth & duration per agreement)	Continuous immersion	Drysuits, military, medical pressure-sealed equipment

Important notes

IPX covers water ingress only — it does not equal airtightness or pressure retention; for that, check sealing-pressure tests such as 60kPa.
A product can pass multiple ratings; rely on the manufacturer's test report.
Ask suppliers for third-party or factory test reports for the rating you need.

YILON: YILON offers IPX6-IPX8 full-rating testing; airtight zippers additionally carry a 60kPa sealing-pressure test, with factory reports included.

Contact YILON for Guidance