When sourcing or selling LED strip lights on Alibaba.com, one of the most critical specifications buyers evaluate is the waterproof rating. Understanding the difference between IP20, IP65, and IP68 is not just technical knowledge—it directly impacts your product's market positioning, pricing strategy, and customer satisfaction on the Alibaba.com marketplace.
What Does IP Rating Mean? The IP (Ingress Protection) rating system is defined by the international standard IEC 60529, which classifies the degree of protection provided by electrical enclosures against intrusion from dust, accidental contact, and water [4]. For LED strip lights, the rating typically takes the form "IP" followed by two digits: the first indicates protection against solid objects (dust), and the second indicates protection against liquids (water).
IP Rating Comparison: Technical Specifications and Applications
| IP Rating | Dust Protection | Water Protection | Typical Applications | Coating Type | Cost Premium |
|---|---|---|---|---|---|
| IP20 | No protection | No protection | Indoor dry areas (bedrooms, living rooms, cabinets) | None (bare PCB) | Base price (0%) |
| IP65 | Dust-tight | Water jets from any direction | Outdoor covered areas (patios, under eaves, signage) | Epoxy or silicone coating | +15-25% |
| IP67 | Dust-tight | Temporary immersion 1m/30min | Outdoor exposed areas, occasional water exposure | Silicone coating | +30-40% |
| IP68 | Dust-tight | Continuous immersion beyond 1m | Underwater applications (pools, fountains, marine) | Silicone tube + sealing | +30-60% |
Important Note for Alibaba.com Sellers: The IP rating alone does not guarantee performance. Real-world failures often occur due to poor installation, inadequate power supply protection, or manufacturing defects in the coating. As one Reddit user discovered with their food truck installation, "IP65 WS2811 cob LEDs failed when exposed to water despite silicone sealant" [3]. This highlights the importance of understanding the limitations of each rating and communicating them clearly to buyers on Alibaba.com.

