Detailed specs for Long leak-proof-3-layer-case Wholesale from KeXinMaterials source factory. Outer/inner dimensions in mm/inch, weight, material, foam options. Compare WL2305 series. MOQ 30. 12h quote, 35-day delivery.
Choosing Long leak-proof-3-layer-case Wholesale comes down to three numbers: outer dimensions, inner cavity, and the gear you are protecting. We have been publishing the full WL series spec data since 2014. This page is the complete reference.
For your reference, here are the WL series models we typically use for Long leak-proof-3-layer-case Wholesale applications. Outer dimensions (OD) are measured to the outside of the case; inner dimensions (ID) reflect the usable cavity after subtracting wall thickness. All in millimeters; imperial dimensions in our catalog PDF.
| Model | Outer (mm) | Inner (mm) | Weight (g) | Material | Size Class |
|---|---|---|---|---|---|
| WL2305 | 230×180×45 mm | 225×150×40 mm | 240 g | PP+PC | First Aid Kit |
| WL3812 | 380×320×120 mm | 365×280×110 mm | 1100 g | PP+PC | Vaccine Carrier |
| WL6030-O | 600×450×300 mm | 575×420×280 mm | 4200 g | PP+PC+VIP | Organ Transport |
The most common model for "Long leak-proof-3-layer-case Wholesale" buyers is the WL2305 (230×180×45 mm OD, 240 g empty weight, PP+PC body).
Four components define Long leak-proof-3-layer-case Wholesale protection: shell (PP or PP+GF), foam (25 kg/m³ closed-cell PE), seal (silicone gasket around the lid), and pressure valve (automatic Gore-Tex membrane for IP67/IP68). Each component is tested. Each can be replaced if worn.
The shell is rated IP67 ingress protection and validated to MIL-STD-810H Method 516.8 (26 drops at 1.5m). Temperature range is -80 ~ +50 (depending on PCM/VIP configuration) °C. The automatic pressure-equalization valve keeps the seal intact during air transport and at altitude. Latch is a double-throw design rated for 5,000 open/close cycles. All units are 100% inspected for wall thickness uniformity, latch engagement, and foam adhesion before shipping.
Here are 3 real Long leak-proof-3-layer-case Wholesale foam layouts from 2024-2026: (A) Sony A7 IV + 24-70mm + 70-200mm + 3 filters + 2 batteries — fits WL2808. (B) DJI Mavic 3 + RC + 4 batteries + charger — fits WL2005. (C) RED Komodo + 2 lenses + monitor + cables — fits WL5020. We share these at the 12h quote stage.
Top 5 mistakes we see in 2024: (1) Over-specifying size — buying WL5020 when WL3812 fits. (2) Choosing by price alone. (3) Skipping IP certification. (4) Ignoring latch type. (5) Not requesting lot certificates. All five add up to a 2-3x higher TCO over 5 years.
For alternatives: soft padded bags (¥50–200, $7–30) are cheaper but offer no real protection and last 6 months. Aluminum hard cases ($80–300) are heavier, prone to denting, and 2–4× the price. Carbon fiber cases ($300+) are overkill for 95% of B2B use cases. Our PP/PC engineering cases hit the sweet spot: 90% of the protection of aluminum at 30% of the weight and 50% of the cost, with 10-year typical service life.
Ordering Long leak-proof-3-layer-case Wholesale is 5 steps: inquiry (12h response), quote (with recommendation), PO + 30% deposit, production (35 days + QC photos), balance payment + shipment. Repeat orders are 15-20 days. Custom OEM/ODM adds 25-30 days for mold.
Our spec sheets include the manufacturing tolerance, not just the nominal value. That is what real engineers ask for.
Established 2014. 13,000 sqm factory in Fusha Industrial Park, Zhongshan, Guangdong. 12 production lines, 60+ injection molding machines, 100+ employees, 20+ patents. Monthly capacity 80,000 units. Annual export revenue 8M+ USD to 47 countries.
Direct from the OEM. Unlike trading companies or sourcing agents who add 15–40% markup and disappear after delivery, KeXinMaterials handles everything in-house: mold development, injection molding, foam CNC cutting, QC testing, export documentation. Our 2024 buyer survey showed 87% repeat-order rate and 0.3% defect rate across 47 countries.
| Quantity | Unit Price | Discount | Lead Time | Sample |
|---|---|---|---|---|
| 50-99 pcs | USD 15.08 | — | 20 days | Free (pay shipping) |
| 100-199 pcs | USD 13.34 | 5% off | 25 days | Free (pay shipping) |
| 200-499 pcs | USD 11.60 | 10% off | 30 days | Free (pay shipping) |
| 500-999 pcs | USD 10.44 | 15% off | 30 days | Free (pay shipping) |
| 1000+ pcs | USD 9.28 | 20% off | 35-45 days | Free (pay shipping) |
Reference price for WL2305 (230×180×45 mm). Custom sizes, colors, foam add 5–30%. Quote valid 30 days.
Long leak-proof-3-layer-case Wholesale: WL Series Specs Comparison
Visual summary of the key specifications. Print-friendly for buyer reference.
📹 60-second factory + product walkthrough. Long leak-proof-3-layer-case Wholesale dimension comparison, foam cutting precision, factory QC line
Standard wall thickness is 3.0-3.5mm. The 3mm walls pass IP67, the 3.5mm walls pass IP68. Wall thickness is measured at 4 points on every production batch and recorded in the lot certificate.
We use a stainless steel pin hinge (3mm diameter for small, 5mm for large) rated for 10,000 open/close cycles. Hinge caps are molded into the case body, not screwed on. The hinge pin is removable for foam service.
Standard foam set is 25mm base + 10mm convoluted lid foam, CNC-cut to 0.5mm tolerance. Total foam thickness 35mm. Custom foam thickness available: 15-50mm base, with or without anti-static (ESD) treatment.
Standard: IP67 (submersible 1m / 30 min). Premium: IP68 (submersible 5m / 30 min) available for select models with reinforced seals and pressure valve. All IP tests performed by SGS, TUV, or Intertek at our lab in Zhongshan.
Engineering-grade polypropylene (PP) for standard, PP + glass fiber (PP+GF) for heavy-duty. We also offer ABS, PC+GF, and PA66+GF30 for specific applications. Material certification included with every shipment.
Free 5-day prototyping. ISO 9001 factory-direct. Ships to 47 countries.