| Tire Size | 4.00-8 |
| Outer Diameter | ~400 mm (16 inches) |
| Width | ~100 mm |
| Material | Polyurethane Foam (Solid) |
| Tread Pattern | Cross Pattern (standard) |
| Type | Flat Free · Puncture-Proof · Zero Maintenance |
| Hub Type | Ball Bearing / Steel Bushing |
| Brand | TGum — Heavy-Duty Industrial Grade |
| Certification | ISO9001, CE, TUV, SGS |
| MOQ | 500 pcs |
| FOB Price | US $0.55 – $0.85 / pc |
| Delivery | 15-30 days |
| OEM / ODM | ✓ Supported |
| Sample | ✓ Available on request |




The 400-8 Solid PU Foam Flat Free Wheel is our TGum-branded heavy-duty solution for industrial and construction applications. With a 16-inch outer diameter and puncture-proof polyurethane foam construction, this wheel eliminates the #1 problem with pneumatic wheels — flats. Whether you're moving materials across a construction site or pushing loaded wheelbarrows through rough terrain, the 400-8 delivers consistent, maintenance-free performance.
The TGum brand stands for Heavy-Duty Industrial Grade — engineered for extreme conditions with maximum load capacity and wear resistance. Featuring a classic Cross tread pattern for balanced grip on mixed surfaces, this wheel is the go-to choice for contractors, farmers, and material handling operations that demand zero downtime. Ball bearing hubs come standard for smooth rolling; steel bushing options are available for cost-sensitive applications.
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