Flat Free Series

400-8 Solid PU Foam Flat Free Wheel

Name: 400-8 Solid PU Foam Flat Free Wheel
Brand: TGum
SKU: MT-400-8-TG
Availability: InStock

The MaxTop 400-8 is a 4.00-8 (16-inch) solid PU foam flat-free wheel, 400 mm outer diameter and 100 mm wide, built with our TGum heavy-duty compound for 30% higher load capacity. Puncture-proof and zero maintenance. ISO 9001, CE and TUV certified. FOB Qingdao.

“We developed TGum because standard PU foam kept failing on rough industrial floors. The 400-8 in TGum carries about 30% more load at the same size, which is why it is now our default recommendation for 16-inch equipment.”

— Dasein Yuan, Director, International Business Division

SKU: MT-400-8-TG | Brand: TGum

16" OD Flat Free Cross Pattern Heavy Duty ISO 9001 SGS

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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

Product Description

What makes the 400-8 flat-free design different?

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.

Key Features

100% Flat Free — puncture-proof PU foam construction eliminates flats forever
Zero maintenance — no inflation checks, no pressure monitoring, no tube replacement
16-inch diameter for superior ground clearance and obstacle handling
Cross tread pattern optimizes grip on mixed surfaces (dirt, gravel, concrete, asphalt)
TGum Heavy-Duty Industrial Grade — built for extreme working conditions
Ball bearing hub for smooth, low-resistance rolling under full load
Resistant to chemicals, oils, and UV degradation — outdoor-rated
ISO 9001, CE, TUV, SGS certified quality

Applications

Construction Wheelbarrows Industrial Trolleys Farm & Garden Carts Material Handling Concrete Mixer Stands Warehouse Logistics Landscaping Equipment

Applications

Where the 400-8 excels.

Heavy Industrial Carts. The 16-inch TGum 400-8 is built for demanding industrial environments — steel mills, foundries, shipyards, and heavy manufacturing. Its solid PU foam construction handles sharp metal debris, oil spills, and extreme temperatures without degradation.

Construction & Mining Support. Equipment trailers, generator carts, and compressor trolleys rely on 400-8 wheels for reliable mobility across rough construction terrain. The cross tread pattern provides multi-directional grip essential for maneuvering heavy equipment in tight spaces.

Waste Management. Dumpster carts, recycling bins, and waste container dollies. The 400-8's puncture-proof construction is invaluable where sharp waste debris would destroy pneumatic tires within days.

Airport Ground Support. Baggage carts, catering trucks, and ground support equipment use 400-8 wheels for their combination of load capacity, smooth rolling, and zero-maintenance operation. The roller bearing hub handles continuous duty cycles.

Buyer FAQ

Common questions about the 400-8.

What's the difference between 400-8 and 4.80/4.00-8 sizing?

4.00-8 is a narrower tire section width compared to 4.80/4.00-8. The 400-8 is optimized for industrial carts requiring a narrower profile, while the 480/400-8 provides a wider footprint for wheelbarrow applications. Both share the 8-inch rim diameter.

How does the TGum compound compare to standard PU foam?

TGum is our proprietary heavy-duty polyurethane formulation. It offers 30% higher load capacity, better cut resistance, and extended service life compared to standard PU foam. Ideal for environments where equipment downtime is costly.

What certifications apply to the 400-8?

ISO 9001:2015 quality management system. CE conformity for EU market access. TUV and SGS test reports available on request. Note: REACH certification is available on the SKYSTAR 480/400-8 model for regulated EU applications.