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The 325T yellow equipment tire seal ring is a genuine SINOTRUK HOWO component engineered to provide a leak‑proof seal between the tire bead and the wheel rim on heavy‑duty vehicles and yellow equipment. As a critical element of the trusted Sinotruk howo parts family, this seal ring ensures reliable tire inflation pressure, preventing air loss and maintaining vehicle stability under extreme loads. Manufactured from high‑grade nitrile rubber with a distinctive yellow identification stripe, the 325T unit withstands high temperatures, ozone, and abrasion encountered in mining, construction, and off‑road applications. Its precision‑molded profile guarantees a perfect fit on standard military and commercial wheel rims, making it essential for safe and durable tire performance.
Yellow Equipment Tire Seal Ring
Уплотнительное кольцо шины
Anillo de sellado de neumático
The 325T seal ring is precision‑molded from a proprietary nitrile rubber compound formulated for extreme durability in off‑road and military environments. Its distinctive yellow color allows for quick visual identification during assembly and maintenance. The cross‑section is engineered to create a tight seal between the tire bead and rim flange, compensating for minor irregularities while maintaining a positive lock under high inflation pressures.
Each 325T ring is 100% inspected for dimensional accuracy, hardness, and tensile strength. The material is tested for resistance to ozone, UV radiation, and petroleum‑based contaminants. This rigorous quality control guarantees that the seal ring provides reliable, long‑lasting performance, preventing slow leaks and sudden deflations that could lead to vehicle downtime or safety hazards.
The table below provides detailed technical data for the genuine SINOTRUK HOWO 325T yellow equipment tire seal ring. These specifications are essential for verifying compatibility.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | 325T | SINOTRUK HOWO Original Code |
| Product Name | Yellow Equipment Tire Seal Ring | Tire bead seal |
| Material | Nitrile rubber (NBR), yellow pigmented | Ozone & oil resistant |
| Inner Diameter (nominal) | 520 mm (20.5″) | Fits standard heavy‑duty rims |
| Cross‑Section Diameter | 10 mm | ±0.3 mm |
| Hardness (Shore A) | 70 ±5 | Optimized for sealing |
| Temperature Range | -40°C to +120°C | Continuous operation |
| Maximum Inflation Pressure | 8 bar (116 psi) | Suitable for heavy‑duty tires |
| Applicable Wheel Types | 20″ to 24″ split rims, military & commercial | Check rim profile |
| Identification Color | Yellow | Easy visual verification |
| Included Components | Seal ring only | Valve stem sold separately |
The 325T tire seal ring is used on a wide range of SINOTRUK HOWO vehicles and yellow equipment, including military trucks, heavy‑duty dump trucks, wheel loaders, and graders. It is designed for split‑rim and multi‑piece wheel assemblies where an O‑ring or seal ring is required to maintain tire pressure. The distinctive yellow color identifies it as a genuine heavy‑duty component, ensuring that the correct part is used during tire service.
In off‑road applications, tires are subjected to extreme flexing, heat, and contact with sharp objects. A failed seal ring can cause rapid deflation, leading to vehicle immobilization or accidents. The genuine 325T ring provides the durability needed to withstand these harsh conditions, maintaining a secure seal between the tire and rim. It is also used in retreading operations and as a standard replacement part during tire changes on Howo vehicles and yellow equipment.
When installing a new seal ring, inspect the rim for damage or corrosion. Lubricate the ring with soapy water or a recommended tire mounting lubricant. Ensure the ring is seated evenly before inflating.
Correct installation of the 325T seal ring is critical to ensure leak‑free performance and safe tire operation. Follow these steps:
Deflate the tire completely and remove it from the rim. Clean the rim groove and bead seat thoroughly, removing any rust, old rubber, or debris. Inspect the rim for cracks or damage.
Apply a thin film of tire mounting lubricant to the new 325T ring. Position it carefully into the rim groove, ensuring it is not twisted. Mount the tire onto the rim, taking care not to pinch the seal.
Inflate the tire slowly to the recommended pressure and check for leaks using soapy water. If bubbles appear, deflate and reseat the ring. Never exceed the maximum inflation pressure.
A worn or damaged seal ring can cause slow leaks or sudden deflation. Common signs that replacement is needed include:
If any of these symptoms are observed, immediate replacement with a genuine 325T seal ring is recommended. A compromised seal can lead to rapid deflation, posing a serious safety risk, especially in off‑road or high‑speed applications.
The precision‑molded profile and high‑quality NBR compound ensure a perfect seal, maintaining tire pressure for extended periods and improving fuel efficiency.
Resistant to ozone, UV, and temperature extremes, the 325T ring lasts significantly longer than generic alternatives, reducing tire maintenance frequency.
Designed to original dimensions, the seal ring fits perfectly, ensuring proper tire seating and eliminating the risk of blowouts caused by improper sealing.
To maximize the service life of your 325T tire seal ring, follow these best practices:
By adhering to these guidelines, you ensure that the 325T ring performs optimally throughout its intended service interval.
Aftermarket tire seal rings are often made from recycled rubber or inferior compounds that quickly harden, crack, or lose elasticity. The genuine 325T is manufactured to the exact specifications of the original equipment, using virgin NBR with precise control over hardness, tensile strength, and elongation. Each ring is batch‑tested for ozone resistance and compression set, guaranteeing that it will perform exactly as the original part.
By choosing authentic SINOTRUK HOWO parts, you protect your investment and ensure your vehicle maintains its safety, reliability, and resale value. The Sinotruk howo parts catalog includes a full range of wheel and tire components engineered for maximum durability. For fleet managers and owner‑operators who demand the best, the genuine 325T is the only responsible choice.
The 325T tire seal ring is used on a wide range of SINOTRUK HOWO vehicles and yellow equipment, including the 5‑ton and 3.5‑ton military trucks, as well as commercial models with 20″ to 24″ split rims. It may also be compatible with other heavy‑duty brands using similar rim profiles. Always verify the rim diameter and groove dimensions using the service manual.
Each 325T is individually packaged in a sealed plastic bag with a label indicating the OEM number and identification color. The package includes the seal ring only; valve stems and rim hardware must be ordered separately.
Production of the 325T takes place in ISO/TS 16949 certified facilities, using precision compression molding and in‑process cure monitoring. Statistical process control ensures that dimensional variations are kept to a minimum. Every batch is accompanied by a material certificate and hardness test report, guaranteeing that the rings delivered are identical to those fitted on new Howo trucks at the factory.
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