- ADDRESS:Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com


In the demanding environment of heavy‑duty truck chassis, every seal matters. The genuine WG2203100254 O‑Ring (26500170 Gb3452.1) is a precision‑engineered component designed to maintain airtight and fluid‑tight connections in critical systems. As part of the trusted Sinotruk howo parts family, this O‑Ring delivers uncompromised sealing performance under extreme pressure and temperature. Manufactured to strict OEM tolerances, the part ensures that your SINOTRUK HOWO remains leak‑free and reliable in the harshest operating conditions.
The O‑Ring with OEM number WG2203100254 is a small yet vital chassis component used in pneumatic, hydraulic, and fuel systems of SINOTRUK HOWO trucks. It conforms to the Chinese national standard GB3452.1, guaranteeing precise dimensions and material consistency. Whether sealing a connection in the air brake system or preventing oil leaks in the power steering, this seal provides a reliable barrier against leaks, contamination, and pressure loss. It is engineered from high‑grade NBR (Nitrile Butadiene Rubber) with excellent resistance to mineral oils, fuels, and coolants, making it ideal for the demanding environments found under the truck.
The WG2203100254 O‑Ring is manufactured to the exact inner diameter (26.5 mm) and cross‑section (1.70 mm) as specified by SINOTRUK engineering. This precision ensures a perfect compression fit in the groove, eliminating spiral failure and extrusion.
Made from NBR 70 Shore A, this sealing ring offers outstanding tensile strength, tear resistance, and flexibility. It maintains its sealing properties from -40°C to +120°C, suitable for global operations.
| OEM Part Number | WG2203100254 (cross reference 26500170 / Gb3452.1) |
| Product Name | O-Ring (Rubber Seal Ring) |
| Brand | SINOTRUK HOWO – Genuine |
| Inner Diameter (d1) | 26.5 mm (±0.15 mm) |
| Cross‑section Diameter (d2) | 1.70 mm (±0.08 mm) |
| Material | NBR (Nitrile Butadiene Rubber) 70 Shore A |
| Tensile Strength | ≥ 12 MPa |
| Elongation at Break | ≥ 300% |
| Compression Set (22h / 100°C) | ≤ 25% |
| Operating Temperature | -40°C … +120°C (peak +140°C) |
| Hardness | 70 ±5 Shore A |
| Color | Black (standard industrial grade) |
| Weight (approx.) | 0.6 g |
| Standard | GB3452.1-2005 |
| Application | Chassis pneumatic systems, brake valves, fuel lines, hydraulic fittings |
The WG2203100254 O‑Ring is used extensively across SINOTRUK HOWO truck models. It can be found in:
Typical models using this O‑ring include SINOTRUK HOWO A7, T7H, ZZ4257, ZZ1167, and most heavy‑duty trucks equipped with common‑rail diesel engines. Always verify the groove dimensions before installation – the WG2203100254 is designed for a standard 1.70 mm cross‑section groove.
To ensure a leak‑free seal, follow these steps when installing this O‑ring:
Using genuine WG2203100254 O‑rings eliminates the guesswork of aftermarket “universal” kits. The precise material and dimensions guarantee a proper seal even under high vibration and thermal cycling.
Routine inspection of chassis seals can prevent costly downtime. Check the WG2203100254 O‑ring whenever you service the corresponding system. Signs of wear include:
Replace the O‑ring immediately if any damage is visible. Using the truck with a deteriorated seal can lead to system failure, fluid loss, and secondary damage to expensive components. Always replace with genuine SINOTRUK HOWO parts to maintain system integrity.
Aftermarket O‑rings often use inferior rubber compounds that harden too quickly or have incorrect dimensions, leading to premature leaks. The WG2203100254 O‑Ring is manufactured under strict quality control using NBR compounds approved by SINOTRUK. It resists ozone, UV, and fluid degradation, ensuring a tight seal for hundreds of thousands of kilometers. By choosing the genuine part, you protect your HOWO’s chassis systems and avoid unscheduled repairs. For fleet managers, this translates to higher vehicle uptime and lower operating costs.
Summary: The SINOTRUK HOWO O‑Ring with OEM number WG2203100254 (26500170 Gb3452.1) is a small but essential chassis component. Its precise dimensions, high‑quality NBR material, and rigorous testing make it the ideal choice for sealing applications in pneumatic, fuel, and hydraulic systems. Always insist on genuine WG2203100254 to maintain the safety and reliability of your heavy‑duty truck.
For more than two decades, SINOTRUK HOWO genuine parts like this O‑ring have proven their durability in extreme conditions worldwide. Trust the original – trust the orange box.