Advantages
Unit‑style Integrated Structure
One‑piece assembly protects the primary sealing lip. It is easy to install with low risk of lip damage during fitting. High structural rigidity resists hub deformation and reduces the risk of premature leakage.
Spring‑loaded Primary Sealing Lip
The spring holds tight against the shaft surface for point‑contact sealing. It minimizes shaft interference and compensates for minor shaft wear and run‑out. Sustained sealing pressure is maintained under heavy‑load bumpy conditions to prevent lubricant leakage.
Temperature Resistance & Material Performance
Constructed from NBR nitrile rubber. Operating temperature range: ‑40℃ ~ +107℃. Optimized for hub oil‑bath lubrication, it withstands high hub temperatures and resists gear oil and hub lubricant. The rubber material resists hardening and cracking.
Leak‑stop Ribs on Inner & Outer Diameters
Ribbed rubber on both inner and outer diameters: inner‑diameter ribs suppress shaft‑side leakage; outer‑diameter ribs improve housing bore fitting, block muddy water, dust and grit from entering bearings, protect hub bearings and extend service life.
Suitable for Heavy‑Duty Operating Conditions
Specially designed for oil‑bath wheel‑end seals of semi‑trailers and heavy‑duty trailer axles. Resists muddy water, grit and road impact. OE‑equivalent with excellent interchangeability. Abundant aftermarket replacements enable easy repair and replacement.
Dual‑Protection Design
Internally retains hub lubricant to avoid oil leakage; externally prevents muddy water and dust ingress into bearings. It lowers risks of bearing burnout and wheel‑end failures, reducing roadside breakdown probability.
