190*220*30 Three-lip Oil Seal, half-rubber half-iron structure with O-ring kits for Sino Truck Rear Wheel WG9981340113

190*220*30 Three-lip half-enclosed oil seal adopts half-rubber half-iron construction with an O-ring, designed for Sinotruk Steyr axles and directly interchangeable with OE WG9981340113. Three sealing lips plus O-ring deliver multi-layer protection, retaining gear oil and blocking mud, dust and water ingress. The composite structure ensures high rigidity and tight fit, staying stable without deformation under long-term heavy loads and rough road conditions. Made of premium oil-resistant rubber, it features outstanding aging and tear resistance, maintaining durable sealing performance and lowering oil leakage failures and maintenance costs.