This special rubber sealing ring is customized for Bafang M420 and G322 torque sensing mid drive motors (36V / 48V, 250W), essential maintenance spare part for motor disassembly overhaul and leakage troubleshooting.

✅ High-quality oil-resistant nitrile rubber, wear-resistant, anti-aging, adapts to long-term high-speed rotation friction

✅ Precision dimensional manufacturing, close fit with motor shaft and housing, no loose clearance

✅ Dual functions of oil sealing and waterproofing, effectively lock internal gear lubricant, block rainwater, silt and dust entering the gear box

✅ Good compression resilience, stable sealing effect under temperature fluctuation

✅ Plug-and-play replacement for aging, cracking and hardened old sealing rings, no secondary modification needed during maintenance

Suitable for oil leakage repair and routine overhaul of Bafang 250W torque mid drive electric bicycles, spare parts stocking for overseas repair shops, and after-sales supporting maintenance for finished e-bikes.