The Leybold D2.5E Vacuum Pump – Rebuild Kit #0347 contains all gaskets, O-rings, vanes, and wear parts necessary to fully rebuild a Leybold D2.5E rotary vane vacuum pump. Performing a scheduled rebuild restores the pump to factory vacuum depth and pumping speed, ensuring reliable, deep-vacuum performance on VTA and UIC wiped-film distillation systems. Using OEM-specification rebuild kits ensures correct material compatibility and dimensional fit. Recommended when the pump no longer achieves target vacuum depth or exhibits excessive noise or vibration.