Trane PLU00949 Replacement Plug 1.438-18 UNEF-2A For Chiller & Screw Compressor – HVAC Refrigeration Spare Parts

The Trane PLU00949 plug adopts a 1.438-18 UNEF-2A ultra-fine tooth thread design, with a tight pitch and deep tooth profile. After assembly, the contact surface is large, and its sealing performance far exceeds that of ordinary coarse-threaded plugs. It can effectively prevent the leakage of refrigeration oil and refrigerant from the shell interface. The thread accuracy is processed according to the original factory standards, and it fits tightly with the unit shell, oil tank, oil filter seat, etc., ensuring smooth installation without slippage or jamming. During disassembly and maintenance, it can be reused. The material has high strength, good pressure resistance and vibration resistance, and can adapt to the pressure fluctuations and vibration environment of the water-cooled chiller for long-term operation. It is not prone to deformation or cracking. The overall structure is compact and lightweight. A single piece can complete the sealing, and a separate sealing gasket is not required to form a reliable seal. It is an ideal accessory for chiller maintenance, oil circuit sealing, and interface protection.