The Carrier Transicold Shaft Seal 05K is a replacement part designed specifically for HVAC and refrigeration systems. This unit, sold individually, is manufactured by Carrier and is a genuine part for their system. The model number 05K indicates that it is a specific and compatible seal designed for use in refrigerant line sets, ensuring a secure and reliable connection in the system. This product is essential for maintaining the performance and efficiency of Carrier Transicold refrigeration systems.