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The TYSEAL 4018 is a PTFE rotolock seal gasket designed for use in refrigeration and HVAC service applications. This gasket provides a reliable seal at rotolock service valve connections, preventing refrigerant loss at critical joints. Sold in a 10-pack, the 4018 is sized for York and Tecumseh compressor rotolock fittings and is a standard item in refrigeration service inventories. HVAC and refrigeration technicians keep these on hand for compressor changeouts and rotolock valve service work.
The TYSEAL 4018 is suited for residential and light commercial refrigeration and air conditioning systems that use rotolock service valve connections. Rotolock fittings are common on Tecumseh and York compressors, making this gasket a regular requirement during compressor replacement or valve service. The PTFE material resists refrigerant and compressor oil contact, maintaining an effective seal under system operating conditions.
Compatible with York and Tecumseh compressor rotolock service valve fittings as specified in the product data.
Installation should be performed by a licensed HVAC or refrigeration technician. Recover all refrigerant and relieve system pressure before breaking any rotolock connection. Inspect the mating surfaces for nicks or debris before seating the new gasket. Do not reuse a gasket that has been compressed or shows signs of deformation.
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