The MistKing Bulkhead O' Ring & Plug set, specifically designed for 1/4 inch fittings, is an essential accessory for maintaining the integrity and efficiency of MistKing misting systems. This set includes a high-quality O' ring and a plug, ensuring a secure and leak-proof seal at the connection points, which is crucial for the effective operation of any misting setup. Ideal for both repairs and upgrades, these components are vital for hobbyists and professionals using MistKing systems in terrariums, greenhouses, or other environments requiring precise humidity control.