Features: Easy to use: Replacement part for reservoir valve gasket, makes the lid sit tighter and not fall off while lifting the lid to add water or get tips, keep with factory pressure, don't let the water stain and residue reduce factory setting pressure, these gaskets work well and are easy to install. Compatible model: It can be compatible with WP250, WP260, WP270, WP300, WP305, WP310, WP100, WP112, WP113, WP115, WP117, WP-900, WP130, WP140, WP900, VAVA, H2o and so on Specification: Material: silica gel Color: black Note: Recommend to check the model number for better compatibility before purchg. Recommend to change your gasket every 3 months for hygiene issue and efficiency. This is a compatible spare part and the part numbers have been mentioned above for reference purposes only.