Stainless Lids for Liquid Culture and Grain Jars

ProLid professional series wide mouth stainless steel mason jar lids are engineered for reliable repeated use and lasting durability. Designed to make hundreds of runs through the autoclave or pressure cooker. ProLids offer a combination of unique features, not found anywhere else. Made of 304 Stainless Steel metal to prevent the rusting of standard metal lids. A solid one-piece design and construction makes them simpler to use and clean. The silicone seals are fitted to the lids so they don't fall out.