ZHANXUBIO GL25 GL32 GL45 Screw Caps With Pouring Rings | PBT & PP Laboratory Bottle Caps With Silicone Seals

Lab folks, listen up! These ZHANXUBIO screw caps are perfect for your media bottles. Available in GL25, GL32, and GL45 sizes with your choice of polypropylene (handles up to 140°C) or PBT material (good for 180°C). They come with silicone seals that create an awesome tight closure to prevent spills and evaporation. The pouring ring design makes transferring liquids super clean and drip-free. Whether you're doing cell culture, storing chemicals, or just need reliable bottle closures, these have you covered. They're chemical-resistant, can handle autoclave sterilization, and just make lab life easier. The 2-pack or 5-pack options give you plenty of backups for your most-used bottles.