Purpose and benefit Reusable rubber stoppers designed to seal bottles, tubes, and other containers in both laboratory and household settings. Provide a reliable, leakproof seal to prevent liquid loss and protect the contents from contamination. Help maintain the stability and safety of reagents, samples, beverages, and fluids during storage, transport, or use. Key attributes Material: durable rubber construction for flexible sealing and repeated use. Function: acts as bottle stopper, tube/test tube stopper, drain plug, or replacement seal for tumblers and small tanks. Compatibility: fits common laboratory bottles, chemical reagent containers, household bottles and tubes; suitable wherever a tight plug or seal is needed. Performance: dependable leakproof seal that minimizes spills and evaporation while keeping contents secure. Why customers need this Prevents leaks and spills that can damage work surfaces, equipment, or belongings. Keeps liquids and reagents protected from air and contaminants, extending sample and product integrity. Reusable design reduces waste and replacement frequency compared with tape or singleuse coverings. Practical use scenarios 1. Laboratory use: seal reagent bottles and sample tubes to prevent contamination and evaporation during storage and transport. 2. Household use: worn seals on tumblers, bottle tops, or hot water tank openings to stop drips and maintain a tight closure. 3. Field or workshop: plug small drains or openings temporarily to prevent leaks while moving or storing liquids. Care and handling Clean and inspect before reuse to ensure the seal remains intact. Store away from sharp objects and extreme heat to preserve rubber flexibility and sealing performance. A straightforward, reusable solution for reliably sealing containers in lab and home environments.