The Alphaplastik Black Conical Rubber Laboratory Stopper is engineered for reliable sealing of various laboratory vessels, including flasks, test tubes, and jars. Designed as a versatile vial cap, this stopper ensures secure closure in a range of scientific applications.
Crafted from a high-quality rubber compound, it meets GOST 7852-76 standards, offering both thermal and chemical resistance essential for demanding laboratory environments.
US: temporary delays — postal services aligning new import rules, 
EU: 1–2 weeks, 🌍 Worldwide: 1–4 weeks ✈️