Check the listing for details. 10PK Rubber Stoppers, Solid - 18mm Bottom, 21mm Top, 26mm Length - Eisco Labs. Condition: New. Listed at 10.49 USD. 10PK Rubber Stoppers, Solid - 18mm Bottom, 21mm Top, 26mm Length - Eisco Labs Pack of 10 stoppers made of superior quality, solid rubber. Orange color and tapered shape. Each stopper measures 26mm in length, has a base diameter measuring 18mm, and a top diameter measuring 21mm. Ideal for bottles or flasks with a 19-20mm opening. The durable, rubber construction is suitable for use with chemicals. Resistant to acids, alkalis and ammonia. Easy to clean - dishwasher safe. Stable at temperatures between -20?C - 70?C. Stoppers are designed for use in professional laboratories, but are perfect for a variety of applications in the home and garage. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. Product Details BrandEiscoManufacturerEiscoProduct TypeScience Lab Rubber StoppersMpnCH0314F SOLID RUBBER STOPPERS || Pack of 10 stoppers made of superior quality, solid rubber. Tapered shape. Orange color.MEASUREMENTS || Each stopper measures 26mm in length, has a base diameter measuring 18mm, and a top diameter measuring 21mm. Ideal for bottles or flasks with a 19-20mm mouthCHEMICAL RESISTANT || The solid rubber construction is suitable for use with acids, alkalis and ammoniaDURABLE || Durable for long time use. Easy to clean - dishwasher safe. Stable at temperatures between -20?C - 70?CDESIGNED FOR PROFESSIONAL LABORATORIES || These stoppers are designed for use in professional laboratories, but are perfect for a variety of applications in the home and garage Check out my other items. -Powered by