Stopcock parts and components give stopcocks a wider range of uses. Stopcock plug assemblies are also produced to replace parts in existing lab equipment. Plastic replacement stopcock parts and components, when paired with a stopcock, are often used in conjunction with separatory funnels, Schlenk flasks and burettes.
Use in aqueous solutions and nearly all organic solvents commonly used in liquid chromatography of macromolecules. Cytiva Life Sciences™ O-rings are made of nitrile rubber.