Rubber Cork With Hole

Rubber corks with a pre-formed hole are specially engineered for applications where access, ventilation, or insertion of tubing is needed without compromising the sealed environment. These hollow rubber corks are commonly used in laboratory settings, where they serve as stoppers for test tubes, flasks, or bottles that require gas exchange or the insertion of glass or plastic tubing. The flexible rubber ensures a tight seal around tubing while the cork granules provide structural support and compressibility, maintaining a stable closure even when the stopper is pierced. This design allows for flexibility in scientific setups, making them ideal for fermentation systems, distillation apparatus, or cell culture flasks. In industrial setups, rubber corks with holes can act as feedthroughs for sensors, wires, or fluid lines, offering both an airtight seal and a passage. Their resilience ensures they return to shape if tubing is removed and reinserted. Moreover, because they resist chemical exposure and maintain elasticity, they remain functional even under repeated cycles of insertion and removal. This combination of sealing performance and adaptability makes hollow rubber corks a trusted choice for scientists, engineers, and manufacturers alike, particularly when customized to specific diameters or hole configurations is required.