This Joint Stopper is made from high-quality Borosilicate glass 3.3, known for its excellent thermal and chemical resistance. Designed as a hollow glass stopper, it fits securely into standard joints, ensuring a tight seal in various laboratory glassware applications. The stopper is ideal for preventing contamination and maintaining the integrity of experiments.
Key Features:
- Material: Borosilicate glass 3.3 for durability and resistance to thermal shock.
- Design: Hollow glass construction for a lightweight and secure fit.
- Compatibility: Fits standard joints, providing a reliable seal.
Usage:
- Suitable for use in laboratories to seal glassware such as flasks and bottles.
- Ideal for chemical experiments, preventing air or moisture ingress.
Attention:
- Handle with care to avoid chipping or breakage.
- Ensure proper fit to prevent leaks or spills.






Henning André Lilleng (verified owner) –