To stabilise glassware in water or oil baths. The vinyl coating prevents vessels and apparatus from being scratched or marked.

Flasks weighting ring(s)
Stabilising ring(s)
Flasks weighting ring(s)
Stabilising ring(s)
Flasks weighting ring(s)
Stabilising ring(s)
Flasks weighting ring(s)
Stabilising ring(s)