Protective collars, EPDM.
For filter flasks.
Special design centres the funnel and flask and provides stable support for funnels, filters and manifolds placed on them. A clean seal is made between the flask rim and container placed on it. Application of the vacuum provides a tight seal. Also provides all-round protection for glass filter flask rims, significantly reducing impact damage and extending working life.
Product Specification:
Diam.: 23 mm
Height: 11 mm
For bottles: 100 ml
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