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Filter support collars are ideal for supporting glass funnels, Gooch crucibles, Büchner funnels, and other filtration devices. The rubber collar forms a gas-tight seal during vacuum filtration. The collars are available in three sizes.

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Product Details

Ideal for supporting glass funnels, Gooch crucibles, Büchner funnels, and other filtration devices. The soft and flexible rubber forms a gas-tight seal during vacuum filtration. • Size 3 fits a 250-mL filter flask. 31-mm top diameter, 16-mm bottom diameter • Size 4 fits 500-mL and 1000-mL filter flasks. 39-mm top diameter, 22-mm bottom diameter • Size 5 has a 50-mm top diameter, 30-mm bottom diameter