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Cone-shaped rubber seals for filter flasks, in various sizes.
They can be autoclaved at 121 °C. Maximum heat tolerance: 150 °C. Duran brand.
Under the code 51.2920200, a series of 8 pieces from 22 to 84 mm can be ordered.
Separating funnel, conical, with plastic stopper, PTFE or glass key, made of heat resistant borosilicate 3.3 glass
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