| 摘要 |
A cap ( 1; 51 ) for an NMR sample tube ( 52 ) having an inner bore ( 3 ) for receiving an open end ( 54 ) of an NMR sample tube ( 52 ), wherein the inner bore ( 3 ) has a narrowing for sealing a received NMR sample tube ( 52 ) against the cap ( 1; 51 ) along the outer periphery of the NMR sample tube ( 52 ), is characterized in that the narrowing is designed as an inner sealing lip ( 4 ). The cap provides good sealing between the cap and the NMR tube, and the cap can be produced from a plurality of materials, in particular, materials with good chemical resistance to NMR solvents.
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