The invention pertains to a cassette (2) comprising a product conveying path (1, 1a, 1b) and a shut-off device (19a, 19b) integrated into the cassette for interrupting a product flow. The shut-off device is arranged at a rim of the cassette such that the shut-off device (19a, 19b) can be directly operated manually and/or mechanically. The product-conveying path (1, 1a, 1b) leads through the shut-off device (19a, 19b). The cassette consists of a lower part (5) and an upper part (7) which are connectable to each other by connecting means (9, 11, 13, 15).