Intermediate rings do not contain a sieve medium (wire cloth / perforated plate) and are used as an extension to increase the height of a sieve column to match the minimum required height for a particular sieve machine. Stainless steel intermediate rings are available with a sieve depth (H₁) of 32 or 50 mm.

All Blau-Metall test sieves are shipped with a standard PVC sealing ring that allows operation of the sieve in a temperature range of 15 to 100 °C. The PVC O-Rings can be easily replaced and are available for separate order as replaceable parts. If required, Blau-Metall sieves can be fitted with a VITON sealing ring that is resistant against solvents and enables use of the sieve up to temperatures of 200 °C.

Beads made of a rubber material are often used as a sieving aid during screening by placing them onto the sieve medium of all or individual sieves within a column to help speed up the sieving process by interacting with the sample material and freeing blocked apertures.