English to Russian Tech/Engineering Food & Drink Уплотнение вала

Purge consumption may drop below 14 litres/minute (½ scfm) if all joints and interfaces are air tight and the seal faces have seated.

Пояснение заказчика:

This is not a typo.

It means that the faces of the seal have had a chance to come together in their final position, in contact with one another. The seal is made up of two halves. It will only be airtight when the 2 halves are properly aligned and fully in contact.