Rancilio threaded washer 23121001

What the washer in a coffee machine does

A washer is a small metal component placed under the head of a screw or nut. Its job is to spread pressure over a larger surface, protect the surface of the part from damage, and prevent the joint from loosening on its own due to vibrations, which are common during coffee machine operation.

Signs of wear

If the washer is damaged, corroded, or missing, the joint may gradually loosen. This can show up as a loose part, faint knocking or squeaking, an uneven fit of the cover or component, or leaking water or steam at a spot that should be sealed.

When it's time for a replacement

A worn or missing washer won't stop the coffee machine on its own, but a weakened joint will eventually lead to greater wear on the screw, nut, and the part it holds in place. Replacing it with a new washer is a simple and inexpensive way to avoid a bigger repair.

How to choose the right one

Washers differ in size and type (flat, toothed, and similar), so it's important to choose the one that matches the specific location of use. Check the suitable type and size in the compatibility table on the product page.

Compatible with

• S20 (VERS2)
• BASIC-D (20130620-)
• BASIC-M (20130620-)
• CLASSE-7 (2008-)
• CLASSE-7-S-14 (20150211-)
• CLASSE-7 (20141021-)
• BASIC-D (20191204-)
• BASIC-M (20191204-)