SEBO ET-C1 Washer for ELECTRONIC 370 and ET-C Power Heads — 10 Pack

Rebuilding an ET-C brush housing calls for more than one of these, so 0155ER supplies the ET-C1 washer ten at a time. The same washer is used on the ELECTRONIC 370, and singles of it are listed under 0155.

Power heads live a harder life than the bodies they attach to. Everything inside one is subject to the brush roll's vibration, and the washers backing its fasteners take that punishment continuously until they lose their flatness. Once that happens the screw above settles a fraction, clamping force drops, and the assembly starts to knock — which is usually the noise that brings the head to the bench in the first place. Renewing the washers as a set during a rebuild is a few minutes of work that keeps the head quiet for its next several years of use. Doing them piecemeal, on the other hand, means going back into the same housing twice.

Ten is the practical quantity for a shop: enough to do one head thoroughly and still have spares when the next ELECTRONIC 370 comes in with the same complaint. As with the single, order by the ET-C1 designation rather than trying to match a ring from a general hardware tin. The ET-C1 name identifies the washer by the assembly it belongs to, which is why it is the reliable way to specify it rather than measuring a worn ring and hoping for a match.

• SEBO part 0155ER — washer ET-C1, ten per pack
• Fits the SEBO ELECTRONIC 370 and the ET-C power heads
• Specific to the ET-C power-head assembly, not a chassis washer
• Pack: ten washers. Singles are stocked as 0155
• Pairs naturally with screw C 3.9 x 22 (0174ER) and carbon brush set 05095S
• Replace when: an ET-C or ELECTRONIC 370 power head knocks, or a fixing loosens repeatedly after tightening
• Genuine SEBO part from an authorized dealer; ships in 2–5 business days