How to Insert an O-Ring into a Tattoo Machine

The O-ring in a coil tattoo machine might look like a small, forgettable part, but it plays a big role in how smoothly your machine runs. Positioned between the front spring and the armature bar screw, the O-ring helps maintain the correct spring tension and absorbs vibration, giving the machine a more stable and consistent performance.

When the machine runs without a proper O-ring, it can sound rattly and uneven. Add the ring, and you'll notice a smoother hum and more reliable operation.

🎥 Watch the video below for a quick demonstration.

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Why the O-ring matters

Over time, O-rings wear out, stretch, or lose shape — especially with regular use. A worn O-ring throws off the angle between the spring and the armature bar, affecting how the machine hits and how consistently it runs.

Here's why you should keep them fresh:

• A tight, fresh O-ring helps stabilize the machine's movement.

• A worn-out O-ring becomes loose, compromising the machine's angle and vibration control.

• They're cheap and quick to replace — most artists swap them weekly or biweekly.

Quick tips

• Always have a pack of spare O-rings on hand.

• Replace your O-ring every 1–2 weeks, or sooner if it starts to stretch.

• Don't ignore changes in sound — rattling or buzzing could mean it's time for a new one.