Pen O-ring Set 2 sets * 5 pcs

Complete guide: Pen O-ring Set 2 sets * 5 pcs

This product is a set of spare parts for pen-style tattoo machines: 10 o-rings total, divided into two sizes — 5 pieces with diameter 24 mm and cross-section thickness 1.1 mm, and 5 pieces with diameter 21 mm and cross-section thickness 1.4 mm. They are universal o-rings, with standard sizes used by multiple pen brands, not the original certified Cheyenne parts. It is intended for tattoo artists who perform preventive maintenance on their own machine and want to have spare o-rings on hand for the internal mechanism.

How to use

1. Turn off the machine and disconnect it completely from the power source before any work on the internal mechanism.
2. Remove the worn o-ring from the machine and compare it with the two sizes in the set (24 mm × 1.1 mm or 21 mm × 1.4 mm), possibly measuring it with a caliper for precision.
3. Carefully disassemble the pen machine's housing/cap according to the manufacturer's instructions to access the o-ring seat.
4. Remove the old o-ring from its groove without forcing it or using sharp tools, to avoid scratching internal components.
5. Wipe the groove with isopropyl alcohol and let it dry to remove old lubricant residue.
6. Install the new o-ring from the set, in the correct size, placing it evenly in the groove without twisting or excessive stretching.
7. Reassemble the machine housing and visually check that everything is seated correctly before restarting.
8. Test the machine with no needle attached to check stroke smoothness and absence of vibrations or abnormal noises.

Tips from us

• Check carefully which of the two sizes in the set matches your machine before installation — an o-ring that is too small or too thick can come out of the groove or affect the mechanism's stroke.
• If the machine mechanism uses multiple o-rings, it is advisable to replace them all at once, not just the visibly worn one, because those that look 'good' may be close to the end of their lifespan.
• Signs that replacement is needed: increased vibrations, unusual noise from the mechanism, and loss of stroke smoothness.
• If you have a Cheyenne machine, first check the dedicated Cheyenne set, calibrated exactly for those models — this set is a universal solution for other pen brands with standard sizes.
• Store the remaining o-rings from the set in a clean bag or box, protected from dust, heat, and chemicals, until the next replacement.
• Note down the o-ring size that fits your machine, so that on future orders you know exactly which variant you are looking for.

Frequently asked questions