Tech Tips and Know-How

All About X-Rings and O-Rings for Foam Dart Blasters

Posted by Roboman on

At the heart of every spring or air-powered dart blaster, you rely on a few tiny pieces of rubber to keep air precisely where you want it. These seals can be tricky for even the most seasoned designers, and there's much confusion surrounding proper sizing and groove design. Much of the information here is based on specifications from the Parker O-Ring Handbook, and I've included some hobby-specific information as well.    What's an O-ring? An o-ring, as the name implies, is an o-shaped ring of rubber, plastic, or metal, typically with a circular cross section. They're used to seal joints and moving parts...

Read more →