Trying to match this size?
- If you like to work in inch sizes, 13:17 is the closest metal size match for H18 rubber.
- If you prefer to work in millimeters, 5M17 is the closest match.
The aspect ratio for H18 rubber rings is 4.17
inner diameter = 5mm (roughly 13/64″)
“wire” size = 1.20mm (0.047″)
A few examples using H18 rubber rings:
Happy (stretchy) chainmailling!