4mm Rubber O-Rings (ID: 2mm) - choose color

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Pkg of 100

Outer Diameter: 4mm  Inner Diameter: 2mm

Thickness: 1mm

Aspect Ratio: 2

Material: EPDM Rubber (latex free)

For Chainmaille: Works well with 20g 3/32" Jump Rings and other small gauge Jump Rings of similar size.  This is a skinny jump ring.  Use in weaves where the connections are doubled such as European, Helm, Full Persian, Inverted Round, Byzantine etc.  Using the double weaves will increase durability is the Rubber Rings are only 1mm thick.

For leather: This size fits 2.5mm-3mm Leather.  These rings are skinny and will not stick out from the leather very far.

Other uses: All O-Rings work as gaskets or waterproof seals.  These would fit best over something around 2.5mm.  Also a good bead bumper for larger hole beads such as hand blown glass and lamp work.  These will work with body piercings and plugs or fit over wire, leather and cording.  Micro sizes for stitch markers in knit and crochet.  And these can help to seal Grommets into place.

Sizing: The ID or Inner Diameter is the size of the hole.  Generally, choose an inner diameter slightly smaller than the O-Ring needs to fit around.  The rubber will stretch to fit over items and form a strong seal or hold items in place.  

The chart shows the average AR of each jump ring when used with this O-Ring Size 

O-Ring Size AR Average AR
4mm O-Ring 2
Jump Rings
20g 3/32" 3 2.5
20g 7/64" 3.5 2.8
20g 1/8" 4.1 3.1
20g 5/32" 5.1 3.6
19g 9/64" 3.7 2.9
19g 5/32" 4.1 3