Hydrant nozzle cap spacer

A nozzle cap spacer for a hydrant nozzle cap comprising:

• a spacer body defining an outer body edge, the spacer body defining a spacer body thickness;
• and
• a resilient first spacer spring arm extending from the outer body edge and biased away from the spacer body in an extended orientation, wherein the first spacer spring arm defines a first spring arm thickness;
• wherein:
• the first spring arm thickness of the first spacer spring arm is equal to the spacer body thickness of the spacer body;
• a slot is defined between the first spacer spring arm and the outer body edge;
• in the extended orientation, a width of the slot increases towards a distal arm end of the first spacer spring arm;
• the distal arm end is opposite a proximal arm end of the first spacer spring arm;
• the outer body edge defines a length (La) corresponding to the first spacer spring arm;
• an inward step is formed at a distal length end of the length (La);
• and
• a body recess is formed in the outer body edge along the length (La).