This washer fits the chain mounted storage cap of later Primus 210 & RM 1 pint stoves etc. It also fits the filler cap of Svea 123, Optimus 111 etc. We stock it as 2 distinct washers for ease of finding on the site but it is the same washer.
VITON OD18mm ID10mm
Cap shown not included - for guidance only
Product Code: CHRES1810 - F-D3