Designed & manufactured by Trangia in Sweden, the BL25 replacement lid is manufactured and packed as a genuine OEM spare part for their world famous B25 Spirit BurnerThe twist on cap is supplied with more→an o-ring seal / washer pre-installed. Manufactured from durable corrosion resistant brass, Low maintenance & care, easy-to-clean, light-weight & simple to use, Designed & developed in Sweden, Manufactured in Sweden since 1925 by Trangia AB