Flap 1 : A circular strip of rubber or fabric-reinforced rubber used in pneumatic tyres to prevent chafing of the inner tube on the rim. Quite commonly known in New Zealand as a 'Rustband'
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}