Top quality, made in UK. Made from graphtech graphite based fibre washer. Suitable for all piston ported Lambretta engines with the oval type exhaust port. These are made especially for the MGBM RT 195 and 225 kits in tandem with their big box exhausts with the four stud pattern, but will work just as well with any barrel and exhaust combination including the AF and KBAM clubman, scootopia etc. 
 
These are especially good for sealing troublesome leaks as they will squash, unlike the copper type. 
Use with Reinzosil high temperature sealant to make sure you get an airtight seal, this can be bought on our website.