Onoto 7.78mm (1x) & 3 Cork seals repair pack
Onoto Repair Pack
Suitable for the Standard and type 3000 pen this washer is 7.78mm diameter
The price is for 1 x washer and 3 x cork seals for a single pen repair.
A backing washer is included in the price.
In order to minimise cracking of the cork when handling, the corks have been impregnated with medical grade paraffin wax which lubricates the surface and helps the plunger rod slide easily while maintaining a seal.