Replaces your deteriorated grommet. Made of TPU material. The part is rigid with some flexibility to seal. Lead time is 2 weeks. This is a custom product. Not injection molded. Made to order. Message with any question.  As much as i would like this to be a $2 part. Its not possible unless you make it an injection molded for a bike that is 40 years old. The mold and cost of everything else will not give you a return.  My profit is Probaly $500 a year which is nothing designing this part.