Is unlikely to be broken (especially if vinyl) (6)
I believe the answer is:
record
'vinyl' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for record that I've seen before include "that has been cut" , "Tape" , "Witness" , "Person's conduct to date" , "Note, register" .)