You are reading a single comment by @ThePeginator and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
ThePeginator
gbj_tester
I'd guess at some form of polyethylene, as it's self-lubricating under pressure. Same stuff they use to make gas pipes and milk bottles.