Shop for PBT sheets. Strong, stiff engineering plastic with excellent machining characteristics, chemical resistance, and bearing and wear properties. Unlubricated (Hydex® 4101 ) and lubricated (Hydex® 4101L) grades. Standard sizes available. Custom cuts, cut-to-size. Have machined into fabricated parts. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.