Practically nonabsorbent, HDPE won't swell when exposed to moisture. It is denser and more rigid than LDPE, plus it's more chemical resistant.

An economical alternative to Delrin® acetal resin, this acetal copolymer offers similar wear resistance.

Because this polypropylene resists swelling when exposed to water, it’s often fabricated into containers and parts for laboratory equipment.

This cast nylon 6 material is easier to machine than other types of nylon. It’s comparable to Nylatron and Nycast.