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

Also known as starboard, these sheets and bars won’t degrade when exposed to salt water, humidity, and UV light.

Made of recycled HDPE plastic, these sheets are more sustainable and economical than standard marine-grade moisture-resistant HDPE sheets.

Made of Tyvek, these tags withstand mild acids and alkalies. Write on them with a permanent marker.