Nylon PA12 is one of the most widely used SLS materials. It is a tough, versatile plastic with low moisture absorption and good chemical resistance for durable functional parts.
Nylon PA12 (polyamide 12) is a tough, well-balanced engineering plastic. It is strong enough for functional parts when thick, yet flexible in thin sections for snap-fits and living hinges. It absorbs very little moisture (among the lowest of any nylon), has good chemical resistance, and begins to soften under load at around 85 °C.
Parts are slightly porous and not watertight by default, so it isn't a reliable choice for holding liquids or gases under pressure.
Nylon PA12 is well suited to functional prototypes, snap-fit enclosures, living hinges, and end-use parts like clips, ducts, and brackets.