Of all the unmodified nylons, Nylon 101 is the strongest, most rigid and has one of the highest melting points. It is commonly specified for screw machined electrical insulators and food contact parts.
It is stocked in both natural and black. Other colors are available on a custom basis. Nylon 101 natural is FDA, USDA, 3A-Dairy and meets the compliance to requirements of NSF/ANSI standard 61.
Nylons can absorb up to 7% (by weight) water under high humidity or submerged in water. This can result in dimensional changes up to 2% and a corresponding reduction of physical properties. Proper design techniques can frequently compensate for this factor.