They offer excellent inherent lubricity, fatigue resistance, and chemical resistance. Acetals suffer from outgassing problems at elevated temperatures, and are brittle at low temperatures. Glass filled, and added lubrication grades are available, flame retardant grades are not. Acrylic Acrylics are amorphous polymers with excellent clarity. They are widely used in optical applications.
Acrylics also have excellent weather ability and do very well in outdoor applications.
Nylon 6 Nylons are semi-crystalline polymers with a good range of properties. Nylons are widely used because they have a good cost to performance ratio. Nylons have been compounded with reinforcements, fillers and additives to produce a very wide variety of properties. Nylon 6 has the lowest modulus of all nylon grades. Nylons are widely used because they have a good cost to performance ratio.