... ejection of the part, a mold release agent can be sprayed onto the surfaces of the ... Delrin, Hostaform, Lucel Strong, rigid, excellent fatigue resistance, excellent creep resistance, chemical resistance, moisture resistance, naturally opaque white, low/medium cost ... Nylon) PA6 Akulon, Ultramid, Grilon High strength, fatigue resistance, chemical resistance, low creep, low friction, almost opaque/white, ...