self-opening
self-orienting
self-packing
self-potential
self-powered
self-priming
self-propelled
self-purging
self-reacting
self-regulating
  self-releasing
self-sealing
self-seizing
self-setting
self-sharpening
self-stressed
self-stripping
self-suction
self-supporting
self-sustaining
self-unscrewing