Vac-U-Lock by Doc Johnson

 

The Vac-U-Lock system is a patented, interchangeable adult novelty coupling mechanism created by Doc Johnson. It allows a single compatible sex toy attachment to easily pop on and off various bases. This system completely eliminates the need for restrictive, standard O-rings typically used in strap-on setups.

How the Mechanism Works
  • The Base Plug: The system utilizes a specialized, rigid plastic or metal plug found on the anchor device.
  • The Toy Socket: Compatible toys feature a deep, molded cylindrical cavity at their base.
  • The Vacuum Lock: Pushing the toy down onto the plug forces out the trapped air. This action creates an airtight internal vacuum that securely locks the toy into place during motion.
  • Easy Removal: Twisting the toy while pulling releases the internal air seal, detaching the toy effortlessly.