Dual sealing ring connectors

A dual sealing ring connector comprising:

• a first resilient sealing ring (1);
• a second resilient sealing ring (2) partially embedded in the first resilient sealing ring (1);
• characterized in that
• the dual sealing ring connector comprises a holding portion (10) and an inserting portion (20);
• the inserting portion (20) is shaped to correspond to the holding portion (10) and embedded into the holding portion (10);
• the inserting portion (20) comprises a joint head (200), a joint rod (201), and locking tabs (202);
• the joint rod (201) extends in a radial direction, an axial direction, or a circumferential direction;
• the joint head (200) is arranged at the end of the joint rod (201) and has a shape that is mirror-image symmetrical along an axis of symmetry of the joint rod (201);
• the locking tabs (202) are arranged on both sides of the joint rod (201) and are spaced apart from the joint rod (201) by a distance;
• and
• the locking tabs (202) extend in the same direction as the extension direction of the joint rod (201), and its length in the extension direction is less than ⅔ of the sum of the lengths of the joint head (200) and the joint rod (201) in the extension direction of the joint rod (201).