卡环体又称卡环肩，为连接卡环臂、支托和小连接体的坚硬部分，围绕于基牙的非倒凹区，从邻面包过颊舌轴面角，可阻止义齿龈向和侧向移动，起稳定和支持义齿的作用，同时支撑卡环臂，因而要求大连数控加工卡环体要有较高的强度，不易变形，位于非倒凹区，且不影响咬合。

口环：也叫密封环，装置于泵盖紧靠叶轮起到密封作用。

The clasp body, also known as the clasp shoulder, is a hard part that connects the clasp arm, support bracket, and small connector body. It surrounds the non inverted concave area of the base tooth and passes through the buccal lingual axis angle from the adjacent surface, which can prevent gingival and lateral movement of the denture, stabilize and support the denture, and support the clasp arm. Therefore, it is required that the Dalian CNC machining clasp body has high strength, is not easy to deform, is located in the non inverted concave area, and does not affect bite.

Mouth ring: also known as sealing ring, installed on the pump cover close to the impeller to provide a sealing effect.