卡環體又稱卡環肩，為連接卡環臂、支托和小連接體的堅硬部分，環抱于基牙的非倒凹區，從鄰面包過頰舌軸面角，可阻止義齒齦向和側向移動，起穩定和支持義齒的作用，同時支撐卡環臂，因而要求大連數控加工卡環體要有較高的強度，不易變形，位于非倒凹區，且不影響咬合。

口環：也叫密封環，安裝于泵蓋緊靠葉輪起到密封作用。

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.