facing ring meaning in Chinese
衬片环
垫圈，垫片
螺栓垫圈
Examples
- Face ring leakage flux
正面漏泄通量 - Face ring flux
正面通量 - Use " w " to express seat facing ring material which process directly by valve body , when seat and discsealing material are different , use low hardness material symbol to express ( except diaphragm valve )
注：由阀体直接加工阀座密封面材料用" w "表示，当阀座和阀瓣（闸板）密封材料不同时，用低硬试验材料代号（除隔膜阀外） 。