Sucker Rod Pump Plunger is another important part of sucker rod pump, we supply the sucker rod pump plunger as per API 11AX Specification. In order to improve the wearing and corrosion resistance performance, we can supply the plunger with Monel pin end, Ni-cu pin. The nominal diameter is 1-1/16" to 4-3/4", the maximum length is 34ft.