JET PUMP ACCESSORIES H. Pressure Regulator Model RPR, Part No. 15496A500 Fits deep well pumps I. Well Seals Model RWS4-12, Part No. 05283A506, 4" x 1-1/4" (single pipe) Model RWS4-1012, Part No. 05212A501, 4" x 1" x 1-1/4" (two pipe) Model RWS4-1, Part No. 05283A505, 4" x 1" (single pipe) Model RWS4-1212, Part No. 05212A510, 4" x 1-1/4" x 1-1/4" (two pipe) Model RWS6-1, Part No. 05283A535, 6" x 1" (single pipe) Model RWS6-15, Part No. 05283A537, 6" x 1-1/2" (single pipe)