Sapphire Plunger Back Catalog number: CTS-11434 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10597 Wash Tube Seal Kit, 4/pk Price on request CTS-10758 Pump Seals, High Pressure Price on request 11-3889 Needle Seat Assembly, 0.12mm ID Price on request