Plunger Seal, Black Back Catalog number: CTS-7162 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11010 515 Performance Maintenance Kit Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-10475-1 Sapphire Plunger Price on request