Rotor Seal, 2-Groove Back Catalog number: CTS-21163 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-21262 Needle, Uncoated 20 Series Price on request 11-4179 HPV Rotor, SIL-30AC, SIL-30ACMP Price on request