Rotor Seal, 6 port, Rear Back Catalog number: CTS-21164 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21192 Cartridge, BioAcquity, I2V Price on request 11-4121 Ceramic Plunger Holder Assembly, LC-10ADvp Price on request CTS-5669 Oil Seal Price on request