Face Seals, 4/pk Back Catalog number: CTS-10989 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10984 Sparge Diffuser Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request CTS-11313 PEEK™ Rotor, LPV Price on request