Backup Seal Back Catalog number: CTS-2963 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request CTS-11366 Piston, High Pressure Price on request