Compression Screw, SS Back Catalog number: CTS-5313 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-6613 Black Plunger Seal Price on request CTS-10566 Alliance Head Plunger Seal Kit, 2/pk Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request