Needle Seal, PEEK™ SIL-20 Back Catalog number: CTS-11315 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3795 Sapphire Plunger w/Holder Price on request CTS-10584 Ceramic Plunger Assembly Price on request CTS-10391 Plunger Wash Seal Price on request