O-Ring, PTFE Back Catalog number: CTS-00230-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-3209 Syringe Seal, 250μL/2500μL Price on request CTS-5313 Compression Screw, SS Price on request CTS-10686 Needle Seal, Vespel® Price on request