Metering device Seal Back Catalog number: 11-3830 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21164 Rotor Seal, 6 port, Rear Price on request 11-4048 PEEK™ Needle Seal, SIL-30AC, SIL-30ACMP Price on request CTS-21171 Rotor Seal, H-Assy, 6 Port 2-Position Price on request