Gold Plunger Seal Back Catalog number: 11-4133 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-5656 Sapphire Plunger Price on request 11-3321 Wash Seal Gasket, 6/pk Price on request CTS-21095 Seal Wash (0.0787 ID, Fixed, Bio), 2/pk Price on request