459 Graphite Manway Gasket

Chesterton 459 is a live-load, graphite-filled manway gasket engineered for reliable, long-term sealing in demanding industrial conditions. Designed for easy installation and consistent flange pressure, it delivers superior compliance to surface imperfections and strong resistance to creep relaxation over time.

Ideal for heavy-duty applications—such as petrochemical, power, and general industrial plants—this gasket handles high temperatures, high pressures, and aggressive chemicals. Its graphite construction ensures excellent sealing performance, even under wide temperature fluctuations.