Key Specifications / Parameters Specification Detail Part Number RGASKETX212 Product Type Full‑capacity gasket set (body/bonnet + seat ring gaskets + shim) Compatible Valve Series Fisher Type E (E‑Body) control valves Typical Fitment Size 4″ nominal size Construction Materials Inconel (or similar alloy) winding with graphite filler (metal/graphite construction) Service Temperature Range From approximately –325 °F (‑198 °C) up to +1100 °F (≈593 °C) Typical Dimensions in Kit Bonnet gasket OD ≈ 6.09 in; Spiral gasket OD ≈ 5.56 in; Seat‑ring gasket OD ≈ 5.47 in Application Maintenance/repair of body/bonnet and seat ring sealing surfaces in heavy‑service valves
