Key Specifications / Parameters Part Number: 12B7100X132 Product Type: Gasket Set (includes at least the bonnet gasket and the seat ring gasket) Intended Valve Rating: High pressure (Class 2500) service in the Fisher HP/HPA valve series Material / Construction: The valve manual notes gasket sets for HP/HPA use “N06600/Graphite” for CL1500 and for CL2500 a corresponding set (which the X132 suffix indicates) — thus likely a nickel alloy (e.g., N06600) winding with graphite filler or equivalent high‐performance gasket material Fitment: Typical for valve sizes NPS 1 (as per spare parts table) in the valve series; the table lists 12B7100X132 for “2 (std)” CL2500 valves (globe/angle) for HP and HPA valves Application: When servicing or replacing major sealing surfaces (body/bonnet, seat ring) in HP/HPA valves in demanding service (high pressure, high temperature)
