Both designs incorporate an outer centering ring. The CGI model adds an inner ring to reinforce the winding on the process side. Some product catalogues designate this dual-ring configuration as CGIR. Always verify your flange specifications and standard requirements with our technical team.

No. These are standard commercial trade names for physical designs. ASME B16.20 and EN 1514-2 define the dimensional, material, and marking requirements for gaskets falling within their respective scopes.

A design featuring a centering ring (such as CG or CGI, depending on the manufacturer's designation) is typically recommended. The final selection depends on the applicable standard, flange class, process fluid, and inner ring requirements.

Flexible graphite is frequently specified for steam and compatible high-temperature thermal services. While PTFE can be suitable for select chemical media, it involves distinct thermal thresholds and engineering requirements. Material selection is evaluated on an application-by-application basis.

For an ASME assembly, verify the flange standard (B16.5 or B16.47) and ensure the gasket complies with ASME B16.20. For EN 1092-1 metric flanges, EN 1514-2 specifies spiral wound gasket dimensions up to DN1000, subject to its defined scope.

There is no universal maximum pressure or temperature rating that applies to all valve and seal designs. Performance limits depend on materials of construction, process media, flange type, operating temperatures, and bolt torque. Class and PN ratings do not replace thorough, application-specific service validation.

Please specify the flange standard and facing, nominal size (NPS or DN), pressure class (ASME or PN), service media, design pressure and temperature, specified materials, quantities, as well as any certification or marking requirements.

Yes. For products in stock at our Quebec facility, orders confirmed early enough can be prepared and dispatched the same day. Delivery lead times within Quebec and across Canada depend on the destination and the carrier. Inventory availability and delivery schedules are confirmed with every request.