Can I use a different orifice size if a #63 is not available

Robertshaw Compatibility: Direct replacement part for the widely used 1820 and 1830 series pilot burners

but never use a capacitor with a lower voltage than 370V

3 Amps at 120VAC

Copeland Comfort Control (White Rodgers) F92-0228 Seal Kit Can I use a differentThe White Rodgers F92 0228 Seal Kit is a field serviceable solution designed specifically for 1 inch 1300 series hydronic zone valves. As a direct OEM replacement water seal kit, it provides the necessary internal components to address leaks at the valve stem, preventing moisture damage to the actuator or surrounding boiler components. This kit is engineered for compatibility with 1 inch models, including the 1311 103, 1311 132, 1315 103, 1361 103,