Broke pressure relief valve

The part printed on it is actually S-200-G will part # SX200G work as a replacement?

Got the part! The fellow who installed my liner and my pool steps had one. He told me to come by his house tonight and I could pick it up. He refused to let me pay for it. Said it was from a filter he removed and was going to throw it away anyway. I would mention his name but he doesn’t advertise, doesn’t even have a Facebook page. He’s one of these old school guys, only way I knew about him and the only reason he fixed my pool was because his nephew and my son are friends and former teammates on the high school football team. Everybody who owns a pool needs an old school PB in their lives. I broke it trying to replace the o ring. I ordered the o ring that Hayward had listed as the replacement o ring and it didn’t seem to work. I over tightened it and broke it trying to stop the water from spewing out. Put the old flat o ring back on. I have no idea what o ring to replace this with now. Also not going to mess with it until the extras come in from Amazon.