3/8" Female Sealing Cap Plug Compatible with Select Comfort Sleep Number Air Chamber Male Connector

My sleep number chamber has two o-rings, will this work?

I added this cap to my mattress and the air mattress leaked out. It was holding with the pump much longer. Should I try a new oring

My mattress has two o-rings on the hose fitting. Will this valve work?

Can it be removed or is it permanent?