about 95% of all the orings in a spyder are standard tank orings. The only one that is necessary to be factory standard is the one on the striker. It MAY work with a tank oring, but that usually causes recocking issues.
Also, Spyders use an oil lubricant (can be found at bicycle shops, paintball shops, etc.), not a grease style lubricant.
As long as your tank outputs 800psi, it'll work just fine.
If you throw up a picture of it, we may be able to help you better with the identification of your marker.