Honda does not sell the gaskets separately. This is fact. The "Honda" gaskets you see on eBay are counterfeits.
You have a few options here. One of them is to buy the whole solenoid assembly (around $150-160 from Majestic) and use just the top half and the new gaskets. This is what Honda's TSB recommends.
You could also try the counterfeit gaskets. Some have had luck with them, others haven't.
You could also use the aftermarket gaskets/assemblies. Again, some have had luck with them, some haven't.
And just to clarify, this is not a VVT solenoid, it's not a VTEC solenoid, and it's not a VTC solenoid. It's just an oil control valve for VCM.
You have a few options here. One of them is to buy the whole solenoid assembly (around $150-160 from Majestic) and use just the top half and the new gaskets. This is what Honda's TSB recommends.
You could also try the counterfeit gaskets. Some have had luck with them, others haven't.
You could also use the aftermarket gaskets/assemblies. Again, some have had luck with them, some haven't.
And just to clarify, this is not a VVT solenoid, it's not a VTEC solenoid, and it's not a VTC solenoid. It's just an oil control valve for VCM.