They probably have anything you could want. If you can find it. What a miserable website. I have to buy 600 .1uf@1000 volt caps to get one. I never did find a 9.1 Megohm resistor. They call them strange names. All I wanted was a 1-watt regular old carbon composition resistor. I got some of my stuff, but not what I need to move on. What a miserable outfit......
Senior moment question. To make a .1uf@1000 volt coupling cap, I can connect two .1uf@630 volt caps in series, can I not? I'm not going to buy 600 of anything...

Connected in series, I double voltage. Connected in parallel I would double capacity with the same voltage, right? And don't I remember seeing some TV repair videos where the factory paralleled resistors of different values to make one of a certain value? I need to fabricate a 9.1 megohm resistor out of more commonly available resistors. Maybe something AES would have. Their resistor stock only goes to 8.2 megohm. They are high, but they are local and I can save shipping. That will give me a good excuse to eat at Ted's Hotdogs. They are semi-on-the-way.
In fairness, Mouser has millions of items. In even more fairness, giving the benefit of the doubt, I don't know how one would organize such a large inventory and make it searchable. But neither does Mouser, apparently. Why can't you just search for what you want instead of all that brand/envelope/temp nonsense that I have no idea what they want for information. Surely there is a better way....

I haven't failed. I've just found 10,000 ways that won't work.....Thomas Alva Edison