That's nothing a little duct tape and bailing wire won't cure.
I have a lot of three-ring binders, myself. They're not the greatest solution, but they're economical. There are various grades of clasps, some are more suited to the heavy weight of stuffed negative sleeves and are priced accordingly.
Another option is to stick the regular binders inside large Ziploc bags (they make some pretty impressive sizes these days). I do that with various items if I know it's going to get dusty or wet around them.
If I knew where to get large ziploc bags to use for my big 3-ring binders, I would use them. Where are bags this big available?
I use PrintFile pages (I like them because I can make contact sheets with them quite easily) and standard 2-3" D-ring binders. I should probably consider throwing something over them to keep out dust but so far I haven't had any issues.
I make standard 8x10 contact sheets and 3-hole punch them, too. Not elegant, but works. They are easy enough to replace if they get damaged, and so far they are lasting fine.
I use the same system for my slides.
Jim MacKenzie - Regina, Saskatchewan, Canada
A bunch of Nikons; Feds, Zorkis and a Kiev; Pentax 67-II (inherited from my deceased father-in-law); Bronica SQ-A; and a nice Shen Hao 4x5 field camera with 3 decent lenses that needs to be taken outside more. Oh, and as of mid-2012, one of those bodies we don't talk about here.
I cannot recommend more the use of polyester fold-lock sleeves combined with either Printfile Ultima sleeves (they're made for the poly inserts) or archival envelopes in boxes. You lock the negative strip within a fold-lock strip and then slide *that* strip into a sleeve or place into an envelope. Do NOT slide a bare negative against or inside of "archival" sleeves without protection! Unless you're in a clean-room, you will end up with scratches.
Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.