Best storage bottles for 4% HCL

Greetings,

I just joined and this is my first attempt at producing a DIY product. I recently bought a quart of 37% which arrived in a plastic bottle with 2 clear bags tywrapped around it. I've yet to disturb it but apparently it is gassing off as there's condensation now in the bags. So I need to get the ball rolling and I guess the best thing to do is just dilute the entire quart. I didn't realize the rather large quantity I'd end up with at first. But we intend to use it for bathing, etc so perhaps it won't go to waste. I'm assuming that storage becomes considerably easier once diluted to 4%. So I'm looking at a final volume of around 2 gallons to bottle up.

I believe I have a case of flip top 16oz beer bottles stashed from the home brewing days. They have the usual porcelain tops with red rubber seals. So I'm wondering if a source exist for replacement Viton seals. I did some research and that's about the only rubber rated for HCL. My question is will the 4% damage the existing red rubber seals over say a year storage? Are there any common bottles that are known to be stable storing this?

Many thanks in advance,
DD