4" Instant-Seal Cap Set for Still Pot and Thumper (2 Caps)
Say goodbye to messy wheat and flour paste for good with this set of two 4" instant-seal caps, sized for your still pot and your thumper. You solder them on yourself and save, and from then on you get a tight, dependable seal every single run.
Each cap is made from food-grade stainless steel paired with heavy 20 oz, 22 gauge copper, and we've already bonded the copper to the stainless so the install goes easy. No more scrambling to patch a blown seal mid-run, just a cleaner, safer way to distill.
- Two 4" instant-seal caps for pot and thumper
- Food-grade stainless with heavy 20 oz copper
- Copper pre-bonded to stainless for easy soldering
- Ends the need for messy still paste
- Free U.S. shipping
✓ Solid lead-free copper · ✓ Ships free anywhere in the U.S. · ✓ Backed by our 2-year guarantee
Good to know
Mixing flour paste is the least scientific part of distilling, and this 4" instant-seal cap set lets you leave it behind for good. You get two caps, one for your still pot and one for your thumper, and once they're on you get a tight, dependable seal every single run. No more wheat or flour paste, no more guessing whether a seal will hold.
How hard is it to install a 4" instant-seal still cap?
You solder these on yourself, which saves you money. We've already bonded the copper to the stainless, so the tricky step of joining two different metals is done before the caps reach you. What's left is soldering copper to your copper. If you've never soldered a still before, contact us with questions before you start. We'd rather help up front than have you guess.
- Two caps in one set: one sized for the pot, one for the thumper.
- Mixed-metal build: food-grade stainless steel paired with heavy 20 oz, 22 gauge copper.
- No more blown seals: stop scrambling to patch paste mid-run and keep your attention on heat, vapor and cuts.
- Cleaner routine: no paste to mix, wait on or scrape off afterward.
It's a cleaner, safer way to distill, and shipping is free in the U.S. Owning a still is legal in the US. Use your upgraded rig for distilled water, essential oils or fuel alcohol, and remember that making spirits requires federal TTB permits.