So, I'm an occasional pumper, but when I do pump, I tend to do long sessions, which can start to be really uncomfortable on the pubic area where the jar pushes into you. I've never bought a dedicated tube or seal, I've just always used jars and tried a few things (plumbers tape, rubber weatherproofing edging) to try to cushion the edge of the tube.
Recently though, I bought some of this stuff, a strip of NBR foam with a tight "U" cross-section, designed to baby-proof the edges of glass furniture:
https://www.amazon.com/dp/B01AXFG0KA?ps ... ct_details It kind of seemed like the perfect product for homemade jar pumping.
I put some of it on the lip of a 5qt OXO cookie jar (
https://www.target.com/p/oxo-pop-5qt-ai ... nk=sametab), adhering and sealing it with some waterproof silicone sealant, and gave it a shot last weekend.
It ended up being a HUGE breakthrough. I had previously rarely ever gotten above 15", but within just about 2.5 hours in the jar (5 30-minute sessions with about a 10-minute break between each), I had gotten up to
18"! By far the biggest I've ever gotten.
The lack of abdominal discomfort I guess let me push into harder vacuums and just generally left everything relaxed. I did have pretty ideal pumping conditions -- it was warm; I had exercised earlier in the day and drank a ton of fluids and electrolytes to keep my lymph circulating; also popped a Robaxin, a Canadian OTC muscle relaxer, which probably helped keep things loose. But even so, the size and the speed with which I got there really took me by surprise.
The only downside of the foam seal is it tends to get a "grippy" texture when wet, which makes extracting from the jar once you've gotten as big as I was pretty difficult.
I also ended up having a lot of soreness in my sack itself over the following week - I might have pushed a little too hard, and adding 3" in diameter above your previous max in one session is probably more than is healthy. I actually ended up having some weeping that night (which I knew people got from saline, but I'd never heard of someone getting from just pumping). Now I know better to take it a little easier, but I really didn't think it was possible to get that big that fast.
Anyway, for other jar-pumper, homemade seal folks out there: give the products above a shot. I think you'll surprise yourself.
