Yeah, I thought so... This would be a little on the hard side to incorporate into tube, if not ovesized. I know something like this is not so good, bu just adding another O between center and outer ring might make it a little stronger on holding water not going throug backwards. Although, added restriction comes in the way...
I just got inspired by the heart (human or animal) blood valves, so if anybody got those artificially made, go for it...
Sorry, this just got too morbid...
Back on the bright side
