7mm Aftermarket 24-700 tube (WSO or others) - Anyone try 'em ?

[Seacraft]

7mm Aftermarket 24-700 tube - specifically the WSO (can't believe I'm thinking of this) tube - anyone use one? Are they OK and water proof?

 

I'm tempted to go new (over $200 if you can find one) but my existing gen tube doesn't have much thread left and I wanna go swimming.

 

I have 703 crowns & tubes but trying to stay original to a late 60's sub and I have a good 700 crown.

[dropbear2008]

I am using the Yuki one. Seems OK.

[jmb]

Yuki or Clark are fine...

[bones]

I used the Phong 700 crown + tube on a recent build and it was a pain in the ass. Bloody expensive as well at $200 including shipping.