Went to gold n sand web sight ,shows them but cant seem to oder them.
All my suction tubes use the same principle but instead of sandwiching rubber like you see in the plumbers pipe test plug you simply use a rubber ball sandwiched between two washers on threaded stock. They last almost an eternity...as you can simply tighten them as needed on occasion.
Bejay
If you have the old ones you can soak them and reform them.
I was going to get new ones after letting them set a few seasons
called and talked to Red he said he could send new ones but being leather they should last a lifetime.
he told me to soak them a few hours or over night then shape them a little then put them a little ways
into the tube let the set for another night then pull them out and check them
make sure the nuts are tight, wipe a little vaseline on where they slide, worked out great for me, and still working good.