Originally Posted by
Maui Rhino
I bought a pair of 3L Seeker bottles a couple months ago. I also bought a 42mm sport cap from Hydrapak. Once the box arrived, I learned that, white both are 42mm, they are threaded differently, and won't seal well. After searching high and low for a quick-disconnect cap or one with a hose Barb, I finally called Hydraflask. They do not currently make a cap of that style for the Seeker. At this point, I'm considering drilling the cap, and installing my own QD hose fitting. However, they also do not currently stock replacement caps for the Seeker. The customer service rep I was speaking to was very helpful, and from the sounds of it, they're aware of the need for more caps, and for caps with hose fittings for those of us who want to use the Seeker in a gravity system.