Has anyone attempted to connect a 3D print to the end cap? We’re using the 6 bolts that connect the end cap to the flange on a 3" acrylic tube. The question is if anyone thinks we’ll have a sealing issue up to 200m with the added 3D print. We put on longer bolts, but we can only tighten down so tight. How tight are the bolts supposed to be to keep the seal?
Hi @LiveForLiving -
This is indeed a common technique! As long as the o-ring face seal is compressed, you shouldn’t have any issues (easy to check if you have the clear endcap and can see past your mounted part.)
Once you descend below a few meters, those bolts aren’t doing much compared to the water pressure! It does look like you’ve used potentially a bit too much grease there - were you using the molykote provided with your Blue Robotics enclosure? You may benefit from using socket-head cap screw bolts, rather than phillips head - much less risk of stripping and you can torque them more easily!
We’re using an o-ring lubricant that is a silicone grease- I imagine that is essentially the same as the provided grease? I think you’re seeing the plastic wrap still ontop of the tube in the picture, not grease. Either that or you’re seeing some putty on the wires, but that’s from a previous build. Let me know if that’s not what you think you’re seeing- as we don’t want to be over doing anything. Thank you for your help and expertise. Glad to know the 3D printed parts are a common technique. And yes- we already bought new cap screw bolts- but we only had the phillips when the picture was taken- thank you so much for looking out for us on that!