onebto
Fish Herder
I get that you ended up finding your hose adapter was the problem. I hope my hint helped there. The many posts that I see about using a seal lubricant seem to me to indicate a weakness in the original design of filters. I have only been using Rena canister type filters for 7 years now but have yet to use any form of seal lubricant on my filters. My guess is that filters that require some form of seal lubricant have a design flaw. Properly designed filters should not require any particular seal lubricants.
A weakness in the original design? You maybe correct
Really its a failure of the manufacturer to point out to customers that the O rings need lubricating I have never seen any instructions on the fluval and Tetratec I have.
I have always added lubricant to my O rings because through my profession and experience it will extend the O rings life. There are very few applications were using a lubricant will either be dangerous or to the detriment of the O ring or the equipment involved.
I am sure that in the case of your rena's which I have no experience they are obviously using better quality O rings or they have looked into there design a little better than others allowing for more accurate tolerances in design and manufacture so your dry O rings are not wearing as the ring is compressed which is usually the problem with O rings not just in this application but many others.
I must say though by your experience of Rena's next time I need to buy a new canister filter I am going to look into getting one of those
Are they quiet?
Regards onebto