Yes, you can breathe a sigh of relief.Well all, I learned somthing new today! Never ever have I heard of this, After years of researching oil and reading post on here. I’ve never seen a string used in the construction of filters. Now I know different, what I thought was a unicorn is infact a common manufacturing technique. Thank you all for being kind and letting me know it’s not a failed assembly of the filter.


Thanks for posting the pics anyways. Filter looks good.