Originally Posted By: ZeeOSix
Originally Posted By: martinq
Notice that one of the end-caps has debonded but I don't think it makes a difference.
It doesn't because all the pleats ends are still sealed with the glue - those pleats can't leak even if the metal end plate is gone. Plus, the leaf spring keeps it all tight together.
Yup - I agree.
Of course, (and this goes a bit off topic here so forgive me), would that logic not also apply to the dreaded OCOD? What matter of concern is a fiber endcap if the material at the end of the pleats is fully blocked by sealant? A leak is a leak, if there is a pathway, regardless of the endcap material. Conversely, a well sealed set of end-pleats really does not care what material (steel, fiber, plastic) does the job. If the sealant is fully spread across all the media so that the pleats are totally encapsulated, then there should be no leak. The endcap is there to achieve two things:
1) provide assistance to the mechanical bond of the sealant while it sets up
2) distribute the pressure load evenly across the end of the pleats
Food for thought; fodder for banter.
Sorry; back on topic now.