Product review (3 stars): Like many others my seal was too large
Like many others my seal was too large.  It was necessary to cut and sew it back together.  I'm a fix-it guy, not a tri-lobal gasket fabricator but it worked well despite my poor sewing skills.  The included adhesive was more than enough for the job and seems to be holding without failure.  I suggest holding the gasket in place with tape while you apply glue otherwise the gasket may bunch up at the end and the glue sets fast, no second chances.