If it is dry where you are doing this you can use a product called JB WELD!!! It will seal it up like no other as long as it is dry and has one day to cure!!! I used it on a cracked sump pump and it works like new!!! Good luck!
What Is The Best Adhesive/epoxy/plastic Repair Product To Use To Fix Cracked Plastic Tub In My Washing Machine. I Tried A Inexpensive Epoxy And It Worked For About A Week.Then The Adhesive Peeled Away From The Plastic.?
Ct1 the unique sealant and adhesive is perfect for this job.It can be applied on wet surfaces and will remain flexible it has been used several times before for that application.