Review on Optimized Marinco 30 Amp & 50 Amp Sealing Rings by Timothy Weems

The ring on my 50A cord has completely snapped after 18 years of use. This replacement is perfect. It differs from the original in that the original is screwed. This block is locked. I don't think the fit is that tight but it should work. For anyone interested. My 50 amp Marinco cord has a yellow plug on the end. The part around the end of the fork is flared slightly to prevent the plastic ring from coming loose. This expanding part is made of soft rubber and can be manipulated to slide the old ring off the new ring. It is not necessary to disassemble the fork. Recommended!