Does EZ Coupler Cap for RV Waste Valve part # F02-3106BK Seal Completely
Updated 05/18/2026 | Published 03/23/2026
Question:
My gray water valve leaks by. Looking for a positive seal until I can get it in the shop. I bought a replacement cap and it drips. Will this seal completely?
asked by: Lory
Expert Reply:
Hey Lory, yes the EZ Coupler Cap for RV Waste Valve part # F02-3106BK that you referenced does seal completely once installed so if you are looking for a replacement that will stop the leak this would be it! do you have a 3 inch valve that needs to be replaced as well?
Bob
3/27/2026
This cap allows you to easily secure the cap tightly. Caps don’t leak, seals leak - always clean and dry the seal, then apply a light coat of silicone o-ring lube.
Mike
3/27/2026
It does seal completely! The bonus is that it is so much easier to take off and put on !! Mines been on over a year now with no issues!
Jameson C.
3/30/2026
Bruce
3/27/2026
I like the cap, it was bought as a replacement for one that fell off. The handle is nice and it fits tight. I didn’t have a valve issue and so I don’t know if it will stop leaks but it is tight; I haven’t noticed any seepage.
Robert A.
3/27/2026
This cap works great. I have arthritis in my hands and this cap is much easier to get on and off. And, more sanitary.
Product Page this Question was Asked From
EZ Coupler Cap for RV Waste Valve w/ Handle and Gray Water Drain - Black
- Accessories and Parts
- RV Waste Valves
- Sewer Caps
- EZ Coupler
more information >
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on Accessories and Parts
Stan G.
3/27/2026
I replaced the factory black water cap with this new cap . The factory cap was difficult to remove even using wrenches . EZ Coupler works great the handle gives you leverage to install and remove ...... NO LEAKES . Quality product ....