A worn or cracked sewer gasket is one of the most common causes of sewer odor and slow seeping leaks around the dump valve outlet on an RV waste system. Lippert part 2024121190 gives you two fresh replacement gaskets so you can restore a proper airtight seal quickly, without hunting down odd-lot hardware at a local plumbing store. These are the same seals used in Lippert-supplied waste system assemblies found on hundreds of Forest River, Coachmen, Keystone, and other OEM-brand coaches.
Sewer gaskets sit between the dump valve body and the termination fitting or elbow on your RV's black and gray tank drain. Over time, UV exposure, chemical cleaners, and repeated heat cycling cause the rubber to harden, crack, or deform. Once that seal fails, you get two problems: a steady sewer odor that works its way into the coach even when the valve is fully closed, and a slow weep of tank fluid around the fitting every time you dump.
Replacing the gasket is a five-minute job that requires no special tools -- just pull the old seal out of the groove, press the new one in, and you're done. Lippert part 2024121190 ships two gaskets per pack, so you have a spare for the second valve (most coaches have separate black and gray dump valves) or for the next service interval.
One pack covers both the black tank and gray tank dump valve outlets on a typical two-valve RV waste system.
Direct replacement for Lippert-supplied dump valve assemblies used across hundreds of Forest River, Coachmen, Keystone, and Jayco floor plans.
Restores the compression seal between the valve body and termination fitting, blocking sewer gas from migrating into the coach.
Press-in groove fit. No adhesive, no clamps, no cutting. Swap out in under five minutes at the campsite or in the driveway.
Lippert Components is the OEM supplier for slide-out mechanisms, axles, and -- relevant here -- waste management hardware on the majority of North American-built towables and motorhomes. Their dump valve assemblies follow a standardized 3-inch termination diameter that matches the industry-standard RV bayonet fitting used by Camco, Valterra, Rhino, and virtually every sewer hose on the market.
The gasket in this 2-pack seats in the valve outlet groove of Lippert's standard blade-style dump valves. If your rig left the factory with Lippert waste components -- which is highly likely if it was built by Forest River, Coachmen, or Keystone in the last decade -- these are the correct replacement seals.
Inspect the sewer gasket at least once per season, or any time you notice one of these warning signs:
No professional service required. Here is the basic process:
Full-time RV residents put far more cycles on their dump valves than weekend warriors. If you dump weekly or more often, plan to inspect gaskets every six months and keep a spare pack on hand. The Lippert 2024121190 pack is small and light enough (0.14 lbs, fits in a 7.75 x 5.5 x 0.75 inch package) to tuck into your parts bin without taking up meaningful storage space. Seasonal campers who winterize should inspect and replace gaskets as part of spring de-winterization to catch any damage caused by freeze-thaw cycles.