Dometic CTS‑3110/CTS‑4110 Cassette Toilet Inlet Seal – Genuine Replacement 242601421

This genuine Dometic cassette inlet lip seal (Part No. 242601421 / 850‑01789) is designed specifically for use with CTS‑3110 and CTS‑4110 cassette toilets. The main inlet seal ensures a snug, leak-free fit between the cassette and toilet housing for smooth sliding and proper flush operation. Highly recommended to replace when worn, swollen, or causing seal failure. Lubricate annually with silicone grease (not petroleum-based) to maintain flexibility and prevent swelling.

 Key Details:

• Compatible Models: Dometic CTS‑3110 & CTS‑4110 cassette toilets (also suits Saneo range)

• Part Number: 242601421 (also known as 850‑01789 or 2426015406)

• Weight: ~40 g; lightweight and easy to handle

• Care Tip: Lubricate with silicone grease (e.g. OKS1110 or OKS1111); avoid petroleum jelly which can cause seal swelling and jamming