---
product_id: 340515168
title: "Thetford Corp 36663 Toilet Seal Lube & Conditioner"
brand: "thetford"
price: "$111.96"
currency: USD
in_stock: true
category: "Thetford"
url: https://www.desertcart.us/products/340515168-thetford-corp-36663-toilet-seal-lube-and-conditioner
store_origin: US
region: United States of America
---

# Universal RV & marine compatibility Prevents waste buildup for smooth operation Silicone-based, petroleum-free formula Thetford Corp 36663 Toilet Seal Lube & Conditioner

**Brand:** thetford
**Price:** $111.96
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your RV throne flawless — because smooth seals mean smooth journeys!

## Quick Answers

- **What is this?** Thetford Corp 36663 Toilet Seal Lube & Conditioner by thetford
- **How much does it cost?** $111.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/340515168-thetford-corp-36663-toilet-seal-lube-and-conditioner)

## Best For

- thetford enthusiasts

## Why This Product

- Trusted thetford brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Waste-Free Flow:** Prevents waste from sticking, ensuring hassle-free, smooth toilet operation every time.
- • **Dual-Use Convenience:** Perfect for both toilet seals and holding tank seals, simplifying your maintenance routine.
- • **All-in-One Seal Savior:** Works seamlessly with all permanent and portable RV and boat toilets for ultimate versatility.
- • **Seal-Deep Conditioning:** Penetrates and lubricates seals to extend their lifespan and maintain peak performance.
- • **Safe & Sustainable Formula:** Petroleum-free and silicone-based, protecting seals without harmful chemicals.

## Overview

Thetford Corp 36663 Toilet Seal Lube & Conditioner is a silicone-based, petroleum-free liquid designed to lubricate and protect seals in all RV and marine toilets, both permanent and portable. It prevents waste buildup, prolongs seal life, and can be applied to both toilet and holding tank seals, ensuring reliable, smooth operation on every trip.

## Description

Thetford's RV Toilet Seal Lube & Conditioner is a perfect solution for prolonging the life of your toilet and holding tank seals. The product is formulated to penetrate the seal, conditioning and preventing it from deteriorating. You can use RV Toilet Seal Lube & Conditioner on RV and marine permanent toilets and on portable toilets. Toilet Seal Lube & Conditioner prevents waste from sticking, ensures smooth toilet operation, and is petroleum-free. Highlights: VERSATILITY: Thetford's RV Toilet Seal Lube & Conditioner works with all permanent or portable toilets found in RVs and boats FUNCTIONALITY: Penetrates the toilet seal, lubricating and conditioning it UTILITY: Helps prevent waste from sticking, ensuring smooth toilet operation CONVENIENCE: Toilet Seal Lube & Conditioner can be used on toilet seals and on holding tank seals SAFETY: The petroleum-free, silicone-based formula is safe on seals, prolonging their life

## Features

- [VERSATILITY]: Thetford's RV Toilet Seal Lube & Conditioner works with all permanent or portable toilets found in RVs and boats
- [FUNCTIONALITY]: Penetrates the toilet seal, lubricating and protecting
- [UTILITY]: Helps prevent waste from sticking, ensuring smooth toilet operation
- [CONVENIENCE]: Toilet Seal Lube & Conditioner can be used on toilet seals and on holding tank seals
- [SAFETY]: The petroleum-free, silicone-based formula is safe on seals, prolonging their life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002NSU0ZW |
| Best Sellers Rank | #73,028 in Automotive ( See Top 100 in Automotive ) #3 in RV Toilet Additives |
| Brand Name | Thetford |
| Container Type | Bottle |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,611) |
| Global Trade Identification Number | 00028985366638 |
| Item Form | Liquid |
| Item Weight | 748 g |
| Manufacturer | Thetford |
| Model Number | 36663 |
| Number of Items | 1 |
| Part Number | 36663 |
| Recommended Uses For Product | Marine |
| Size | 1 stück (1er Pack) |
| Special Features | Not_Performance_Used |
| Specific Uses For Product | RV/Marine |
| Surface Recommendation | Toilet |
| UPC | 028985366638 |
| Unit Count | 24 Milliliters |

## Product Details

- **Brand:** Thetford
- **Item form:** Liquid
- **Specific uses for product:** RV/Marine
- **Surface recommendation:** Toilet
- **Unit count:** 24 Milliliters

## Images

![Thetford Corp 36663 Toilet Seal Lube & Conditioner - Image 1](https://m.media-amazon.com/images/I/518FWRGL-7L.jpg)

## Questions & Answers

**Q: I question whether 6 ounces is needed to lube the seal. It seems that pouring in just enough to completely cover the bottom of the bowl would lube it.**
A: I'm sorry to say this stuff was garbage. It was easier to just go buy a new seal than to waste the $ on this. Didn't even work a little bit.

**Q: do i pour in while the toilet has water in it or should the seal be dry?**
A: Pour in with no water. Make sure valve is closed. Pour about a 1/4 of container if I remember correctly and leave overnight. Fixed my seal. Hasn't leaked since

**Q: Can it be used with valve lube or is this the same thing**
A: The two products are compatible with one another and serve two different purposes. Toilet seal works in the bowl to keep the flush valve functioning . Valve lube goes straight into the blackwater (poo) tank and ALSO in the greywater (sink&shower) tank to prevent problems with the seals that keep the drain valves operational. I use both as preventive maintenance.

**Q: Does this work for the seal on  cassette toilets?**
A: This is not a sealant.  It is simply advertised as a lubricant for sliding toilet parts.  If you're using it as such....it should work

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-13*