---
product_id: 340515168
title: "Thetford Corp 36663 Toilet Seal Lube & Conditioner"
brand: "thetford"
price: "VT14636"
currency: VUV
in_stock: false
reviews_count: 5
category: "Thetford"
url: https://www.desertcart.vu/products/340515168-thetford-corp-36663-toilet-seal-lube-and-conditioner
store_origin: VU
region: Vanuatu
---

# Compatible with all RV & marine toilets Silicone-based formula for seal longevity Prevents waste buildup for smooth operation Thetford Corp 36663 Toilet Seal Lube & Conditioner

**Brand:** thetford
**Price:** VT14636
**Availability:** ❌ Out of 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?** VT14636 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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

- • **Safe & Sustainable:** Petroleum-free and gentle on seals, protecting your investment while being eco-conscious.
- • **Dual-Use Convenience:** Perfect for both toilet seals and holding tank seals, simplifying your maintenance routine.
- • **Waste-Free Operation:** Effectively prevents waste from sticking, guaranteeing smooth, hassle-free toilet function every time.
- • **Universal Seal Savior:** Works seamlessly with all permanent and portable RV and boat toilets, ensuring no seal is left behind.
- • **Deep Penetration Power:** Silicone-based formula penetrates and conditions seals, extending their lifespan and preventing cracks.

## Overview

Thetford Corp 36663 Toilet Seal Lube & Conditioner is a silicone-based, petroleum-free lubricant designed to penetrate and protect seals in all RV and marine toilets. It prevents waste buildup, extends seal life, and can be applied to both toilet and holding tank seals, ensuring reliable, smooth operation and long-lasting performance.

## 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

Review: This is sooo good that my neighbor ran off with it (accidentally). I need to reorder more. Works great for my RV.
Review: This should stop the seal perishing over the winter when not in use

## 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 |
| Batteries | 1 Unknown batteries required. |
| Best Sellers Rank | #72,049 in Automotive ( See Top 100 in Automotive ) #4 in RV Toilet Additives |
| Brand | Thetford |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,330) |
| Date First Available | 3 August 2012 |
| Item Weight | 748 g |
| Item model number | 36663 |
| Manufacturer | Thetford |
| Manufacturer Part Number | 36663 |
| Product Dimensions | 6.35 x 4.19 x 20.96 cm; 748.43 g |

## Product Details

- **Brand:** Thetford
- **Item form:** Liquid
- **Number of Items:** 1
- **Specific uses for product:** RV/Marine
- **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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***N on 16 December 2025*

This is sooo good that my neighbor ran off with it (accidentally). I need to reorder more. Works great for my RV.

### ⭐⭐⭐⭐⭐ Review
*by R***S on 18 October 2024*

This should stop the seal perishing over the winter when not in use

### ⭐⭐⭐⭐⭐ Review
*by T***T on 1 October 2025*

Can use sparingly. No need to dump a bucket in. Just cover the seal. Rejuvenated 20yr old seal in trailer. Seals great again and slides nice.

## Frequently Bought Together

- Thetford RV Toilet Seal Lube and Conditioner - Toilet Seal Lubricant - 24 oz 36663
- Liquified RV Toilet Treatment - Black Holding Tank Digester - Odor Eliminator - Orange Scent - Matts RV Reviews (Orange, 32oz)
- Camco Tastepure RV Water Filter - New & Advanced RV Inline Water Filter with Flexible Hose Protector - GAC & KDF Filtration - Made in USA - Camping Essentials for Fresh Drinking Water (40043)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-07*