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.

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.

do i pour in while the toilet has water in it or should the seal be dry?

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

Can it be used with valve lube or is this the same thing

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.

Does this work for the seal on cassette toilets?

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

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Thetford Corp 36663 Toilet Seal Lube & Conditioner

Product ID: 340515168

Details

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

🚐Universal RV & marine compatibility

⚙️Prevents waste buildup for smooth operation

🛡️Silicone-based seal protection

379.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Description

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

WASTE STICK DEFENSE - Stops waste from adhering, ensuring hassle-free flushing every time
DUAL USE CONVENIENCE - Perfect for both toilet seals and holding tank seals—one bottle, double protection
ALL IN ONE SEAL SAVIOR - Works seamlessly with all RV and portable toilets, plus marine models
DEEP PENETRATION POWER - Lubricates and conditions seals to prevent cracks and leaks
SAFE SUSTAINABLE FORMULA - Petroleum-free, silicone-based for long-lasting seal health without harsh chemicals

Thetford Corp 36663 Toilet Seal Lube & Conditioner is a premium silicone-based lubricant designed for RV and marine toilets. It penetrates and conditions seals to prevent deterioration, stops waste from sticking, and extends seal life with a petroleum-free formula. Compatible with all permanent and portable toilets, it ensures smooth, reliable operation and protects both toilet and holding tank seals.

Specifications

ASIN	B002NSU0ZW
Best Sellers Rank	#75,591 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 (4,629)
Global Trade Identification Number	00028985366638
Item Form	Liquid
Item Weight	1.65 Pounds
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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

379.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews