Is this good for a small outboard gearcase as a supplement to the seals ?

If it is being used to enhance the performance of gaskets, yes. You can also apply it around the outer metal edge of a seal before driving it into a casting. It should not be applied to the rubber part of a seal that contacts a rotating/moving part.

I want to use this on freeze plugs, but do you apply wet, or let the product dry before setting freeze plugs in place.

Put the product on wet, drive the plug in immediately after, smear excess around circumference of installed plug. Done.

Can you use this on transmission pan gaskets?

I don't see why not, but this hardens like a glue so on a paper or composition gasket you will have to tear it apart for next removal, leaving material on both sides that will have to be scraped off. Not fun! I use this on one side of a gasket, usually the machined/flat side and a non-hardening sealer on the other side, so when you take it apart, the gasket won't tear apart, and can be reused, with a fresh coating of non-hardening sealer. That is the plan anyway. It doesn't always work. My usual choice for non-hardening sealer is Aviation gasket sealer, such as Permatex #80017 or similar. It is rated up to 400 degrees F. I also use it like Anti-Size on bolts, Not Exhaust, to keep them from rusting. Keeps out the water.

Can I use this on a cylinder head gasket ?

back in the older years this was the go to stuff for head gasket sealers, but now a days most head gasket makers like felpro have the sealant already on the gaskets ( like printo seal or permatorque style gaskets) so you do not need any sealer just install and torque

Permatex 20539 Indian Head Gasket Shellac Compound 2 Oz

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

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₨262

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

Secure transaction

Description

🛠️ Seal like a pro, drive with confidence!

ENDURING HEAT SHIELD - Operates reliably from 65°F to 350°F, perfect for diverse engine conditions
FUEL FLUID DEFENDER - Resists diesel fuels and most shop fluids to keep seals intact
COMPACT READY TO USE - 2 oz. solid shellac compound, easy to apply and store
UNIVERSAL COMPATIBILITY - Works seamlessly on both import and domestic vehicles of any model year
CLASSIC FORMULA PROVEN PERFORMANCE - Trusted original recipe since the 70s for unbeatable sealing power

Permatex 20539 Indian Head Gasket Shellac Compound is a hard-setting, economical sealant designed for low temperature and pressure applications. It withstands temperatures from 65°F to 350°F and resists diesel fuels and common shop fluids. Compatible with all common gasket materials, this 2 oz. brown shellac compound is a trusted classic formula favored by professionals and DIYers alike for reliable, durable sealing on both import and domestic vehicles.

Specifications

ASIN	B0008KLOG6
Best Sellers Rank	#25,236 in Automotive ( See Top 100 in Automotive ) #29 in Gasket Sealers #53 in Body Repair & Restoration Adhesives
Brand	Permatex
Brand Name	Permatex
Color	Brown
Customer Reviews	4.7 out of 5 stars 1,067 Reviews
Global Trade Identification Number	00686226205391
Included Components	Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.
Item Shape	Round
Item Thickness	0.25 Inches
Item Type Name	Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.
Item Weight	1.6 Ounces
Manufacturer	Permatex
Material	solid
Material Type	solid
Model	20539
Part Number	20539
Shape	Round
UPC	686226205391
Unit Count	1.0 Count
Warranty Description	As labelled

Reviews

R**K

7.04.2026

W**L

28.02.2026

F**S

28.03.2026

N**.

2.04.2026

G**E

13.10.2025

H**T

9.12.2025

M**N

26.02.2026

L**S

4.03.2026

西**孝

2.12.2024

K**R

2.03.2026

L**A

22.12.2025

M**K

13.12.2019

R**O

30.07.2025

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.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₨262

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

View all Trustpilot reviews

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.

Details

Details

Description

Specifications

Reviews

Common Questions