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Permatex20539 Indian Head Gasket Shellac Compound, 2 oz.

Permatex20539 Indian Head Gasket Shellac Compound, 2 oz.

Q: 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.

Q: 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.

Q: 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.

Q: 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

Product ID: 275679427

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Details

Brand
Permatex
Shape
Round
UPC
686226205391
Manufacturer
Permatex
Unit count
1 count

⏳Fast drying formula

🔧Universal gasket compatibility

🛠️Precision sealing power

Frequently Bought Together

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.

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Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red

Description

🛠️ Seal the deal with confidence—don’t let leaks slow your hustle!

RAPID DRYING FORMULA - Minimizes downtime with quick-setting shellac that accelerates repairs.
COMPACT LIGHTWEIGHT - Easy to store and handle, perfect for on-the-go professionals and DIYers alike.
VERSATILE APPLICATION - Compatible with a wide range of gaskets, making it a must-have for every toolkit.
PRECISION SEALING MASTERY - Ensures leak-proof, durable gasket bonds for peak engine performance.
TRUSTED BRAND RELIABILITY - From Permatex, a leader in automotive solutions trusted by experts worldwide.

Permatex 20539 Indian Head Gasket Shellac Compound is a 2 oz. precision sealing solution designed to create durable, leak-proof bonds on various gaskets. Its fast-drying formula reduces repair time, while its compact size ensures easy handling. Trusted by professionals, this compound is an essential automotive accessory for reliable engine maintenance.

Specifications

Manufacturer	Permatex
Brand	Permatex
Product Dimensions	3.18 x 9.37 x 3.18 cm; 45.36 g
Item model number	20539
Manufacturer Part Number	20539
OEM Part Number	20539
Item Weight	45.3 g

Have a Question? See What Others Asked

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

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

Can you use this on transmission pan gaskets?

Can I use this on a cylinder head gasket ?

Common Questions

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Trustpilot

TrustScore 4.5 | 7,300+ reviews