Would this work for ATF transmission fluid fittings?

It will work on a wide variety of fittings and applications but is designed for use on NPT (pipe) threads, not machined fittings like flare or compression ferrule types; if those are leaking, they need to be replaced.

Will it cause damage to Transmission if used on drain plugs ??

Absolutely not. Used this on T-56 6 Speed fill hole bolt with zero issues

Can this be used on polypropylene fittings with UNF threads?

You can use this on anything that’s threaded. Just allow it fully harden and double check for leaks once it does.

57535 Seal | Desertcart Portugal

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal it once, trust it forever!

RAPID CURE STRENGTH - Quickly hardens to withstand up to 10,000 PSI, ideal for heavy-duty industrial and automotive use.
VERSATILE DURABLE - Temperature resistant from -120°F to 300°F, protecting against rust, corrosion, and loosening over time.
MESS FREE APPLICATION - Replaces messy tape and pipe dope with a smooth, reliable sealant designed for metal tapered pipe threads.
UNMATCHED SEAL HOLD - Combines thread sealant and blue thread locker for a firm, leak-proof connection under pressure.
PRESSURE PROOF PERFORMANCE - Guaranteed airtight and waterproof protection up to 1000 PSI, perfect for harsh environments.

Permatex 57535 Seal is a high-performance blue thread sealant that locks metal tapered pipe fittings securely, providing airtight and waterproof protection up to 1000 PSI. It cures rapidly to handle pressures up to 10,000 PSI and withstands extreme temperatures from -120°F to 300°F, making it ideal for professional mechanics and DIYers seeking a clean, durable, and leak-proof solution without tape or pipe dope.

Specifications

Manufacturer	Permatex
Part number	57535
Item Weight	68 g
Product Dimensions	20.32 x 12.7 x 1.27 cm; 68.04 g
Size	35 ml
Color	blue
Style	Thread Sealant
Material	Plastic
Included Components	Threadlocker
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	20.3 x 12.7 x 1.3 cm

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TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

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Customer service was outstanding when I had questions about the product.

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