Does this stuff seal pneumatic (800 psi) threads on an and npt fittings.

I’ve not used it for your application however, her is the product discription for reference Formulated for metal, tapered ppe thread fittings. Protects threaded areas from rust and corrosion. Uses: head bolts, oil senders, oil and coolant lines, fuel fittings. Features & details Cures rapidly to withstand 10,000 PSI Perfect as a replacement for Vibra-Seal pre-coated parts Prevents galling and protects mated threaded areas from rust and corrosion

Can this be used on plastic pipe

Here is a copy and paste of the product description. "Formulated for metal, tapered ppe thread fittings. Protects threaded areas from rust and corrosion. Uses: head bolts, oil senders, oil and coolant lines, fuel fittings". Hope this helps.

What's the difference between this & Special Edition? I need 2 use it 2 seal inline fuel filter thread brass fitting 4 a motorcycle tank 2 carb.

I tried a number of things to seal a brass tee into a motorcycle oil pressure outlet. Nothing worked 'til I tried this stuff. Be sure to clean the threads well beforehand. If the stuff is rated for fuel, I'm sure it'll work for your application. It's good stuff.

What's the difference between this & Special Edition? I need 2 use it 2 seal inline fuel filter thread brass fitting 4 a motorcycle tank 2 carb.

The special edition is no doubt like many other products listed on Amazon a seller attempting to use the false label of a "special edition" to lure buyers to buy from them at a higher price, without prime shipping and more often than not slower shipping. I am willing to bet if you contact the maker of the product that they do not produce a "special edition".

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General Fitting Thread Sealant, White, 50ml [PTX56521]

Product ID: 762034357

Details

Brand
Permatex
Item Weight
50 g
Item dimensions L x W x H
20.3 x 7.6 x
Material
Style
Thread

⚙️Viscosity 30,000 cP for secure sealing

🌡️Temp range -54°C to 149°C

🛠️1.7 fl oz liquid alternative to tape

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NT$1931

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In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal like a pro, skip the tape, and never leak again!

TEMPERATURE TOUGH - Operates flawlessly from -54°C to 149°C, perfect for extreme automotive and industrial environments.
TAPE FREE EFFICIENCY - Say goodbye to messy Teflon tape; this liquid sealant applies smoothly for a flawless fit every time.
LEAK PROOF CONFIDENCE - Anaerobic formula seals tight under pressure, vibration, and temperature shifts—no more costly leaks.
CORROSION STAIN DEFENSE - Prevents corrosion and staining, extending the life of your fittings and maintaining a pristine system.
METAL COMPATIBILITY MASTER - Engineered for steel, brass, aluminum, titanium—versatile enough for all your professional fittings.

Permatex PTX56521 is a high-viscosity, white anaerobic thread sealant designed for metal fittings. It withstands extreme temperatures from -54°C to 149°C and replaces traditional Teflon tape with a durable, corrosion-resistant liquid formula. Trusted by professionals for leak-proof performance in hydraulic, pneumatic, and fuel systems.

Specifications

ASIN	B000FW7VHI
Amazon Bestseller	#156,053 in Automotive ( See Top 100 in Automotive ) #1,039 in Oil System Tools
Brand	Permatex
Customer Reviews	4.7 4.7 out of 5 stars (560)
Date First Available	January 19, 2014
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	20.3 x 7.6 x 5.1 cm
Item Weight	49.9 g
Item model number	56521
Manufacturer	パーマテックス(Permatex)
Model	PTX56521
OEM Part Number	56521
Product Dimensions	20.32 x 7.62 x 5.08 cm; 49.9 g
Warranty	Due to product defects

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