Permatex 56521 High Performance Thread Sealant, 50 ml
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Permatex 56521 High Performance Thread Sealant, 50 ml

4.7/5
Product ID: 294725653
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Details

  • Material
    Synthetic
  • Brand
    Permatex
  • Item Weight
    50 g
  • Item dimensions L x W x H
    20.3 x 7.6 x
  • Compatible Material
    Stainless
💧Waterproof seal up to 1000 PSI
🔒Locks threads tight
🔥Withstands -60°F to 300°F

Description

🔧 Seal it tight, hold it right — the pro’s secret weapon!

  • UNMATCHED SEAL HOLD - Combines thread sealant and blue thread locker for leak-proof, pressure-tight connections.
  • MESS FREE METAL SEALANT - Ditch tape and pipe dope; enjoy a smooth, reliable seal designed for professional-grade metal fittings.
  • PRESSURE PROOF PERFORMANCE - Secures fittings with an airtight, watertight seal up to 1000 PSI—no leaks, no worries.
  • RAPID CURE FOR HEAVY DUTY USE - Fast-curing formula handles up to 10,000 PSI—ideal for stainless steel, oil lines, and fuel systems.
  • EXTREME TEMPERATURE RESILIENCE - Operates flawlessly from freezing -60°F to scorching 300°F without cracking or corrosion.

Permatex 56521 High Performance Thread Sealant is a 50 ml synthetic rubber liquid that delivers a powerful, fast-curing seal and thread lock. It ensures leak-proof, pressure-resistant connections up to 1000 PSI, withstands extreme temperatures from -60°F to 300°F, and replaces traditional tape or pipe dope for metal and stainless steel fittings. Perfect for professionals and serious DIYers demanding durable, corrosion-resistant performance.

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Specifications

MaterialSynthetic Rubber
BrandPermatex
Item Weight50 g
Item dimensions L x W x H20.3 x 7.6 x 5.1 Centimeters
Compatible MaterialStainless Steel, Metal Alloys
Water Resistance LevelWaterproof
Item FormLiquid
UPC079340565210
Net Quantity50.0 millilitre
StyleCompact
Global Trade Identification Number00079340565210
Number of Items1
ColourWhite
Surface RecommendationFixture
ManufacturerPermatex
Country of OriginUSA
Model number56521
Item Weight49.9 g
Product Dimensions20.32 x 7.62 x 5.08 cm; 49.9 g
Item model number56521
Item Height2 Inches
Item Width3 Inches
Included ComponentsAuto part, Automotive Accessories, Replacement and Performance parts
Are batteries included?No

Have a Question? See What Others Asked

Does this stuff seal pneumatic (800 psi) threads on an and npt fittings.
Can this be used on plastic pipe
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.
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.

Common Questions

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Fantastic experience overall. Will recommend to friends and family.

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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€ 39.18

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Permatex 56521 High Performance Thread Sealant 50 Ml | Desertcart Belgium