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Permatex 56521 High Performance Thread Sealant is a heavy-duty, white sealant designed for metal and tapered pipe threads. It provides airtight, watertight seals that resist loosening, corrosion, and galling under pressures up to 1,000 PSI, with a rapid cure strength up to 10,000 PSI. Temperature resistant from -60°F to 300°F, it’s ideal for automotive and industrial applications, offering a cleaner, faster alternative to traditional pipe tape and dope.

| Best Sellers Rank | #17,821 in Automotive ( See Top 100 in Automotive ) #41 in Thread Lock Sealers |
| Customer Reviews | 4.7 out of 5 stars 649 Reviews |
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