
LOCTITE® 565 PST Thread Sealant – 50ml / 250ml
🔧 Premium Pipe Thread Sealant for Metal Fittings – Vibration & Leak Resistant
🛠 Product Overview
LOCTITE® 565 PST Thread Sealant is a white to off-white, high-viscosity anaerobic sealant engineered for locking and sealing metal threaded pipe fittings. It provides a low-strength, methacrylate-based bond that cures in the absence of air between close-fitting metal surfaces. This formula offers reliable resistance against shock, vibration, and pressure leaks, making it ideal for both maintenance and OEM applications.
✅ Key Features & Benefits
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Reliable Thread Sealing for Metal Pipes
Specially formulated for sealing metal threads in hydraulic, pneumatic, and industrial systems. -
Anaerobic Cure for Maximum Sealing
Cures in the absence of air when confined between close-fitting threads, creating a durable, leak-proof seal. -
Low Strength – Easy Disassembly
Allows for convenient maintenance or adjustment without damaging threaded components. -
High Viscosity for Controlled Application
Thixotropic nature ensures excellent gap-filling and prevents migration after application. -
Prevents Leakage & Vibration Loosening
Locks fittings securely while resisting loosening caused by shock, thermal cycling, or vibration.
📊 Technical Specifications
Property | Value |
---|---|
Color | White / Off-White |
Strength | Low |
Viscosity | ~300,000 mPa·s (cP) Brookfield |
Cure Type | Anaerobic (Methacrylate Ester Base) |
Temperature Range | -65°F to 300°F (-54°C to 149°C) |
Application | Thread Sealing – Metal Pipe Fittings |
Packaging Options | Available in 50ml, 250ml, and 1L |
🔍 Typical Applications
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Thread sealing for stainless steel, brass, aluminum, and other metal fittings
-
Use in oil & gas lines, compressed air systems, HVAC, hydraulics
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Ideal for industrial machinery, construction equipment, and automotive repairs
LOCTITE 565 is a white to off-white, 1-part, low strength, high viscosity, anaerobically-cured, methacrylate ester, acrylic thread sealant designed for the locking and sealing of metal pipes and fittings. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration.
- Designed for the locking and sealing of metal pipes and fittings.
- Prevents loosening and leakage from shock and vibration
Storage
Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.

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