loctite 5772

Loctite 5772

Color:Yellow
Key characteristics:Thixotropic
Viscosity, cone & plate Haake PK100, PK1, 2°, @ 25.0 °C Shear Rate 36 s⁻¹:16000.0 – 33000.0 mPa·s (cP)

Overview

Loctite 5772 is a yellow, medium-strength thread sealant for metal threaded pipes and fittings up to 80 mm (3″) in diameter. It was developed for demanding environments such as nuclear power facilities and is compatible with sensitive metals including titanium.

It seals and locks threads, preventing leakage and loosening under vibration, and operates typically from -65 °F to +300 °F (-54 °C to +150 °C).

Key Features & Benefits

  • Medium-strength anaerobic thread sealant – Suitable for disassembly with tools while resisting vibration.

  • Designed for critical service – Developed for use in nuclear industry applications and compatible with titanium.

  • Good chemical and temperature resistance – Works in demanding process and utility systems.

  • Instant low-pressure sealing – Full resistance achieved after proper cure.

Typical Applications

  • Nuclear and conventional power plant piping

  • Process piping with sensitive metals (e.g. titanium, stainless alloys)

  • High-reliability threaded joints where controlled strength and long-term sealing are required

How to Use

  1. Clean metal threads thoroughly.

  2. Apply Loctite 5772 to the male thread, covering 360° around several turns.

  3. Assemble and torque to specification.

  4. Fittings typically seal instantly at moderate pressure; allow at least 24 hours at ambient temperature for full pressure and chemical resistance.

FAQs

Q1: Why choose Loctite 5772 instead of standard pipe sealant?
Because it was designed for critical environments (including nuclear facilities) and metals like titanium, providing enhanced confidence in sensitive applications.

Q2: Is it removable?
Yes. As a medium-strength sealant, joints can be disassembled with appropriate hand tools; for very large fittings, localized heat may help.

Q3: What temperature range does it cover?
Typically -65 °F to +300 °F (-54 °C to +150 °C). Verify limits in the current TDS for your region.

Q4: Can Loctite 5772 be used on plastic threads or non-metallic fittings?
No. It is formulated for metal threads only.

Q5: Is it suitable for oxygen service?
Do not use in pure oxygen systems or strong oxidizing environments unless specifically approved by equipment and product documentation.

Related products