Loctite 567 PST Low Strength Thread Sealant 50ml

$46.00

Inc. GST

Available

Loctite 567 is a one-component, off-white, low strength anaerobic thread sealant in paste form. It is a methacrylate ester designed for the locking and sealing of metal tapered threads and fittings.

Its high lubricating properties prevent galling on stainless steel, aluminium and other metal pipe threads. Henkel recommends it for industrial plant fluid power systems and for chemical processing and petroleum refining.

Where this product is used

Locking and sealing metal tapered threads and fittings
Stainless steel, aluminium and other metal pipe threads where galling is a risk
Industrial plant fluid power systems
Chemical processing and petroleum refining
Gas, potable water and hydrogen fittings where a regional approval applies (see the specification)

Features

Low strength, removable with hand tools
One component, no mixing
Smooth, creamy, off-white paste
High lubricating properties that prevent galling on stainless steel, aluminium and other metal pipe threads
Anaerobic cure, with an activator as secondary cure
Seals instantly to moderate pressures when properly tightened
Cold strength tested to -75 °C

Key specifications

Specification	Detail
Chemical type	Methacrylate ester
Colour	Smooth, creamy, off-white paste
Viscosity (Brookfield RVF, spindle 7, 25 °C, 2 rpm)	540,000 mPa·s
Specific gravity	1.1 at 23 °C
Breakaway torque (M10 black oxide bolts and mild steel nuts, 24 h at 22 °C, ISO 10964)	12 N·m
Breakaway torque (M10, 24 h at 22 °C, other surfaces)	Brass 12 N·m; zinc phosphate 9.3 N·m; stainless 8.0 N·m; zinc dichromate 2.6 N·m
Early breakaway (3/8 x 24 steel, 4 h at 22 °C)	At least 0.3 N·m
Prevail torque (M10, unseated)	1.2 to 2.3 N·m across substrates
Removal torque (3/8 NPT steel tees and plugs pre-torqued to 27 N·m, ASTM D6396)	50 N·m
Cold strength	Tested to -75 °C
Approvals (all regional)	Australian Gas Association certificate 3207 (Class III, 2000 kPa, working temperature -10 to 205 °C); GASTEC QA AR-214, Hydrogen Certified Adhesive; ANSI/NSF 61 (potable water not exceeding 82 °C); UL MH8007 (not exceeding 2 in pipe size); ULC MH27131 (up to 13,790 kPa)
Storage	8 °C to 21 °C, unopened, dry
Technical data sheet	Henkel TDS May 2024 (Reference 1.7)

Available sizes

Size	SKU
50 ml	A0049920
250 ml	A0049921

Selecting the right option

Loctite 567 is a low strength paste. For another low strength paste see Loctite 565 PST Thread Sealant 50ml; for a low strength liquid see Loctite 569 Low Strength Thread Sealant 50ml. For medium strength see Loctite 577 Medium Strength Thread Sealant or Loctite 542 Medium Strength Thread Sealant.

Using it

Properly tightened fittings will seal instantly to moderate pressures. For maximum pressure and solvent resistance, allow a minimum of 24 hours to cure.

Remove with hand tools. Where excessive engagement length or large diameters (over 1 inch) prevent this, apply localised heat to approximately 250 °C and disassemble while hot.

The data sheet names activator SF 7471 or SF 7649 as the secondary cure.

Storage and handling

Store unopened in a dry location. Optimal storage is between 8 °C and 21 °C. Storage below 8 °C or above 28 °C can adversely affect the properties of the product.

Limits and safety

Not recommended for pure oxygen or oxygen-rich systems, or as a sealant for chlorine or other strong oxidising materials. Plastics can stress crack, and compatibility should be checked after aqueous washes. The Henkel data sheet states no operating temperature range; 250 °C is the heat used to disassemble a joint, not a service limit. All approvals are regional.

Frequently asked questions

Is Loctite 567 approved for gas and potable water?

Henkel lists Australian Gas Association certificate 3207 (Class III, 2000 kPa, -10 to 205 °C), ANSI/NSF 61 for potable water not exceeding 82 °C, and UL and ULC classifications. All are regional approvals, so confirm them for your application.

What temperature can Loctite 567 handle?

The data sheet states no operating range. The Australian Gas Association working temperature is -10 to 205 °C, and cold strength was tested to -75 °C.

Can Loctite 567 be removed?

Yes, with hand tools. For large diameters over 1 inch or long engagement, apply localised heat to approximately 250 °C and disassemble while hot.

Will Loctite 567 gall stainless steel?

Henkel states its high lubricating properties prevent galling on stainless steel, aluminium and other metal pipe threads.

What is the breakaway torque of Loctite 567?

12 N·m on M10 black oxide bolts and mild steel nuts after 24 hours at 22 °C (ISO 10964). On other M10 surfaces it ranges from 2.6 N·m on zinc dichromate to 12 N·m on brass.

How long does Loctite 567 take to cure?

Fittings seal instantly to moderate pressures, and Henkel gives at least 0.3 N·m breakaway after 4 hours at 22 °C. Allow a minimum of 24 hours for maximum pressure and solvent resistance.

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