Loctite 565 PST Thread Sealant 50ml
Available
Loctite 565 is a one-component, white to off-white, low strength anaerobic thread sealant in paste form. It is a methacrylate ester designed for the locking and sealing of metal pipes and fittings.
Properly tightened fittings seal instantly to moderate pressures. It has a hydraulic pressure test to 207 bar after 24 hours cure, and the joint can be taken apart with standard hand tools.
Where this product is used
- Locking and sealing metal pipes and fittings
- Joints that need to be disassembled with standard hand tools
- Joints exposed to motor oil, unleaded gasoline, transmission fluid or distilled water (tested at 87 °C for 720 hours)
- Fittings for gasoline, petroleum oils or natural gas where a UL or ULC classification applies (regional approval)
- Potable water systems where ANSI/NSF 61 certification applies, potable water not exceeding 82 °C (regional approval)
Features
- Low strength, removable with standard hand tools
- One component, no mixing
- White to off-white paste, high viscosity class
- Anaerobic cure, with an activator as secondary cure
- Seals instantly to moderate pressures when properly tightened
- Pressure tested to 207 bar (3,000 psi) after 24 hours cure
- Heat-ageing data at 120 °C and 150 °C
Key specifications
| Specification | Detail |
|---|---|
| Brand | Loctite |
| Chemical type | Methacrylate ester |
| Colour | White to off-white paste |
| Viscosity class | High |
| Viscosity (Brookfield RVF, spindle 7, 25 °C, 2rpm) | 175,000 to 525,000 mPa·s |
| Specific gravity | 1.1 at 25 °C |
| Breakaway torque (3/8 NPT steel tees and plugs, 72 h at 22 °C, ASTM D6396) | 5 N·m |
| Pressure test (ASTM D1599 hydraulic, 24 h cure, 3/8 NPT steel tees and plugs pre-torqued to 27 N·m) | 207 bar (3,000 psi) |
| Compressive shear strength (ISO 10123, steel pins and collars, 24 h at 22 °C) | At least 1 N/mm² (LMS minimum) |
| Secondary cure | Activator (7471 or 7649) |
| Approvals (regional) | UL classification MH8007; ULC classification MH27131; NSF International certified to ANSI/NSF 61, potable water systems not exceeding 82 °C |
| Storage | 8 °C to 21 °C, unopened, dry |
Choosing the right option
Loctite 565 is a low strength paste. For other low strength sealants see Loctite 567 PST Low Strength Thread Sealant or Loctite 569 Low Strength Thread Sealant 50ml. For a medium strength paste see Loctite 577 Medium Strength Thread Sealant.
See also: Loctite 567 PST Low Strength Thread Sealant, Loctite 577 Medium Strength Thread Sealant, Loctite 569 Low Strength Thread Sealant 50ml, Loctite 542 Medium Strength Thread Sealant.
Using it
Properly tightened fittings will seal instantly to moderate pressures. For maximum pressure resistance and solvent resistance, allow the product to cure a minimum of 24 hours.
Remove with standard hand tools. Where hand tools do not work (excessive engagement length or diameters over 1"), apply local heat to about 250 °C and disassemble while hot.
Activator 7471 or 7649 is the secondary cure.
For long engagement or diameters over 1", heat locally to about 250 °C and disassemble while hot.
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 oxidisers. Not normally recommended for plastics, particularly thermoplastics. The UL and ULC classifications and the NSF certification are regional approvals. Read the safety data sheet before use.
After 720 hours at 87 °C it retains 100% of initial strength in motor oil, unleaded gasoline, phosphate ester, transmission fluid and distilled water, and 92% in brake fluid.
Tests in E85 ethanol, B100 bio-diesel and DEF (AdBlue) were run at 22 °C.
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Loctite 565 PST Thread Sealant 50ml
SKU: A0049944 | Model: 565-50ML-LOC
Loctite 565-50ML-LOC: loctite 565 low strength anaerobic thread sealant paste. Size: 50ml. Type: Low strength thread sealant.