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PERMABOND LH050
Low-strength anaerobic threadlocker, removable with tools
Low-strength thread sealing paste — tool-removable sealing of large pipe threads up to M56.
HS Code:
3506.9190000
Permabond LH050 is a low-strength anaerobic thread sealant in paste form — developed for pressure-tight sealing of pipe threads up to M56, which must remain releasable at any time for service and inspection purposes.
With a paste consistency of 250,000 mPa·s, LH050 does not drip, remains precisely in place, and fills gaps up to 0.5 mm. The methacrylate chemistry distinguishes the product from the classic acrylic anaerobics of the A-series.
With a low torque of 4 N·m breakaway and 3 N·m running, LH050 is the ideal choice for maintenance and service valves — the connection seals reliably, but can be loosened at any time without tools or with minimal tool use. The range up to M56 also covers large industrial pipe threads.
Low-strength thread sealing paste based on methacrylate — seals pipe threads up to M56 pressure-tight and remains removable with standard tools. Ideal for service valves, inspection fittings, and comparable maintenance applications.
What sets Permabond LH050 apart
What is Permabond LH050 used for?
Processing
Recommended accessories
Important Notes
Which Permabond anaerobic adhesive for which application?
Permabond LH050 in direct comparison with related products from the A-series.
Permabond LH050 Current Product | Permabond A129 → | Permabond A1044 → | Permabond MH052 → | |
|---|---|---|---|---|
| Application / Strength | Low-strength thread sealant (paste) | Medium-strength A-series | Immediate sealing, higher strength | Dual function with KTW+WRAS |
| Viscosity | 250'000 mPa·s (paste) | Gel | Thixotropic | 65'000 mPa·s |
| Max. gap fill. | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm |
| Breakaway Torque | 4 N·m | 12 N·m | 20 N·m | 20 N·m |
| Prevailing torque | 3 N·m | 7 N·m | 10 N·m | 11 N·m |
Technical data for PERMABOND LH050
| Product Information | |
|---|---|
| Brand | Permabond |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| Country of origin | Italy |
| Container | 50 ml, 250 ml |
| UFI (Unique Formula Identifier) | P911-8005-W00G-DA96 |
| Performance at Full Cure | |
|---|---|
| Torque strength (M10 steel ISO10964) Breakloose | 4 N·m |
| Torque strength (M10 steel ISO10964) Prevailing | 3 N·m |
| Physical Properties | |
|---|---|
| Chemical group | Methacrylate ester |
| Specific Gravity | 1,1 |
| Viscosity (adhesives) | High-viscosity / Paste |
| Fluorescence | Yes |
| Curing values | |
|---|---|
| Maximum gap fill (mm) | 0,5 |
| Thermal Properties | |
|---|---|
| Storage Temperature (°C) | 5-25 |
| General | |
|---|---|
| Color | white |
Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.
Frequently asked questions about Permabond LH050
Practical application and design questions — answered by SILITECH.
Permabond LH050 is a methacrylate ester (anaerobic) with a viscosity of 250'000 mPa·s (paste) and gap filling up to 0.5 mm. Low-strength thread sealing paste — tool-free sealing of large pipe threads up to M56. Anaerobic adhesives cure in the absence of air and in contact with metal — ideal for tightly toleranced metallic joints.
Anaerobic adhesives such as Permabond LH050 remain liquid in the bottle (air contact, oxygen) and only begin to cure after assembly under exclusion of air + metal contact. Curing starts from the metal surface and progresses into the bond gap. The product cures quickly on steel and copper; on stainless steel and zinc, the Permabond A905 activator may be beneficial.
Yes — Permabond LH050 is a low-strength threadlocker (4 N·m breakaway torque) and can be removed at any time with standard tools without heating. Designed for maintenance and service.
Permabond LH050 has no specific industry approvals such as WRAS or KTW (drinking water). For general industrial applications, the product is released according to Permabond's internal specifications — product-specific testing before series use is recommended.
Permabond LH050 typically achieves handling strength after 15 minutes and functional strength after 1 hour at 23 °C on M10 steel. Final strength is reached after 24 hours. On inactive surfaces (stainless steel, zinc) or at low temperatures, the curing time is extended — Permabond A905 activator accelerates the process.
Permabond LH050 is a low-strength thread sealant (paste) (250'000 mPa·s (paste) viscosity, 0.5 mm gap fill, 4 N·m breakaway torque). Permabond A129 is a medium-strength gel (gel, 0.5 mm, 12 N·m breakaway torque) — medium-strength A-series. Both belong to the anaerobic Permabond A-series.
The choice depends on the application: Permabond LH050 (low-strength thread sealant (paste)); Permabond A129 (medium-strength gel); Permabond A1044 (fast curing); Permabond MH052 (threadlocker + sealant). For inactive surfaces (stainless steel, zinc, aluminum), additionally use Permabond A905 Activator to accelerate curing.
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Product Specifications
| Product Information | |
|---|---|
| Container | 50 ml or 250 ml |
| Brand | Permabond |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| Country of origin | Italy |
| UFI (Unique Formula Identifier) | P911-8005-W00G-DA96 |
| Performance at Full Cure | |
|---|---|
| Torque strength (M10 steel ISO10964) Breakloose | 4 N·m |
| Torque strength (M10 steel ISO10964) Prevailing | 3 N·m |
| Physical Properties | |
|---|---|
| Chemical group | Methacrylate ester |
| Specific Gravity | 1,1 |
| Viscosity (adhesives) | High-viscosity / Paste |
| Fluorescence | Yes |
| Curing values | |
|---|---|
| Maximum gap fill (mm) | 0,5 |
| Thermal Properties | |
|---|---|
| Storage Temperature (°C) | 5-25 |
| Uncategorized | |
|---|---|
| Color | white |
| Keywords | |
|---|---|
| Keywords | |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download: