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PERMABOND HH 131

PERMABOND HH 131

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Anaerobic threadlocker, high strength, highest torques

Permabond HH131 — High-strength, high-temperature resistant threadlocker (paste).

Price on request

  • Brand
  • Manufacturer
  • Country of origin
  • Container
  • Torque strength (M10 steel ISO10964) Breakloose
  • Torque strength (M10 steel ISO10964) Prevailing
  • Chemical group
  • Specific Gravity
  • Viscosity (adhesives)
  • Fluorescence
  • Maximum gap fill (mm)
  • DVGW gas approval
  • KTW-BWGL Drinking Water
  • Hardness (Shore D)
  • Storage Temperature (°C)
  • Color

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Anaerobic adhesives PERMABOND range review 2026

 
General Terms and Conditions

Shipping usually within 1 to 3 business days
(Availability confirmed after order)

Express logistics. Fast and reliable within Switzerland & Europe

From Swiss stock Dispatch within 24h Batch certificate Invoice 30 days (B2B) Technical advice
Shipping & Delivery

Usually 1 to 3 business days

Availability is confirmed after order receipt.

Express logistics within Switzerland & Europe.

Terms and Conditions →

Product data

Internal reference: 49-203.FL.ML200

Internal reference: 49-203.FL.ML200

PERMABOND HH 131
PERMABOND HH 131
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-203.FL.ML200

Permabond HH131 is a high-strength, high-temperature resistant anaerobic threadlocker with DVGW gas and KTW-BWGL drinking water approval — designed for large threads up to M56 and the highest requirements in gas and water installations.

With its thixotropic paste consistency (22,500 mPa·s at 2 rpm), HH131 does not drip from vertical threads and fills gaps up to 0.3 mm. Its thread range up to M56 (2 inches) is exceptional—most threadlockers are limited to M20 or M30.

The unique combination of DVGW gas approval and KTW-BWGL drinking water approval qualifies HH131 for gas and water installations—a dual certification possessed by only a few anaerobic adhesives. Its high-temperature resistance and high strength (27 N·m breakaway strength, 54 N·m extension, 17 MPa shear strength) make it the premium choice for industrial installations.

APPROVAL & SPECIAL PROPERTIES

DVGW gas approval + KTW-BWGL drinking water approval — the unique dual certification for gas and drinking water pipes. A pasty, high-strength threadlocker up to M56 threads, high-temperature resistant — Permabond HH131 is the premium choice for demanding plumbing and gas installations.

Permabond HH131 in figures
27 N·m
Breakaway Torque
M56
max. thread
DVGW+KTW
Gas + Drinking water
High temperature
Up to 200 °C

What distinguishes Permabond HH131

DVGW Gas + KTW Drinking Water
Dual certification for gas and water installations — a rare combination.
Threads up to M56
Exceptional reach — even large industrial threads can be securely joined.
High temperature resistance
Retains strength at higher temperatures than standard threadlockers.
pasty consistency
Does not drip from vertical threads — apply precisely.
High strength
27 N·m breakaway strength, 54 N·m further — permanent bonding.
Excellent chemical resistance
Tolerant of solvents, oils and many industrial media.

What is Permabond HH131 used for?

Gas installations
DVGW-approved — screw connections in gas pipes and fittings.
Drinking water installation
KTW-BWGL approved — pumps, distributors, large screw connections.
Large threads
Up to M56 — plant engineering, heavy industry, apparatus engineering.
Hot machine components
High temperature resistance for motors, pumps, and industrial furnaces.
Permanent bonding with special approval
Gas and drinking water systems that require high-strength protection.

Processing

1
Clean surfaces
Bonding surfaces must be clean, dry, and free of grease. Degrease with Permabond Cleaner A or a solvent (acetone, isopropanol). Rough surfaces (~25 µm) result in higher bond strength than polished ones.
2
Apply adhesive
Apply Permabond HH131 directly from the bottle — for through holes, apply a stripe along the thread length; for blind holes, apply a few drops to the bottom. Do not touch the nozzle to metal surfaces (this will cause premature hardening in the bottle).
3
Joining components
Insert the screws and tighten to the desired torque. For shaft-hub fits, assemble the components before the adhesive begins to cure.
4
Allow to cure
Anaerobic curing begins in the absence of air and upon contact with metal. Handling strength is typically achieved after 15 minutes, functional strength after 1 hour, and full strength after 24 hours at 23 °C.
5
Accelerate curing (optional)
On inactive surfaces (stainless steel, zinc, aluminum) or at low temperatures, Permabond A905 activator can be used — apply to one bonding surface, allow to flash off, then apply adhesive to the other side.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Permabond A905 Activator
Accelerates anaerobic curing on inactive surfaces such as stainless steel, zinc, or aluminum and improves gap curing.
To the product →
Permabond A 905 Spray
Aerosol version of the A905 activator — convenient application in hard-to-reach areas or large surfaces.
To the product →
Permabond Cleaner A Aerosol
Spray cleaner for rapid degreasing and preparation of bonding surfaces before applying the anaerobic adhesive.
To the product →
Permabond A118 High Strength Universal
High-strength all-purpose bonding — the universal choice for demanding screw, bearing, and shaft-hub connections.
To the product →

Important Notes

Not suitable for / Important notes
Disassembly typically requires heating the joint. Not for oxygen service. Some thermoplastics may be affected.
Storage
Store at 5 to 25 °C. Anaerobic adhesives lose their reactivity upon contact with metal — do not touch the tip of the bottle to metal surfaces, and do not pour adhesive back into the bottle.

Which Permabond anaerobic adhesive for which application?

Permabond HH131 in direct comparison with related products of the A series.

Permabond HH131
Current Product		Permabond A134 →Permabond A118 →Permabond A025 →
Application / StrengthHigh-strength, high-temperature resistant threadlocker (paste)Standard high-strength A-seriesLow viscosity, A-seriesWRAS, low viscosity
Viscosity22,500 mPa s @ 2 rpm / 7,000 mPa s @ 20 rpm (thixotropic)Paste400 mPa·s750 mPa·s
Max. gap fill.0.3 mm0.5 mm0.12 mm0.2 mm
Breakaway Torque27 N·m30 N·m33 N·m13 N·m
Prevailing torque54 N·m50 N·m58 N·m23 N·m
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
Anaerobic adhesives PERMABOND range review 2026

Technical data for PERMABOND HH 131

All 16 product information 4 Performance at final strength 2 Physical properties 4 Curing values ​​1 Product approvals 2 Mechanical properties 1 Thermal properties 1 General 1
Product Information
Brand Permabond
Manufacturer Permabond Engineering Adhesives Ltd
Country of origin Italy
Container 200 ml
Performance at Full Cure
Torque strength (M10 steel ISO10964) Breakloose 27 N·m
Torque strength (M10 steel ISO10964) Prevailing 54 N·m
Physical Properties
Chemical group Acrylic
Specific Gravity 1,1
Viscosity (adhesives) High-viscosity / Paste
Fluorescence Yes
Curing values
Maximum gap fill (mm) 0,3
Product Approvals
DVGW gas approval Yes
KTW-BWGL Drinking Water Yes
Mechanical properties
Hardness (Shore D) 70
Thermal Properties
Storage Temperature (°C) 5-25
General
Color red

Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.

Documents and data sheets

Click on a document for the preview or the download icon for direct download.

Technical Data Sheets (TDS) 3
Permabond HH 131 - Technical Data Sheet DE.pdf
357 KB
Permabond HH 131 - Technical Data Sheet EN.pdf
377 KB
Permabond HH 131 - Technical Data Sheet FR.pdf
332 KB
Safety Data Sheets (SDS) 3
Permabond HH 131 - Safety Data Sheet DE.pdf
364 KB
Permabond HH 131 - Safety Data Sheet EN.pdf
342 KB
Permabond HH 131 - Fiche de Sécurité FR.pdf
346 KB

Frequently asked questions about Permabond HH131

Practical application and design questions — answered by SILITECH.

Permabond HH131 is an anaerobic acrylic adhesive with a viscosity of 22,500 mPa·s @ 2 rpm / 7,000 mPa·s @ 20 rpm (thixotropic) and gap filling up to 0.3 mm. It is a high-strength, high-temperature resistant threadlocker with DVGW gas and KTW drinking water approval — for threads up to M56. Anaerobic adhesives cure in the absence of air and in contact with metal — ideal for tight tolerance metallic joints.

Anaerobic adhesives like Permabond HH131 remain liquid in the bottle (due to contact with air and oxygen) and only begin to harden after bonding under anaerobic conditions and metal-to-metal contact. Curing starts at 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.

Difficult to remove — Permabond HH131 is high-strength (27 N·m breakaway torque). Disassembly typically requires heating the bond to 200 °C or more. Designed for permanent bonding.

Permabond HH131 is approved according to DVGW gas approval and KTW-BWGL drinking water approval . These certifications qualify the product for the respective specified applications—such as direct contact with drinking water in the case of WRAS and KTW approvals.

Permabond HH131 typically reaches 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 HH131 is a high-strength, high-temperature threadlocker (paste) (22,500 mPa·s @ 2 rpm / 7,000 mPa·s @ 20 rpm (thixotropic) viscosity, 0.3 mm gap filling, 27 N·m breakaway torque). Permabond A134 is a high-strength paste (paste, 0.5 mm, 30 N·m breakaway torque) — standard high-strength A-series. Both belong to the anaerobic Permabond A-series.

The choice depends on the application: Permabond HH131 (high-strength, high-temperature resistant threadlocker paste); Permabond A134 (high-strength paste); Permabond A118 (high-strength universal threadlocker); Permabond A025 (high-temperature high-strength threadlocker). For inactive surfaces (stainless steel, zinc, aluminum), Permabond A905 activator be used to accelerate curing.

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Product Specifications

Product Information
Brand Permabond
Manufacturer Permabond Engineering Adhesives Ltd
Country of origin Italy
Container 200 ml
Performance at Full Cure
Torque strength (M10 steel ISO10964) Breakloose 27 N·m
Torque strength (M10 steel ISO10964) Prevailing 54 N·m
Physical Properties
Chemical group Acrylic
Specific Gravity 1,1
Viscosity (adhesives) High-viscosity / Paste
Fluorescence Yes
Curing values
Maximum gap fill (mm) 0,3
Product Approvals
DVGW gas approval Yes
KTW-BWGL Drinking Water Yes
Mechanical properties
Hardness (Shore D) 70
Thermal Properties
Storage Temperature (°C) 5-25
Uncategorized
Color red
Keywords
Keywords
Anaerobic adhesives PERMABOND range review 2026

Documents and data sheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download: