1 1

Würth Low-Strength Hydraulic Sealant

Würth Low-Strength Hydraulic Sealant

0893545050

24 in stock

Key Features

  • Low-strength anaerobic sealant developed for pneumatic and hydraulic screw connections exposed to high pressures and dynamic loads.
  • Provides 100% sealing - completely fills gaps to prevent leakage and protect against corrosion and friction wear.
  • Low strength formulation allows easy disassembly for maintenance or system repair.
  • Resistant to all common hydraulic fluids and fuels, ensuring long-term system reliability.
  • Fast curing, even at low temperatures, minimising downtime and allowing quick re-pressurisation of hydraulic systems.
  • Maintains seal integrity up to 200 bar, and with pre-stressed joints, up to the burst pressure of the pipe or hose.
  • High chemical resistance to bases, gases, oils, fuels, and solvents.
  • Silicone-free, solvent-free, and oil-free formulation prevents contamination of sensitive systems.
  • Packaged in Würth's DOS one-hand dispensing system for clean, adjustable application with minimal product waste.
£33.99 GBP
£33.99 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.
View full details
Product Product subtotal Quantity Price Product subtotal
Würth Low-Strength Hydraulic Sealant
Würth Low-Strength Hydraulic Sealant0893545050
Würth Low-Strength Hydraulic Sealant0893545050
£33.99/ea 		£0.00
£33.99/ea £0.00

Description

Specialised Sealant for High-Pressure Hydraulic and Pneumatic Systems

Würth Low-Strength Hydraulic Sealant is an anaerobic methacrylic-based liquid sealant formulated for sealing metal screw fittings and connectors in hydraulic and pneumatic systems. Designed to withstand high fluid pressures and mechanical loads, it ensures leak-free operation and long-term system reliability, even in demanding industrial and automotive environments.

Reliable Sealing Under High Pressure

The cured sealant creates a permanent, flexible polymer film that fully seals metal thread interfaces. It withstands pressures up to 200 bar, and with properly pre-stressed joints, up to the burst pressure of the system. Once cured, it resists vibration, temperature cycling, and hydraulic shock, ensuring reliable long-term sealing.

Low Strength for Easy Disassembly

This product offers low mechanical bonding strength, making it ideal for maintenance-heavy applications where periodic disassembly is required. Connections can be released with standard hand tools without damaging threads or fittings.

Fast Curing for Reduced Downtime

The sealant cures rapidly in the absence of oxygen and in contact with metal ions (copper or iron). Initial strength develops within 30-40 minutes, functional strength within 2-3 hours, and full curing occurs in 12-24hours, depending on temperature and surface conditions. It cures reliably even at lower temperatures, reducing system downtime.

Excellent Chemical and Temperature Resistance

Once cured, Würth Low-Strength Hydraulic Sealant provides strong resistance to a wide range of hydraulic oils, fuels, synthetic lubricants, coolants, gases, and solvents. It maintains sealing integrity across temperatures from -55°C to 150°C, making it suitable for use in both automotive and industrial fluid systems.

DOS System for Professional Application

Supplied in Wuürth's DOS (Dispensing One System) packaging, the product allows one-handed operation with precise control of dispensing volume. The adjustable turn-lock nozzle prevents overuse and ensures cost-effective application. The bottle design enables complete product emptying, minimising waste and reducing costs.

Material Compatibility and Safety Considerations

Due to the strong catalytic effect of copper and its alloys, accelerated curing may occur, potentially causing micro-cracks in warm water systems (>=40°C). In such cases, preliminary tests are recommended. Prolonged exposure to uncured product may affect certain plastics, such as ABS, PMMA (Plexiglas), polycarbonate, polystyrene, and painted surfaces.

More Information

Application Instructions

  1. Ensure all components are dry, clean, and free from dust, oil, and grease.
  2. Apply the sealant evenly to the male thread of the connection.
  3. Assemble parts immediately to ensure full thread coverage.
  4. Allow the assembly to cure in the absence of oxygen and in contact with metal surfaces.
  5. The joint may be pressurised once the sealant reaches functional strength (after 2-3 hours).
  6. For best results, allow 12-24 hours for full curing before operating at maximum system pressure.

Usage Notes

  • Processing temperature: 5°C to 35°C.
  • Temperature resistance: -55°C to 150°C.
  • Avoid contact with sensitive plastics such as ABS, PMMA, polycarbonate, or polystyrene.
  • Perform preliminary tests before use on copper or copper alloy fittings in warm water systems above 40°C.
  • Store in a cool, dry place at room temperature; shelf life 18 months from production.

Specifications

Chemical Basis: Methacrylic acid ether

Colour: Violet

Contents: 50 g

Density: 1.2 g/cm³ (DIN EN ISO 2811-1)

Viscosity (25 °C): 14,000–20,000 mPas (Brookfield RVT, spindle 2/2.5 rpm)

Gap-Filling Capacity: Up to 0.15 mm

Thread Size Compatibility: Up to R 3/4 inch

Initial Strength: 30–40 min

Functional Strength: 2–3 h

Full Cure: 12–24 h

Breakaway Torque: 5–10 Nm (DIN EN 15865)

Prevail Torque: 0–3 Nm (DIN EN 15865)

Compressive Shear Strength: 1–5 N/mm² (ISO 10123)

Processing Temperature: +5 °C to +35 °C

Temperature Resistance: -55 °C to +150 °C

Flashing Point: 100 °C

Curing Mechanism: Anaerobic (exclusion of oxygen, metal contact required)

Silicone-Free: Yes

Solvent-Free: Yes

Oil-Free: Yes

Packaging: DOS system, one-hand adjustable dispensing

Shelf Life: 18 months (stored at room temperature)

Documents