Loctite MR 2000 Extreme Temperature Repair Putty 2000F Metal Reapir (#235579) 8oz (237ml)

Product Name

Loctite MR 2000 Extreme Temperature Repair Putty 2000F Metal Repair (#235579) 8oz (237ml)

Brief Description

Loctite MR 2000 is a one-component, water-based, silicic acid repair putty engineered for extreme temperature metal repairs, capable of withstanding environments up to 2000°F (1000°C). This environmentally non-toxic and non-flammable compound contains no solvents or volatile compounds, curing to a durable, machinable metal finish.

Popular Applications & Uses

- Repairs of boiler doors and casings.- Repairing exhaust stacks.- Fixing defective molds, crucibles, and dies.- Sealing flanges, sagger plates, refractory bricks, and ceramic tiles.- Automotive exhaust applications, including headers, manifolds, catalytic converters, and exhaust ports.- Repairing cast iron, cast aluminum, and carbon steels.- Maintenance in industrial high-temperature systems such as turbines, incinerators, ovens, and furnaces.

Industries that Commonly Use It

- Automotive Service/Repair- General Manufacturing- Energy- Metal Fabrication- Construction/ Building Services- Industrial Supply- Distributers & Resellers

Special and Unique Features

- Withstands extreme temperatures up to 2000°F (1000°C).- One-component design, eliminating the need for mixing or measuring.- Water-based, non-flammable, non-toxic, and free of solvents or volatile compounds.- Cures to a metal finish.- Can be ground, sanded, drilled, tapped, and machined after full cure.- Offers excellent adhesion to cast iron, cast aluminum, and carbon steels.

Key Properties

- Technology: Water-based Adhesive- Chemical Type: Silicic Acid- Appearance: Silver Gray Putty- Components: One component - requires no mixing- Cure: Room Temperature or Heat Cure- Specific Gravity: 1.54 g/cm³ (uncured)- Cure Time @ 25°C: 5 to 7 hours (air dry)- Maximum Application Thickness: 0.95 cm (0.38 in)- Not recommended for use in pure oxygen and/or oxygen rich systems.- Should not be selected as a sealant for chlorine or other strong oxidizing materials.- Not for use in sealing engine block or cylinder head coolant leaks.

Surface Compatibility

- Cast iron- Cast aluminum- Carbon steels- Refractory bricks- Ceramic tiles

Known backups / known substitutes

- Pyro-Putty® 2400 High Temp Metal Sealer (Aremco Products)- THERMO PUTTY SS (EMP Inc.)- JB Weld HighHeat Epoxy Putty (J-B Weld)- Superfast Titanium Epoxy Putty Stick (Sylmasta)- Hernon Manufacturing offers a cross-reference guide for Loctite equivalents.

Comparison Note

Loctite MR 2000 distinguishes itself as a one-component, water-based silicic acid putty offering exceptional temperature resistance up to 2000°F (1000°C), along with non-toxic and solvent-free properties. While substitutes like J-B Weld HighHeat or Superfast Titanium are available, they are often epoxy-based, may be two-component, and typically have lower continuous temperature ratings. Pyro-Putty 2400 is a comparable single-component option with similar high-temperature capabilities.