Loctite SI 587 RTV Silicone Sealant 300ml

Loctite SI 587 RTV Silicone Sealant is a metallic blue thixotropic oxime silicone paste engineered for maximum efficacy in gasketing and sealing applications. This industrial-grade adhesive permanently bonds and seals rigid or flexible joints, preventing costly fluid leaks caused by severe vibration, thermal cycling, and harsh automotive fluids. Whether you are securing oil pans or transmission covers, this premium silicone sealant provides a robust, leak-proof seal on all common substrates—including a wide range of metals and fabricated silicone gaskets.

Why Choose Loctite SI 587?

• Excellent Oil Resistance: Specially formulated to withstand continuous exposure to automotive engine oils and typical industrial fluids without breaking down.
• Versatile Material Compatibility: Adheres cleanly to a broad range of substrates and serves as an excellent adhesive for bonding or repairing fabricated silicone gaskets.
• Enhanced Load Bearing: Improves the load-bearing and shock-absorbing characteristics of the bond area once fully cured.
• Thixotropic Paste Formula: The high-viscosity paste minimizes liquid migration, meaning it won't run, sag, or drip after application to the surface.
• Wide Temperature Endurance: Maintains its flexible, dependable sealing performance across an extreme operational temperature range from -75°F to +500°F (-60°C to +260°C).

Technical Specifications

• Product Type: Room Temperature Vulcanization (RTV) Oxime Silicone Paste
• Strength: Flexible / Structural Bond
• Color: Metallic Blue
• Container Size: 300ml
• Certifications: NSF Category P1 Registered, UL Classified (Plastics & Components, E257711)

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external surfaces with a compatible cleaning solvent and let dry completely to remove all traces of oil, grease, or old gasket material.
2. Apply: Apply a continuous bead of the silicone paste to the prepared mating surface.
3. Assemble: Align and press the components together within the skin-over time of the product. The formula will begin its room temperature vulcanization (RTV) curing process upon exposure to atmospheric moisture.

Frequently Asked Questions (FAQ)

What is Loctite SI 587 used for?

Loctite SI 587 is a silicone sealant designed for form-in-place gasketing and sealing applications in plant maintenance and automotive production. It is specifically formulated to prevent equipment housings and fluid casings from leaking due to oil exposure, high operating temperatures, and mechanical shock.

Can Loctite SI 587 be disassembled?

Yes. Although it creates an incredibly tough and resilient seal, cured silicone gaskets made with Loctite SI 587 can be disassembled by carefully separating the flange surfaces and using a standard gasket scraper or chemical removal solvent to clean off the residue.

Does Loctite SI 587 work on metal surfaces?

Yes. Loctite SI 587 offers robust performance across a wide range of materials. It adheres exceptionally well to standard metal assemblies as well as existing fabricated silicone components.

Is Loctite SI 587 safe for food processing environments?

Loctite SI 587 is registered to NSF Category P1. This means it is approved for use as a sealant in and around food processing areas, provided there is no possibility of direct food contact.