LOCTITE FLANGE SEALANT GREY MAXX ULTRA 95G

For a superior seal that stands up to oil, water, and vibration, choose Loctite® Grey Maxx Ultra (SI 5699) — a high-performance silicone flange sealant designed for rigid and flexible metal assemblies. This moisture-curing RTV silicone forms a tough, flexible rubber gasket that delivers exceptional resistance to oil, glycol, and water, making it ideal for engines, transmissions, cast metal housings, and sheet metal covers.

Loctite 5699 is tack-free in just 10 minutes, allowing for faster reassembly and reduced downtime. Once cured, it provides a durable, vibration-resistant seal that withstands temperatures from –59°C to +204°C, maintaining flexibility and strength even in extreme operating conditions.

With excellent adhesion on machined or cast surfaces — including metal and plastic substrates — Loctite Grey Maxx Ultra is a versatile choice for both OEM and maintenance sealing applications. It’s also NSF P1 registered (No. 122998), making it suitable for use in environments where incidental food contact may occur.

Key Features:

• Flexible silicone gasket maker – cures on exposure to moisture in air

• Designed for flange sealing on transmissions, cast housings, and rigid assemblies

• Tack-free in just 10 minutes for quick handling and reassembly

• Excellent oil and water-glycol resistance

• Temperature resistant from –59°C to +204°C

• Bonds to metal and plastic surfaces (machined or cast)

• P1 NSF Reg. No.: 122998 – food-safe registration

• Colour: Grey

Specifications:

• Brand: Loctite®

• Model: SI 5699 (Grey Maxx Ultra)

• Type: Silicone Flange Sealant (RTV)

• Colour: Grey

• Size: 95 g

• Viscosity: Paste

• Tack-Free Time: 10 minutes

• Temperature Range: –59°C to +204°C

• Cure Type: Moisture-curing RTV silicone

Flexible, durable, and oil-resistant — Loctite® Grey Maxx Ultra 5699 provides professional-grade sealing for transmissions, engines, and cast metal housings.