LOCTITE SI 5015

Main features

RTV Silicone Cure
Tough, Flexible Silicone Rubber
Broad Substrate Compatibility

Product Description

LOCTITE® SI 5015 is a one-component acetoxy silicone RTV gasketing compound that cures at room temperature upon exposure to atmospheric moisture to form a tough, flexible silicone rubber gasket. The material provides excellent resistance to aging, weathering, vibration, and thermal cycling without hardening, shrinking, or cracking. It is designed for gasket replacement and gasket dressing applications and adheres to a wide variety of substrates. Typical automotive applications include valve covers, timing gear covers, differential covers, oil pans, transmission pans, water pumps, and thermostat housings.

Key Features & Benefits

Room-temperature vulcanizing (RTV) silicone gasket maker.
Provides tough, flexible silicone rubber seals.
Resists aging, weathering and thermal cycling.
Will not harden, shrink or crack during service.
Enhances load-bearing and shock-absorbing characteristics.
Safe for use with automotive oxygen sensors.
Adheres to a broad range of substrates.

Recommended Applications

Valve covers.
Timing gear covers.
Differential covers.
Oil pans and transmission pans.
Water pumps and thermostat housings.
Gasket replacement and gasket dressing applications.

TDS, SDS & Technical Documents

LOCTITE SI 5015

English (Technical Data Sheet (TDS))

Technical Specifications

General Properties

Appearance

Blue paste

Specific Gravity

1.04

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property	Value	Unit	Condition
Technology	Silicone	—	RTV gasketing compound
Chemical Type	Acetoxy Silicone	—	One-component system
Appearance	Blue Paste	—	Uncured material
Specific Gravity	1.04	—	25°C
Odor	Acetic Acid	—	Typical
Extrusion Rate	≥250	g/min	0.62 MPa, 25°C, 1/8 in nozzle
Flow	≤7.5	mm	ISO 7390
Tack-Free Time	≤60	minutes	25°C / 50% RH