Loctite High Strength Black Alkoxy Silicone Gasket Sealant Paste 300 ml Tube Loctite SI 5980

Loctite Loctite SI 5980 is a high-strength black alkoxy silicone gasket sealant paste supplied in a convenient 300 ml tube. It is engineered to provide superior gasket sealing performance in various industrial and automotive applications.

This sealant paste cures upon exposure to atmospheric moisture, forming a durable, flexible silicone rubber gasket that resists ageing, weathering, and thermal cycles without shrinking, cracking, or hardening. The product’s high flexibility and energy-neutral cure process make it ideal for demanding environments.

Designed for operation within a broad temperature range from -59°C to 329°C, this Loctite sealant shows excellent resistance to automotive engine oils, making it well-suited for engine compartments and related equipment. Its low modulus enhances load-bearing and shock-absorbing characteristics, improving gasket performance under mechanical vibrations.

The sealant’s non-corrosive, odour-free formulation reduces operator exposure to unpleasant chemicals while ensuring reliable application. It does not require mixing before use, facilitating ease of application in maintenance and manufacturing settings.

Typical applications include sealing flanges with permanent oil contact such as inlet manifolds, oil pans, transmission covers, valve covers, cooling systems, water pumps, thermostats, transmission pans, and timing chain covers. These use cases highlight its versatility in automotive and industrial fluid power systems.

Manufactured in Italy, the Loctite SI 5980 silicone gasket sealant meets quality expectations for long service life and robustness in critical sealing roles. Resists ageing, weathering, and thermal cycling without hardening or cracking.

Cures on exposure to moisture forming a tough, flexible silicone rubber gasket. Compatible with operating temperatures ranging from -59°C to 329°C. Offers excellent resistance to automotive engine oils and minimal migration.

Energy-neutral, odour-free cure that is non-corrosive and user-friendly. Enhances load-bearing and shock-absorbing properties in bonded areas. Ideal for flange applications with permanent oil contact. Composed of alkoxy silicone with no mixing required.

Commonly used in automotive and industrial sealing of inlet manifolds, oil pans, transmission covers, and cooling systems. Manufactured in Italy ensuring high quality and durability. Explore the broader range of Sealants and adhesives in the Adhesive & Pressure Sensitive Tapes category on EnvMart for additional sealing solutions.