491983 LOCTITE® SI 587 Gasketing sealants

The LOCTITE® SI 587 Gasketing Sealant 491983 is a premium silicone-based sealant designed for heavy-duty engine and transmission applications. It creates durable, flexible seals that resist oil, water, and vibration. Suitable for metal surfaces like valve covers and oil pans, it performs exceptionally well under high heat and pressure. Trusted by professionals, this sealant is available at Wofford Truck Parts, your source for reliable automotive and industrial sealing solutions.

LOCTITE HENKEL CORPORATION Part No: 491983

$5.83

Specifications

LOCTITE® SI 587 Gasketing Sealant 491983 from LOCTITE HENKEL CORPORATION is a high-performance, silicone-based sealant that forms strong, flexible gaskets on metal flanges and housings. It resists oil, water, vibration, and thermal cycling, making it ideal for heavy-duty truck engines and industrial systems. Once cured, it remains flexible to prevent cracking under pressure. This blue RTV sealant replaces pre-cut gaskets and provides a secure, leak-free seal. Available now at Wofford Truck Parts for professional repair and maintenance needs.

Weight

0.35

Compatibility

Freightliner Cascadia (2008–2025)
Kenworth T680 (2013–2025)
Peterbilt 389 (2007–2025)
Volvo VNL (2008–2025)
Mack Anthem (2018–2025)
International LT Series (2017–2025)
Western Star 4900 (2015–2025)