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Datasheet generated 2026-10-07
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Loctite SI 5980 Quick Gasket Flexible Silicone Black 300ml Cartridge

Loctite · Tools & Workshop Consumables · Gasketing & Flange Sealants · Germany · loctite.com
Part Number
2064233  ·  HS 3506.91
Loctite SI 5980 Quick Gasket Flexible Silicone Black 300ml Cartridge

Loctite SI 5980 (Quick Gasket) is a one-component, alkoxy (low-odour) RTV silicone designed for gasketing applications with resistance to automotive engine oils. It cures at room temperature with humidity to a flexible rubber and withstands on-line, low-pressure tests carried out before the product begins to cure. Typical uses include stamped sheet-metal covers such as timing covers and oil sumps where good oil resistance and high joint-movement capability are required.

Technical Specifications

Technology silicone; chemical type alkoxy silicone, one component, no mixing, thixotropic, room-temperature vulcanising (RTV). Uncured black paste; density 1.2 to 1.4 g/cm3 @ 25 degC; extrusion rate 120 to 325 g/min (0.62 MPa, 25 degC); solids/non-volatile content 99.75 percent. Tack-free time 15 to 45 minutes; cures with ambient humidity (depth of cure increases over days, temperature/humidity dependent)
Cured propertiesShore A hardness approximately 27 (ISO 868); tensile strength approximately 1.6 N/mm2 (230 psi) and elongation at break approximately 290 percent (ISO 37); coefficient of thermal expansion 240 x 10^-6 K^-1 (ISO 11359-2); linear shrinkage approximately 1.0 percent (ISO 1675). PDF file (TDS) attached. 300 ml cartridge.
ColorBlack
Fill size300 ml
Chemical basesilicone
CureRTV silicone, moisture-cured
StandardsISO 868, ISO 11359-2, ISO 1675

Properties

MOQ1

Standards

Attached Documents