LOCTITE® SI 5660

Known as LOCTITE 5660

Features and Benefits

A 1-part, gray, flexible, non-corrosive flange sealant for applications involving large gaps.
LOCTITE® SI 5660 is a silicone sealant and cures on exposure to moisture in the air to form a tough rubber gasket. The nature of LOCTITE SI 5660 reduces the migration of liquid product after application to the part. It has been designed especially for gasketing applications where good resistance against oils and coolants is required. Typical applications include transmissions and cast metal housings. The product has leading health and safety features.
  • Thixotropic for ease of application
  • Room Temperature Vulcanizing (RTV) curing
  • Non-corrosive and lump-free
  • Oil- and water/glycol-resistant
  • Water and glycol-resistant
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Documents and Downloads

Safety Data Sheets and RoHs
LOCTITE® SI 5660, 40 ml Tube 1718240 en-FR
IDH: 1718240
EAN: 5010266005256

Size Case: 40 ml Tube

LOCTITE® SI 5660, Gray, 100 ml Tube 2064521 en-FR
IDH: 2064521
EAN: 5010266005683

Size Case: 100 ml Tube

LOCTITE® SI 5660, 100 ml Aerosol can 2326229 en-FR
IDH: 2326229
EAN: 4058093017135

Size Case: 100 ml Aerosol can

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Technical Information

Color Gray
Cure speed vs time, 24.0 hr. 2.5 mm
Gap fill 1.0 mm
Lab shear strength 1.8 N/mm²
Recommended for use with Metal, Plastic