LOCTITE 518 - Gasketing Sealant for Hydrogen Application

  • Semi-flexible red sealant for rigid metal flanges.
  • Cures anaerobically between metal surfaces, forming a continuous, resistant film.
  • Fills gaps up to 0.25 mm.
  • Seals instantly at low pressure.
  • Temperature resistance up to 150°C (300°F).
  • Successfully pressure tested with pure hydrogen up to 41 bar (4.1 MPa).

Add to compare

LOCTITE 518 - Gasketing Sealant for Hydrogen Application

  • LOCTITE 518 is a red, gel-like, medium-strength, anaerobic, one-component sealant used for sealing close-fitting rigid metal flanges.
  • The product cures in the absence of air between close-fitting metal surfaces and provides resistance to low pressures immediately after assembly.
  • The thixotropic nature of LOCTITE 518 reduces migration after application and allows reliable performance on both active metals such as mild steel and passive substrates including aluminum.
  • It offers gap performance up to 0.25 mm and contamination tolerance, curing even in the presence of minor oil residues.
  • Uncured material can resist low on-line test pressures, with pressure resistance tested up to 1.35 MPa depending on induced gap, and cured gaskets have been tested up to 1.3 MPa for leakage.

Key features

  • Acrylic; dimethacrylate ester
  • One-component; no mixing required
  • Thixotropic viscosity
  • Anaerobic cure; can be used with activator
  • Suitable for sealing rigid metal flanges
  • Medium strength
  • Red gel-like material
  • Instant resistance to low on-line test pressures (uncured)
  • Gap performance up to 0.25 mm
  • Tested up to 1.3 MPa for leakage (cured)

Product specifications

  • Technology: Acrylic
  • Chemical Type: Dimethacrylate ester
  • Appearance (uncured): Red gel-like material
  • Cure: Anaerobic

Application areas

  • Hydrogen fitting sealing

Contact us

  • Henkel provides suitable sealant and adhesives for the hydrogen value chain. Interested? Please contact Henkel by filling in the RFQ or contact vendor form.
Henkel Adhesive Technologies

LEADING THE MARKETS OF TODAY

SHAPING THE MARKETS OF TOMORROW

Henkel's Adhesive Technologies business is world’s number one producer in adhesives, sealants and functional coatings for industrial customers as well as for consumers and craftsmen. Being industry and application experts across manufacturing industries worldwide, we work closely with our customers and partners to create sustainable value for all stakeholders – with high-impact solutions based on an unmatched technology and trusted brand portfolio.

Latest products