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Quick Details

  • Other Names: Retaining Adhesives
  • Place of Origin: Shandong, China (Mainland)
  • Classification: Other Adhesives
  • Main Raw Material: Acrylic
  • Usage: Construction, Transportation, Automobile, industrial machinary
  • Brand Name: Darbond
  • Model Number: 2638
  • Color: Green
  • Max. Gap Fill(mm): 0.38
  • Viscosity(mPa.s): 2500
  • Shear Strength(MPa): >25
  • Temperature Range(centigrade): -50-150
  • Fixture(min): 5-10
  • Full Cure(h): 24

Packaging & Delivery

Packaging Details 50ml bottle, 250ml bottle
Delivery Time 15 days


1.Retaining Compound
2.Maximum Strength
3.Seals and secures cylindrical assemblies up to 0.25mm diametral clearance.


  Darbond® 2638 is one component, maximum high strength, high viscosity anaerobic compound for retaining cylindrical hole/shaft fitting part. It cures when confined in the absence of air between two close fitting metal surfaces.


Typical Properties

  • Maximum high strength, high viscosity.
  • Seals and secures cylindrical assemblies up to 0.25mm diametral clearance.
  • Fixtures in 5 minutes.
  • Designed for transition fit and interference fit.

 Typical Applications

  • Used for retaining cylindrical assembly where fit clearance can approach 0.26mm and where maximum strength at room temperature is required.
  • Typical application: Locking bushings and sleeves into housings and on shafts.

   Detailed Products of Darbond® Retaining Compound

Product No.Typical ApplicationGap Fill
UncuredCuredCuring Speed
Specific Gravity
Shear Strength
Temperature Range
2603Slightly oil contaminated surface0.13Green2001.1>20-50-1505-1024
2609For transition fit and interference fit.0.13Green1751.1>15-50-15010-2024
2620Withstands high temperatures to 230°C0.3Green8,500 thixotropic1.15>17-50-23010-2024
2638Maximum strength0.38Green2,5001.09>25-50-1505-1024
2641Medium strength for easier disassembly0.2Yellow1,950   thixotropic1.07>6.5-50-15020-3024
2648Withstands high temp. to 175°C continuously 0.15Green5001.25>18-50-1755-1524
2680For clearance fit and transition fit0.25Green1,2501.12>19-50-15010-1524
2660For large clearance (0.5mm) sealing0.5Grey1,000,000 thixotropic1.12>15-50-15010-1524
2662For cup plug sealing, dispensed automatically0.13Red3,000 thixotropic1.08>14-50-1505-1524
2686For cup plug sealing, dispensed manually0.13Red31,000 thixotropic1.08>14-50-1505-1524




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