Products

Silicone Rubber (HCR)

Silicone Rubber (HCR) Special

Oil Resistance

For parts in contact with fluids, chemical solvents and oils; hardness 40–80 can be custom-compounded in-house.

  • 2 grades
  • Shore A 41–80

Applications

  • O-ring
  • Oil seal
  • Gasket
  • Cylinder packing
  • Boot
  • Valve

Typical Properties by Grade (per Catalog)2 grades

GradeApplicationProductAppearanceSpecific GravityWilliams PlasticityOrganic PeroxideLinear Shrinkage (%)Curing ConditionMechanical PropertiesKS M6518Compression Set (%)180℃/22hrHeat Resistance250℃/72hrOil ResistanceIRM903 Oil, 150℃/72hrVolume Resistivity (Ω·cm)Reference
Trade NamePHRPress Cure℃/minPost Cure℃/hrHardnessShore ATensile Strengthkgf/cm²Elongation at Break%Tear Strengthkgf/cm · Type BHardness ΔTensile Δ%Elongation Δ%Hardness ΔTensile Δ%Elongation Δ%Volume Δ%
내유용 Oil ResistanceO-Ring, Oil-Seal, Gasket, Cylinder Packing, BootTS 403/40Milky-White 유백색1.11180SC-8B1.04.2170/10200/441694001118–––-5-12-15+12––
내유용 Oil ResistanceO-Ring, Oil-Seal, Gasket, Cylinder Packing, BootTS 403/80White-Gray 회백색1.37320SC-8B1.03.5170/10200/479771701316–––-3-10-12+10––

← Swipe the table sideways →

Same layout as the product catalog (Apr 2026). Values are typical measurements based on KS M6518, not specifications, and may vary with curing agent and cure conditions.

Technical Data Downloads

TDS files are in English; MSDS (Material Safety Data Sheets) are Korean PDFs. Please contact us for grades without an MSDS.