Products

Silicone Rubber (HCR)

Silicone Rubber (HCR) Molding

High Elasticity

Offers a lower compression set and better heat resistance than general-purpose grades for highly elastic industrial parts.

  • 10 grades
  • Shore A 31–81

Applications

  • O-ring
  • Roll
  • Boot
  • Sheet
  • Gasket
  • Packing

Typical Properties by Grade (per Catalog)8 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%
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 331UTranslucent 반투명1.09130SC-8B1.04.0170/10200/431754502213-20-60-20-18-55-40+501015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 341UTranslucent 반투명1.12160SC-8B1.03.8170/10200/441783502411-15-35-10-17-45-30+451015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 351UTranslucent 반투명1.14200SC-8B1.03.6170/10200/45185300268-10-30-5-16-30-30+451014–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 361UTranslucent 반투명1.16230SC-8B1.03.4170/10200/46185250249-5-15-10-17-25-30+401015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 371UTranslucent 반투명1.19260SC-8B1.03.2170/10200/471802002111-5-13-10-15-17-23+351015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 381UTranslucent 반투명1.21280SC-8B1.03.0170/10200/481751501911-3-10-10-13-15-20+351015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 2816UWhite-Gray 회백색1.24280SC-8B1.03.0170/10200/48180150188+3-20-45-25-10-10+371015–
고탄성 성형용 High Elasticity/ General PurposeO-Ring, Roll, Boot, Sheet, Gasket, PackingTS 661UWhite-Gray 회백색1.25250SC-8B1.03.3170/10200/46184250219-7-15-10-20-15-25351015–

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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.

Grades per TDS2 grades

GradeAppearanceSpecific gravityPlasticityWilliams, mm/100HardnessShore ATensile strengthkgf/cm²Elongation%Tear strengthkgf/cmLinear shrinkage%Compression set%, 175℃×22h
TS 671UWhite-gray1.322807082150133.59
TS 681UWhite-gray1.323208176130103.59

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The grades below are not in the catalog; values are from the TDS, converted to kgf units.

Technical Data Downloads

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