Natural Rubber · Caramel Rubber (NR) · Antacid Gum

  • The rubber or gum natural, also called rubber or candy gum is excellent for its recovery properties .
  • Offers good resistance to most inorganic salts and weak acids and bases.
  • However it is not recommended for use with oils and solvents, or where exposure to ozone, oxygen or >sunlight is noticeable.
  • It has excellent mechanical properties and high resistance to abrasion.
  • Due to its chemical properties, it is known as antacid rubber
natural rubber caramel rubber
PropertyUnitTestValue
Color  Caramel
Specific weightgr/cm3 1,00
Indentation hardnessShore AASTM D224043
Breaking loadMPaASTM D41220,0
Elongation at break%ASTM D412650
TearingN/mm

ASTM D624

Die C

30
Abrasion resistancemm3DIN 53516  (5N)80
TemperaturesºC -40 / 80

Thermal aging (70ºC 70h)

Shore A

%

%

ASTM D573

5

-15

-25

Permanent deformation

(70ºC 22h)

 

ASTM D395

Método B

30
Chemical Resistances:
to OzoneModerate
to dilute acids and basesEXCELLENT
to concentrated acids and basesGood
to hydrocarbonsNot recommended
to organic solventsNot recommended