Miscellaneous test for compound-External

Physical Properties Type of Samples ASTM Standards Significance
Low temperature resistance Rubber Compound D832With standing temperature of compound
Fuel resistanceRubber Compound D471Swelling percentage of rubber
Flex crackingRubber Compound D813Crack resistance of compound
Water resistanceRubber Compound D6284Swelling of compound with eater

Finished product testing Internal & External

Di-Electric resistance test-Internal

  • Type of samples
    Rubber Product
  • ASTM Standards
    D4496
  • Significance
    Conductivity of the product

Bonding strength test-Internal

  • Type of samples
    Rubber to Metal Bonded Product
  • ASTM Standards
    D905
  • Significance
    Bonding strength of the product

Polymer identification test-External

Pyrolysis test

  • Type of samples
    Rubber Product
  • ASTM Standards
    D7579
  • Significance
    To identify the NR ,SBR & CR polymer

FTIR Test

  • Type of samples
    Rubber Product
  • ASTM Standards
    D6348
  • Significance
    To identify the polymers

Leakage test-External

  • Type of samples
    Oil Seals
  • ASTM Standards
    F2786
  • Significance
    To ensure the leakage of oil seals

Flammability test-External

  • Type of samples
    Rubber Product
  • ASTM Standards
    E2058
  • Significance
    To verify the extent of flame resistance of the product

Shelf Life of Rubber Products

Storage conditions are important for product usage after longer storing. Ageing effect continues even at room temperature even though very slow.

Hence it is advised to store the rubber product away from heat, Sunlight & moisture, preferably covered with black poly. Contact with grease, solvent, oil etc. should be strictly avoided.

Also FIFO system and storage stack height / rotation should be followed if stored for longer time to avoid any de-shaping.

Shelf Life of Rubber Products

S.No Rubber Type ASTM Designation Shelf life (Years)
1Nitrile Butadiene Rubber NBR

Up to 5

2Polyisoprene NR/IR

Up to 2

3Styrene SBR

Up to 3

4Ethylene propylene EPDM/EPM

Up to 7

5Chloroprene CR

Up to 10

6Polyurethane EU

Up to 10

7Fluorocarbon FKM Up to 20
8Silicone Q Up to 20
9Fluorosilicone FVMQ Up to 20
10Polyacrylic ACM/ANM Up to 20