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Laboratory

Laboratory
We have our own laboratory to check or to match suitable rubber blend depending on temperature, endurance and environment requirements (water, greases, oils, chemical substances). (see raw materials)

We have a certificate of National Institute of Hygiene which allows our products to be used in contact with drinking water and food.

Testing of basic rubber’s properties contain:

  • hardness,
  • tensile strength,
  • elongation at break,
  • permanent deformation,
  • brittleness point.

 

Dependending on requirements claimed for finished articles, investigations of supplementary properties of rubber are led:

  • heat ageing,
  • tear resistance,
  • rubber – metal bonding,
  • abrasion resistance,
  • standard liquid ageing: oils, solvents,
  • flame resistance,
  • electric resistance,
  • ozone resistance,
  • staining,
  • elasticity, rebound and dynamic properties.

Laboratory tests at GUMET:

1. Rheological properties testing,
RheoCheck Profile MD – GIBITRE Instruments srl
Standards:
ISO 6502
ASTM 6204
ASTM 5289
ASTM 6601
DIN 53529

2.Mechanical properties of rubber and plastics,
Testing machine with three measuring heads 1kN, 2kN and 5kN : Tensor Check Profile – GIBITRE Instruments srl

2.1 Tensile strength, elongation of rubber and plastics
Standards:
PN-EN ISO 37
PN-EN ISO 527-2
2.2 Hysteresis under compressive stress – PN-C-04289:1987
2.3 Tear strength – PN-EN ISO 34-1:2010

3. Density,
Electronic Balance Check – GIBITRE Instruments srl
Standards:
PN-EN ISO 1183-1
ISO 2781

4. Plastics, determination of water absorption, Ma 50-1/R moisture analyzer – RADWAG
Standard:
ISO 62

5. Hardness of elastomers and plastics,
DIGITEST II hardness tester with interchangeable measuring heads ( ShA , Sh AM, Sh D) – BAREISS
Standards:
PN-EN ISO 868
ISO 48
ISO 7619-1
ASTM D2240

6. Permanent deformation after compression
Standards:
ISO 815-1
ASTM D395

7. Abrasion – Abrasion Check,
GIBITRE Instruments srl
Standard:
PN-ISO 4649

8. Liquid Resistance,
Thermal Block – GIBITRE Instruments srl
Standards:
PN-ISO 1817
ASTM D471

9. Aging and heat resistance tests,
dryers SLW 15STD and SLW 115 SIMPLE – POL-EKO
Standards:
PN-ISO 188
ASTM D 454
DIN 53 508