HT ACM: High Temperature – no issue, it will get a little hotter!

For over a decade, Noxtite HT-ACMs covered the gap of material classes up to 150°C (300°F) and beyond 200°C (390°F)

Increased demands on seals and gaskets as well as air-charged engine hoses require polymer materials which can – consistently - withstand 150°C (300°F) and more, and do it at a reasonable material cost. Most Unimatec HT-ACM grades (based on carboxy cure sites) meet these requirements. The diamine cured Noxtite ACMs are pioneer materials in many applications and technologies. These grades match tough automotive specifications with service temperature requirements of -40°C (-40°F) to +185°C (365°F), with short term spikes even up to 200°C (390°F).

wellendichtring

The table below provides an overview of our HT-ACM range for seals and gaskets. If you think these don’t match your requirements, please contact us!

HT-ACM Portfolio

Thinking of demanding hose applications, you will find our HT-ACM grades in air-charged hoses, oil-cooler and EGR lines, and also in injected molded hoses. Modern cars rely on these materials in continuous operation, a look under the hood of the vehicle tells all– or visit our “virtual motor” in our Homepage. Enclosed you find a few of these materials listed:

dichtungen

PA 522HF und PA 526

Compounder advantages at a glance when using NOXTITE® HT-ACM polymers:

  • superior relaxation behaviour and excellent compression set
  • significantly improved part life compared to other / standard ACMs
  • Enhanced service temperature range of -40°C (-40°F) to +185°C (365°F)
  • Improved resistance against modern engine and gearbox oils
  • Low temperature performance (-40°C) while maintaining very good oil resistance


Tear resistance

Heat Resistance – DIN 53508
Tear Strength – Angle Type

Heat Resistance – DIN 53508
Elongation @ Break

Fatigue Resistance
De Mattia Flex Cracking Test

Fatigue Resistance
De Mattia Flex Cracking Test



Mineral oil resistance



Scorch

Shelf life stability and Processing Safety
Mooney Viscosity

Shelf life stability and Processing Safety
Mooney Scorch Time t5 @ 125 °C



Compressive stress relaxation

Compressive stress relaxation / Air
DIN ISO 3384 (kontinuierlich) @ 1000h / 165 °C / 25% Def.

Compressive stress relaxation / Air
DIN ISO 3384 (kontinuierlich) @ 1000h / 165 °C / 25% Def.

Type Tg-Polymer (°C) Recommended max. service temp. (°C) Oil swell (DIN) ML 1+4@100°C (DIN) Key characteristics
PA 521 -17 +180°C +12% 54 outstanding mechanical properties, heat and oil resistance
PA 522 -30 +175°C +19% 30 well balanced heat and oil resistance
PA 522HF -31 +175°C +31% 30 excellent heat and compression set resistance, outstanding flowability
PA 522V -31 +175°C +29% 33 outstanding wear and compression set resistance, outstanding flowability
PA 524 -44 +170°C +34% 25 very low temperature flexibility, excellent balanced in heat and oil resistance
Type Tg-Polymer (°C) Recommended max. service temp. (°C) Oil swell (DIN) ML 1+4@100°C (DIN) Key characteristics
PA 522HF -31 +175°C +31% 30 excellent heat and compression set resistance, outstanding flowability
PA 526 -28 +185°C +10% 36 outstanding dynamic properties, improved processability (extrudability)