Tube Fittings
Temperatures and Storage
Operating temperature depending on the fitting material
Fittings:
- Steel: (DIN 3859-1): -40°C to +120°C
- Stainless steel: (DIN 3859-1): -60°C to 100°C
(The nominal pressures PN apply for a temperature range from -20° to +120°C.
Higher temperatures and mechanical stress result in reduced pressures).
Seals:
- NBR: -25°C to +100°C
- FPM: -15°C to +200°C
- PTFE: -100°C to +250°C
When different materials for the fittings and the seals are combined the highest of the respective lowest temperatures and the lowest of the respective highest temperature applies.
Ambient temperature:
With seal material NBR -35°C
With seal material FPM -25°C
Storage
Storage of fittings with elastomeric seals must be done in accordance with DIN 7716.
The fittings with elastomeric seals must be stored in a cool and dry location, free from dust.
The tube fittings with seals made of elastomeric seals must be protected from direct light, bright artificial lighting (UV-radiation) and ozone.