novapress ® ACTIV
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novapress® ACTIV - Special composite material with controlled swelling properties FZ/11/12.07/001/FZ Frenzelit-Werke GmbH & Co. KG P.O. Box 11 40 · 95456 Bad Berneck · Germany Phone: +49 9273 72-0 × Fax: +49 9273 72-221 info@frenzelit.de · www.frenzelit.com GASKETS TECHNICAL TEXTILES EXPANSION JOINTS INSULATION NEW MATERIALS All previous versions of this prospectus cease to apply. Subject to technical amendment. Material profile New material combination of high-grade aramid fibres and fillers bonded with NBR rubber (Nitrile Butadiene Rubber). The material compound consists of an oil-resistant, hard core and very soft covering layers on both sides having controlled swelling properties in oil. A special material profile results from the different properties of the material layers: • excellent adaptability • controlled swelling in oil, fuels and greases in critical ranges • very good stress relaxation • low permeability to gas Applications This special gasket material can be applied where the surface pressure between the bolts is insufficient, but partially excessive pressure is found directly under the bolts. This irregular distribution of pressure is balanced by the swelling capability of the gasket material in contact with oil and additionally the special material construction. Typical applications are as follows: • Plant, apparatus and transformer construction • General machine building industry • Accessories for the automotive industry Surface coating An additional surface coating would adversely affect the swelling function of the covering layers. The same applies to the use of sealing acids, such as graphite paste, silicone or copper grease which reduce the frictional resistance between gasket and flange. Material data General Data Binders Core: NBR; Cover: NR/NBR Colour one side brown, one side red Anti-stick coating non standard Sheet sizes and thickness tolerance according to DIN 28 091-1 Physical properties Gasket thickness 2.0 mm Standard Unity Value * Density DIN 28 090-2 [g/cm3] 1.45 Tensile strength DIN 52 910 longitudinal [N/mm2] 32 transverse [N/mm2] 9 Residual stress sdE/16 DIN 52 913 175 °C [N/mm2] 32 300 °C [N/mm2] 24 Compressibility ASTM F36 J [%] 8 Recovery ASTM F36 J [%] 66 Cold compressibility eKSW DIN 28 090-2 [%] 9 Cold recovery eKRW DIN 28 090-2 [%] 5 Hot creep eWSW/200 DIN 28 090-2 [%] 12 Hot recovery eWRW/200 DIN 28 090-2 [%] 2 Recovery R DIN 28 090-2 0.040 Specific leakage rate DIN 3535-6 [mg/(m*s)] 0.100 Specific leakage rate l2,0 DIN 28 090-2 [mg/(m·s)] 0.150 Fluid resistance ASTM F 146 ASTM IRM 903 5h / 150 °C Weight change [%] 23 Thickness increase [%] 12 ASTM Fuel B 5h / 23 °C Weight change [%] 18 Thickness increase [%] 10 * = Mode (typical value) Product data • Dimensions in mm: 1000 x 1500, 1500 x 1500, 3000 x 1500 • Thicknesses in mm: 1.0/1.5/2.0/3.0 • Further dimensions and thicknesses are available on request Quality Management ISO/TS 16949 Environmental Management ISO 14001 Do you have any questions about your application? The gasket information service will help you: gaskets@frenzelit.de