Compound List

Several rubber compounds are used in the production of rollers. The table below shows some of the most common:


RUBBER COMPOUND DUROMETER RANGE (SHORE) DESCRIPTION
Nitrile Rubber 20-95 Nitrile (NBR, Buna N) compounds for general useage requiring oil resistance
High A N C Nitrile Rubber 40-95 High A N C Nitrile rubber compounds for enhanced resisitance
Nitrole Textile Series 40-95 Nitrile compoiunds developed specifically for textile applications and other applications involving aqueous media
Nitrile Extra Tough 50-95 Extra Tough Nitrile compounds developed for more demanding applications
Carboxylated Nitrile Rubber 45-95 Carboxylated Nitrile compounds offering abrasion resistance and toughness
Hydrogenated Nitrile 50-98 Hydrogenated or highly saturated Nitrile compounds with outstanding heat and abrasion resistance
Nitrile/PVC Series 20-50 Unique blends of Nitrile rubber and PVC. The softer compounds are for offset printing applications and the harder compounds are for industrial applications
50-95
Aqua Series 25-40 Compounds developed for offset printing dampening rollers, to exhibit high affinity to fountain solutions
HW Series 20-50 Nitrile compounds for high-speed web offset printing
NB Series 20-50 Nitrile/PVC formulation developed to optimise the performance in sheet-fed and web offset printing
EPDM Series 20-95 EPDM type rubber compounds offering toughness, chemical resistance, and low swell to specific solvents
EPDM Advantage Series 50-98 Easy processing (good extruding and easy to finish) EPDM compounds
EPDM/Silicone Rubber 40-95 Unique blend of EPDM and Silicone offering improved toughness over Silicone with better release & high temperature resistance than EPDM
Neoprene Series .5-95 Neoprene compounds with good all-round properties for industrial applications
Millable Urethane Series 40-95 Polyurethane compounds based on a millable type polyether backbone
Hypalon Series 30-95 Hypalon compounds which are tough and hard wearing for dry applications
Aqueous Hypalon Series 45-98 Hypalon compounds with outstanding toughness coupled with superior resistance to aqueous media
Fluoroelastomers 50-95 Fluoroelastomer compounds for high temperature resistance and resistant to a broad range of chemicals and solvents
SBR Series 30-95 BR formulations for general use on roller applications
Silicone Series 40-90 Silicone compounds giving high temperature resistance and high release, formulated specifically for roller applications
Natural Series 25-99 Natural rubber-based compounds for general roller use requiring toughness and dynamic properties

Typical Rubber Compounds used in Fife roller coverings, have chief properties as follows:

COMPOUND
NATURAL RUBBER NITRILE NEOPRENE HYPALON SILICON
ASTM CODE NO. NR NBR CR CSM Si
HARDNESS (SHORE A) 50-70 50-60 25-75 65-70 40-80
TENSILE P.S.I 3000 3000 2500 3000 1400
WEAR RESISTANCE E G G G N
OIL RESISTANCE N E G G G
CONCENTRATED ACIDS N N N N R
DILUTED ACIDS R R G G G
ALKALIS G R G G G
CHLORINATED SOLVENTS N N N G N
OZONE & SUNLIGHT R R VG E E
CONTINIOUS MAX TEMP 70°C 105°C 105°C 120°C 260°C
FLAME RESISTANT NO NO YES YES YES

*E = Excellent
*VG = Very Good
*G = Good
*R = Reasonable
*N = Not Recommended

This table should be used as a guide only. We will be pleased to give further details of resistance to chemicals and other properties when selecting these or any special rubber compounds to meet your needs.

Laminating & Fusion Rollers

HIGH STRENGTH SILICONE RUBBER
HARDNESS RANGE (SHORE A) 40 50 60 70
TENSILE STRENGTH Mpa 10 11 11 9
ELONGATION % 700 700 600 500
TEAR STRENGTH Kn/m 30 30 35 40
MAX WORKING TEMPERATURE 260C
ACID & CHEMICAL RESISTANT
STANDARD STRENGTH SILICONE RUBBER
HARDNESS RANGE (SHORE A) 42 50 60 70
TENSILE STRENGTH Mpa 6.5 6.5 6.5 6
ELONGATION % 350 300 250 200
TEAR STRENGTH Kn/m 8.5 8.5 8.5 8.5
MAX WORKING TEMPERATURE 260C
ACID & CHEMICAL RESISTANT