EPDM RUBBER BALLS

Terpolymer EPDM balls provide good resistance against heat, aging, atmospheric agents, UV radiations and good behaviour at low temperatures. They are available even with peroxide crosslinking agent.
Applications
They are used in several industrial applications, as sealing or floating units. They are even used in environment devices, mainly when balls are bleak.
Technical name
Commercial name
Abbreviation
Ethylene-Propylene-Diene Monomer
Buna-EP
EPDM
Physical / mechanical / thermal / electric / magnetic properties
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
1.20
Young's modulus
E
[MPa]
Mechanical
-
8
Elongation at break
A
%
Mechanical
Room temp.
max 600
Compression set
-
%
Mechanical
Room temp.
35
Friction coefficient
µ
-
Mechanical
Room temp.
0.50
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
165
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room temp.
0.15
Electric resistivity
ρ
[Ohm.mm2/m]
Electric
-
> 10^21
Relative magnetic permeability
µ
-
Magnetic
Diamagnetic
<~1
Technical data
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[Shore A]
75 - 90
-
-
Ultimate tensile strength
Mechanical
[MPa]
11 - 15
[psix10^3]
1.60 - 2.18
Service temperature
Thermal
[ºC]
-30 / 130
[ºF]
-22 / 266
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision Grade
1.000 - 152.400
[mm]
3/64 | 6
["]
III
Corrosion Resistance
EPDM rubber is resistant to water, steam, ozone, alkali, alcools, ketones, esters, glycols, salt solutions and oxidizing substances, mild acids, detergents and several organic and inorganic bases. Balls are not resisting in contact with petrol, diesel oil, greases, mineral oils and aliphatic, aromatic and chlorinated hydrocarbons.
Revision n.12