Kalrez® perfluoroelastomer parts are available in a number of different compounds that are formulated to optimize properties and give the best possible performance in various applications. Modification of the finished properties is achieved by use of fillers and other additives.
Table belows summarizes the basic physical properties of the most commonly used compounds. Descriptions of the key attributes of each compound and their general areas of application follow.
Typical Physical Propertiesa
Compounds
Standard
Specialty
6375
7075
4079
1050LF
1058
3018
2037
Maximum Application Temperature, oC (oF)b
275 (527)
327 (620)
316 (600)
288 (550)
260 (500)
288 (500)
220 (500)
Durometer Hardness, Shore, Ac, points �5
75
75
75
82
65
91
79
100% Modulus,d
psi MPa
1,050 7.24
1,100 7.58
1,050 7.24
1,800 12.24
675 4.65
2.450 16.88
900 6.20
Tensile Strength at Break d,
psi MPa
2,200 15.16
2,600 17.91
2,450 16.88
2,700 18.60
1,300 8.96
3,150 21.70
2,450 16.88
Elongation at Break d, %
160
160
150
125
180
125
200
Compression Set e, %
70 hr at 204oC (400oF)
25
12
25
35
40
35
27
Tr10, f oC (oF)
-3 (26)
-4 (24)
-2 (28)
-4 (24)
-
5 (41)
3 (37)
a Not to be used for specifations
b DuPont Performance Elastomers proprietary method; performance will vary with seal design and application specifics
