FFKM Rubber O-ring

FFKM Rubber O-ring

Kaxite Seal manufactures & distributes perfluoroelastomer FFKM Rubber O-ring, seals, and gaskets manufactured from a variety of FFKM materials. We can provide FFKM o-rings in standard sizes as well as seals and gaskets in custom configurations to match your unique specifications.We manufacture FFKM o-rings, gaskets, and seals from three popular resins

Model:KC600

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Product Description


Perfluoroelastomer FFKM is a synthetic rubber that contains higher amounts of fluorine than standard FKM – the prefix “per” signifies that the compound is fully fluorinated. This higher fluorine concentration gives FFKM even greater high temperature and chemical resistance than FKM. With its superior temperature resistance and nearly universal chemical compatibility, gaskets and seals produced from FFKM are often selected for critical applications where seal failure can result in serious harm to personnel or the creation of an extremely hazardous condition. FFKM Rubber O-ring


FFKM material is often used to make gaskets, seals and O-rings that involve contact with highly corrosive fluids or hydrocarbons, as well as applications with maximum continuous service temperatures up to 327°C. These gaskets and seals also provide low outgassing in vacuum-sealing applications. Applications which are suitable for the use of FFKM gaskets and seals are often found in the aerospace, energy, pharmaceutical, semiconductor, and process industries. Kalrez®, a registered trademark of The Chemours Company, is an example of a perfluoroelastomer.


A series of Kalflon® FFKM O-Rings is developed by us Kaxite in order to help our customer can easily transfer from previous suppliers.  Customers who used Kalrez® products before can also find their counterparts in our product list.  We have chemical resistance compound FFKM O-rings series and temperature resistance compound FFKM O-rings series, and high purity FFKM series. Customized compound design is welcome by request. All data sheet can be found from our list below. We offer standard O-ring in AS-568, JIS B2401, JIS P, JIS V, JIS G, JIS S and international metric.


Kalflon™ Chemical Resistant FFKM Rubber Part


Equivalent product : Kalrez® 6375, Chemraz® 505

Typical Physical Properties

KA480E

KA480F

KA482E

KA500E

KA600E

KA300F

Hardness, Shore A

75

74

76

81

90

62

Color

Black

White

Black

Black

Black

White

100% Modulus, Mpa

17.5

4.5

11.6

11

17

4.5

Tensile Strength at Break, Mpa

17.5

10

15.8

18.5

21

14.1

Elongation at Break, %

177

190

129

150

125

188

Compression Sets,(%, 70 hr @ 200 °C)

22

25

20

24

30

     30

Maximum Continuous Service Temp, °C

230

250

275

250

250
    250

ASTM D2240 (pellet test specimen)
ASTM D412 (dumbbell test specimen)
ASTM D395B (AS568 K214 O-ring test specimen)
ASTM D412 (dumbbell test specimens)
ASTM D395B (AS214 O-ring test specimens)


Kalflon™ High Temperature Resistant FFKM Rubber Part 



Equivalent product : Kalrez® 4079

Typical Physical Properties

KT480E

KT480F

KT600E

KT300F

Hardness, Shore A

74

74

91

61

Color

Black

Cream White

Black

Black

100% Modulus, Mpa

6

4.5

13.5

3.3

Tensile Strength at Break, Mpa

14

7.5

16.5

11

Elongation at Break, %

260

262

115

189

Compression Sets,(%, 70 hr @ 200 °C)

23

24

28

11

Maximum Continuous Service Temp, °C

330

330

330

330

ASTM D2240 (pellet test specimen)
ASTM D412 (dumbbell test specimen)
ASTM D395B (AS568 K214 O-ring test specimen)
ASTM D412 (dumbbell test specimens)
ASTM D395B (AS214 O-ring test specimens)

Kalflon™ High-pure, low outgassing FFKM Rubber Part 


Equivalent product : Kalrez® 8100, 9100, 9300

Typical Physical Properties

KP300L

KP480G

KP500F

KA500TF

Hardness, Shore A

65

74

76

81

Color

Transparent dark 

Transparent dark

Cream White

White

100% Modulus, Mpa

3.3

6.2

4.7

8

Tensile Strength at Break, Mpa

13

17

11.5

12.5

Elongation at Break, %

215

251

303

178

Compression Sets,(%, 70 hr @ 200 °C)

12.5

17.5

25

35

Maximum Continuous Service Temp, °C

315

315

315

250

ASTM D2240 (pellet test specimen)
ASTM D412 (dumbbell test specimen)
ASTM D395B (AS568 K214 O-ring test specimen)
ASTM D412 (dumbbell test specimens)
ASTM D395B (AS214 O-ring test specimens)


Kalflon™ FDA Standard FFKM Rubber Part 

Typical Physical Properties

KF810F

KP810E

Hardness, Shore A

65

74

Color

White

Black

100% Modulus, Mpa

5.8

16

Tensile Strength at Break, Mpa

12.2

17.5

Elongation at Break, %

215

180

Compression Sets,(%, 70 hr @ 200 °C)

28

17

Maximum Continuous Service Temp, °C

250

250

ASTM D2240 (pellet test specimen)
ASTM D412 (dumbbell test specimen)
ASTM D395B (AS568 K214 O-ring test specimen)
ASTM D412 (dumbbell test specimens)
ASTM D395B (AS214 O-ring test specimens)


Kalflon™ Low compression set, Thermal resistant FFKM Rubber Part 


Equivalent product : Kalrez® 7075

Typical Physical Properties

KLS410

KLS450

Hardness, Shore A

74

74

Color

Black

Black

100% Modulus, Mpa

10.5

8.8

Tensile Strength at Break, Mpa

15

12.5

Elongation at Break, %

182

183

Compression Sets,(%, 70 hr @ 200 °C)

15

12.5

Maximum Continuous Service Temp, °C

250

330

ASTM D2240 (pellet test specimen)
ASTM D412 (dumbbell test specimen)
ASTM D395B (AS568 K214 O-ring test specimen)
ASTM D412 (dumbbell test specimens)
ASTM D395B (AS214 O-ring test specimens)



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