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KF Components

KF components (DIN 28403, ISO 2861) represent the standard connection for vacuum lines up to nominal size DN50 in rough, fine and high vacuum.

KF Reducing Adapters | 302147
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
1.575 ″
Flange material
Stainless steel 304L
Shape
Straight
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
40 mm
Flange material
Stainless steel 304L
Shape
Straight
Purity class
PCS
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KF Reducing Adapters | 302148
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
1.575 ″
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
40 mm
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PCS
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KF Reducing Adapters | 359656
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
1.575 ″
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PC1
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
40 mm
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PC1
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on request
KF Reducing Adapters | 302149
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
1.575 ″
Flange material
Stainless steel 304L
Shape
Conical
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
40 mm
Flange material
Stainless steel 304L
Shape
Conical
Purity class
PCS
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available
KF Reducing Adapters | 302150
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
1.575 ″
Flange material
Stainless steel 316L
Shape
Conical
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
25
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
40 mm
Flange material
Stainless steel 316L
Shape
Conical
Purity class
PCS
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in production
KF Reducing Adapters | 302151
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
2.165 ″
Flange material
Stainless steel 304L
Shape
Straight
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
55 mm
Flange material
Stainless steel 304L
Shape
Straight
Purity class
PCS
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available
KF Reducing Adapters | 302152
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
2.165 ″
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
55 mm
Flange material
Stainless steel 316L
Shape
Straight
Purity class
PCS
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available
KF Reducing Adapters | 302154
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
2.165 ″
Flange material
Stainless steel 304L
Shape
Conical
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
55 mm
Flange material
Stainless steel 304L
Shape
Conical
Purity class
PCS
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available
KF Reducing Adapters | 302155
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
2.165 ″
Flange material
Stainless steel 316L
Shape
Conical
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
55 mm
Flange material
Stainless steel 316L
Shape
Conical
Purity class
PCS
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available
KF Reducing Adapters | 302156
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
2.953 ″
Outer diameter 2
2.165 ″
Flange material
Aluminium
Shape
Straight
Purity class
PCS
Nominal diameter
50
Nominal diameter 2
40
Connection type
KF
Outer diameter
75 mm
Outer diameter 2
55 mm
Flange material
Aluminium
Shape
Straight
Purity class
PCS
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available
KF-R Adapters, R-external Thread | 302157
Nominal diameter
50
Connection type
KF
Outer diameter
2.953 ″
Flange material
Stainless steel 316L
R pipe thread
R 2"
Purity class
PCS
Nominal diameter
50
Connection type
KF
Outer diameter
75 mm
Flange material
Stainless steel 316L
R pipe thread
R 2"
Purity class
PCS
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available
KF Centering Rings, O-Ring | 302158
Nominal diameter
50
Connection type
KF
Diameter
2.047 ″
Centering ring material
Stainless steel 304L
Gasket material
NBR
Bakeout temperature
212 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
52 mm
Centering ring material
Stainless steel 304L
Gasket material
NBR
Bakeout temperature
100 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
KF Centering Rings, O-Ring | 302159
Nominal diameter
50
Connection type
KF
Diameter
2.047 ″
Centering ring material
Stainless steel 304L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
52 mm
Centering ring material
Stainless steel 304L
Gasket material
FKM
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
KF Centering Rings, O-Ring | 338858
Nominal diameter
50
Connection type
KF
Diameter
2.047 ″
Centering ring material
Stainless steel 304L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PC4
Nominal diameter
50
Connection type
KF
Diameter
52 mm
Centering ring material
Stainless steel 304L
Gasket material
FKM
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PC4
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on request
KF Centering Rings, O-Ring | 302160
Nominal diameter
50
Connection type
KF
Diameter
2.047 ″
Centering ring material
Stainless steel 316L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
52 mm
Centering ring material
Stainless steel 316L
Gasket material
FKM
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
KF Centering Rings, O-Ring | 302162
Nominal diameter
50
Connection type
KF
Diameter
2.047 ″
Centering ring material
Stainless steel 316L
Gasket material
FKM low outgassing
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
52 mm
Centering ring material
Stainless steel 316L
Gasket material
FKM low outgassing
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
KF Outer Centering Rings with Support Ring | 302165
Nominal diameter
50
Connection type
KF
Diameter
3.031 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
NBR
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
77 mm
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
NBR
Purity class
PCS
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available
KF Outer Centering Rings with Support Ring | 302166
Nominal diameter
50
Connection type
KF
Diameter
3.031 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
FKM
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
77 mm
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
FKM
Purity class
PCS
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available
KF Outer Centering Rings with Support Ring | 302167
Nominal diameter
50
Connection type
KF
Diameter
3.031 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
77 mm
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PCS
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in production
KF Outer Centering Rings with Support Ring | 340202
Nominal diameter
50
Connection type
KF
Diameter
3.031 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PC1
Nominal diameter
50
Connection type
KF
Diameter
77 mm
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PC1
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on request
KF Edge Seals | 302168
Connection type
KF
Nominal diameter
50
Diameter 2
3.031 ″
Gasket material
PTFE
Purity class
PCS
Connection type
KF
Nominal diameter
50
Diameter 2
77 mm
Gasket material
PTFE
Purity class
PCS
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available
KF Hose Nipple for PVC Hose | 302169
Nominal diameter
50
Connection type
KF
Outer diameter
2.953 ″
Tube outer diameter
2.008 ″
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
50
Connection type
KF
Outer diameter
75 mm
Tube outer diameter
51 mm
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF Outer Centering Rings with Support Ring | 302170
Nominal diameter
50
Connection type
KF
Diameter
3.031 ″
Centering ring material
PTFE
Support ring material
PTFE
Gasket material
FKM
Purity class
PCS
Nominal diameter
50
Connection type
KF
Diameter
77 mm
Centering ring material
PTFE
Support ring material
PTFE
Gasket material
FKM
Purity class
PCS
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available
KF O-Rings | 302171
Connection type
KF
Nominal diameter
50
Diameter
2.165 ″
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Connection type
KF
Nominal diameter
50
Diameter
55 mm
Gasket material
FKM
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
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