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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 O-Rings | 404521
Connection type
KF
Nominal diameter
25
Diameter
1.102 ″
Gasket material
MVQ
Bakeout temperature
392 °F
Min. operating temperature
-67 °F
Purity class
PCS
Connection type
KF
Nominal diameter
25
Diameter
28 mm
Gasket material
MVQ
Bakeout temperature
200 °C
Min. operating temperature
-55 °C
Purity class
PCS
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available
KF Centering Rings, O-Ring | 301882
Nominal diameter
25
Connection type
KF
Diameter
1.024 ″
Centering ring material
Stainless steel 304L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
26 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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in production
KF Centering Rings, O-Ring | 301883
Nominal diameter
25
Connection type
KF
Diameter
1.024 ″
Centering ring material
Stainless steel 316L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
26 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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in production
KF Centering Rings, O-Ring | 340142
Nominal diameter
25
Connection type
KF
Diameter
1.024 ″
Centering ring material
Stainless steel 316L
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
26 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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on request
KF Centering Rings, O-Ring | 301885
Nominal diameter
25
Connection type
KF
Diameter
1.024 ″
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
25
Connection type
KF
Diameter
26 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 | 301889
Nominal diameter
25
Connection type
KF
Diameter
1.654 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
NBR
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
42 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 | 301890
Nominal diameter
25
Connection type
KF
Diameter
1.654 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 304L
Gasket material
FKM
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
42 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 | 301891
Nominal diameter
25
Connection type
KF
Diameter
1.654 ″
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
42 mm
Centering ring material
Aluminium
Support ring material
Stainless steel 316L
Gasket material
FKM
Purity class
PCS
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available
KF Hose Nipple for PVC Hose | 301892
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube outer diameter
0.984 ″
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube outer diameter
25 mm
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF Outer Centering Rings with Support Ring | 301895
Nominal diameter
25
Connection type
KF
Diameter
1.654 ″
Centering ring material
PTFE
Support ring material
PTFE
Gasket material
FKM
Purity class
PCS
Nominal diameter
25
Connection type
KF
Diameter
42 mm
Centering ring material
PTFE
Support ring material
PTFE
Gasket material
FKM
Purity class
PCS
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in production
KF O-Rings | 301897
Connection type
KF
Nominal diameter
25
Diameter
1.102 ″
Gasket material
FKM
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Connection type
KF
Nominal diameter
25
Diameter
28 mm
Gasket material
FKM
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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in production
KF O-Rings | 307187
Connection type
KF
Nominal diameter
25
Diameter
1.102 ″
Gasket material
FKM low outgassing
Bakeout temperature
302 °F
Min. operating temperature
14 °F
Purity class
PCS
Connection type
KF
Nominal diameter
25
Diameter
28 mm
Gasket material
FKM low outgassing
Bakeout temperature
150 °C
Min. operating temperature
-10 °C
Purity class
PCS
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available
KF-Clamps, metric | 302209
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube metric
0.394 ″
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube metric
10 mm
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Clamps, imperial | 302211
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube imperial
1/2 in
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube imperial
1/2 in
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Clamps, metric | 302212
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube metric
0.236 ″
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube metric
6 mm
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Clamps, imperial | 302213
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube imperial
1/4 in
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube imperial
1/4 in
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Clamps, metric | 302214
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube metric
0.315 ″
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube metric
8 mm
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Clamps, imperial | 302215
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Tube imperial
3/8 in
Flange material
Stainless steel 316L
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Tube imperial
3/8 in
Flange material
Stainless steel 316L
Purity class
PCS
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available
KF-Face-Seal-Screw Connection, female | 302231
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PCS
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in production
KF-Face-Seal-Screw Connection, male | 302233
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PCS
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available
KF-Face-Seal-Screw Connection, male | 347516
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PC2
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/2 in
Purity class
PC2
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on request
KF-Face-Seal-Screw Connection, female | 302237
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PCS
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available
KF-Face-Seal-Screw Connection, female | 318934
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PC2+
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PC2+
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available
KF-Face-Seal-Screw Connection, male | 302238
Nominal diameter
25
Connection type
KF
Outer diameter
1.575 ″
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PCS
Nominal diameter
25
Connection type
KF
Outer diameter
40 mm
Flange material
Stainless steel 316L
Tube imperial
1/4 in
Purity class
PCS
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available
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