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BUT
Design
    • Provides exceptional extrusion resistance to a paired oring to increase pressure handling capabilities.
    • Ideal in applications where low friction is a priority.
    • Can be used as a backup to a hydraulic seal or an oring.
    • PTFE will 'cold-flow' into an extrusion gap to provide superior extrusion resistance to Nitrile.
Material
    • PTFE
Application
    • Suitable for static and dynamic applications.
    • Suitable for high pressure and heavy duty applications where additional resistance to extrusion is required.
Fluids
    • Hydraulic fluids, petroleum fuels and oils

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Product Code
Description
Availability
Qty
BUT-369
Backup PTFE BS369 - 8.028 X 8.394 X 0.07"
14
BUT-369 - Backup PTFE BS369 - 8.028 X 8.394 X 0.07"
Product Information
Product CodeBUT-369
DescriptionBackup PTFE BS369 - 8.028 X 8.394 X 0.07"
ProfileBUT
Internal Diameter8.028
Outer Diameter8.394
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS369
BUT-172
Backup PTFE BS172 - 8.255 X 8.431 X 0.05"
60
BUT-172 - Backup PTFE BS172 - 8.255 X 8.431 X 0.05"
Product Information
Product CodeBUT-172
DescriptionBackup PTFE BS172 - 8.255 X 8.431 X 0.05"
ProfileBUT
Internal Diameter8.255
Outer Diameter8.431
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS172
BUT-267
Backup PTFE BS267 - 8.255 X 8.493 X 0.049"
0
BUT-267 - Backup PTFE BS267 - 8.255 X 8.493 X 0.049"
Product Information
Product CodeBUT-267
DescriptionBackup PTFE BS267 - 8.255 X 8.493 X 0.049"
ProfileBUT
Internal Diameter8.255
Outer Diameter8.493
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS267
BUT-370
Backup PTFE BS370 - 8.278 X 8.644 X 0.07"
3
BUT-370 - Backup PTFE BS370 - 8.278 X 8.644 X 0.07"
Product Information
Product CodeBUT-370
DescriptionBackup PTFE BS370 - 8.278 X 8.644 X 0.07"
ProfileBUT
Internal Diameter8.278
Outer Diameter8.644
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS370
BUT-446
Backup PTFE BS446 - 8.502 X 8.974 X 0.108"
45
BUT-446 - Backup PTFE BS446 - 8.502 X 8.974 X 0.108"
Product Information
Product CodeBUT-446
DescriptionBackup PTFE BS446 - 8.502 X 8.974 X 0.108"
ProfileBUT
Internal Diameter8.502
Outer Diameter8.974
Seal Height0.108
Max. Temp C260
Alt. Part No.RMS446
BUT-173
Backup PTFE BS173 - 8.505 X 8.681 X 0.05"
61
BUT-173 - Backup PTFE BS173 - 8.505 X 8.681 X 0.05"
Product Information
Product CodeBUT-173
DescriptionBackup PTFE BS173 - 8.505 X 8.681 X 0.05"
ProfileBUT
Internal Diameter8.505
Outer Diameter8.681
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS173
BUT-268
Backup PTFE BS268 - 8.505 X 8.743 X 0.049"
0
BUT-268 - Backup PTFE BS268 - 8.505 X 8.743 X 0.049"
Product Information
Product CodeBUT-268
DescriptionBackup PTFE BS268 - 8.505 X 8.743 X 0.049"
ProfileBUT
Internal Diameter8.505
Outer Diameter8.743
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS268
BUT-371
Backup PTFE BS371 - 8.528 X 8.894 X 0.07"
0
BUT-371 - Backup PTFE BS371 - 8.528 X 8.894 X 0.07"
Product Information
Product CodeBUT-371
DescriptionBackup PTFE BS371 - 8.528 X 8.894 X 0.07"
ProfileBUT
Internal Diameter8.528
Outer Diameter8.894
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS371
BUT-174
Backup PTFE BS174 - 8.755 X 8.931 X 0.05"
0
BUT-174 - Backup PTFE BS174 - 8.755 X 8.931 X 0.05"
Product Information
Product CodeBUT-174
DescriptionBackup PTFE BS174 - 8.755 X 8.931 X 0.05"
ProfileBUT
Internal Diameter8.755
Outer Diameter8.931
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS174
BUT-269
Backup PTFE BS269 - 8.755 X 8.993 X 0.049"
13
BUT-269 - Backup PTFE BS269 - 8.755 X 8.993 X 0.049"
Product Information
Product CodeBUT-269
DescriptionBackup PTFE BS269 - 8.755 X 8.993 X 0.049"
ProfileBUT
Internal Diameter8.755
Outer Diameter8.993
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS269
BUT-436
Backup PTFE BS436 - 8.926 X 9.398 X 0.105"
18
BUT-436 - Backup PTFE BS436 - 8.926 X 9.398 X 0.105"
Product Information
Product CodeBUT-436
DescriptionBackup PTFE BS436 - 8.926 X 9.398 X 0.105"
ProfileBUT
Internal Diameter8.926
Outer Diameter9.398
Seal Height0.105
Max. Temp C260
Alt. Part No.RMS436
BUTM-P009
Backup PTFE P009 - 9.00 X 12.00 X 1.25mm
15
BUTM-P009 - Backup PTFE P009 - 9.00 X 12.00 X 1.25mm
Product Information
Product CodeBUTM-P009
DescriptionBackup PTFE P009 - 9.00 X 12.00 X 1.25mm
ProfileBUT
Internal Diameter9.00
Outer Diameter12.00
Seal Height1.25
Max. Temp C260
BUT-447
Backup PTFE BS447 - 9.002 X 9.474 X 0.108"
1
BUT-447 - Backup PTFE BS447 - 9.002 X 9.474 X 0.108"
Product Information
Product CodeBUT-447
DescriptionBackup PTFE BS447 - 9.002 X 9.474 X 0.108"
ProfileBUT
Internal Diameter9.002
Outer Diameter9.474
Seal Height0.108
Max. Temp C260
Alt. Part No.RMS447
BUT-175
Backup PTFE BS175 - 9.005 X 9.181 X 0.05"
0
BUT-175 - Backup PTFE BS175 - 9.005 X 9.181 X 0.05"
Product Information
Product CodeBUT-175
DescriptionBackup PTFE BS175 - 9.005 X 9.181 X 0.05"
ProfileBUT
Internal Diameter9.005
Outer Diameter9.181
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS175
BUT-270
Backup PTFE BS270 - 9.005 X 9.243 X 0.049"
0
BUT-270 - Backup PTFE BS270 - 9.005 X 9.243 X 0.049"
Product Information
Product CodeBUT-270
DescriptionBackup PTFE BS270 - 9.005 X 9.243 X 0.049"
ProfileBUT
Internal Diameter9.005
Outer Diameter9.243
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS270
BUT-373
Backup PTFE BS373 - 9.028 X 9.394 X 0.07"
13
BUT-373 - Backup PTFE BS373 - 9.028 X 9.394 X 0.07"
Product Information
Product CodeBUT-373
DescriptionBackup PTFE BS373 - 9.028 X 9.394 X 0.07"
ProfileBUT
Internal Diameter9.028
Outer Diameter9.394
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS373
BUT-176
Backup PTFE BS176 - 9.255 X 9.431 X 0.05"
0
BUT-176 - Backup PTFE BS176 - 9.255 X 9.431 X 0.05"
Product Information
Product CodeBUT-176
DescriptionBackup PTFE BS176 - 9.255 X 9.431 X 0.05"
ProfileBUT
Internal Diameter9.255
Outer Diameter9.431
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS176
BUT-271
Backup PTFE BS271 - 9.255 X 9.493 X 0.049"
0
BUT-271 - Backup PTFE BS271 - 9.255 X 9.493 X 0.049"
Product Information
Product CodeBUT-271
DescriptionBackup PTFE BS271 - 9.255 X 9.493 X 0.049"
ProfileBUT
Internal Diameter9.255
Outer Diameter9.493
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS271
BUT-374
Backup PTFE BS374 - 9.278 X 9.644 X 0.07"
1
BUT-374 - Backup PTFE BS374 - 9.278 X 9.644 X 0.07"
Product Information
Product CodeBUT-374
DescriptionBackup PTFE BS374 - 9.278 X 9.644 X 0.07"
ProfileBUT
Internal Diameter9.278
Outer Diameter9.644
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS374
BUT-448
Backup PTFE BS448 - 9.502 X 9.974 X 0.108" 75172305 241.35 X 253.34 X 2.70mm
0
BUT-448 - Backup PTFE BS448 - 9.502 X 9.974 X 0.108" 75172305 241.35 X 253.34 X 2.70mm
Product Information
Product CodeBUT-448
DescriptionBackup PTFE BS448 - 9.502 X 9.974 X 0.108" 75172305 241.35 X 253.34 X 2.70mm
ProfileBUT
Internal Diameter9.502
Outer Diameter9.974
Seal Height0.108
Max. Temp C260
Alt. Part No.RMS448
BUT-177
Backup PTFE BS177 - 9.505 X 9.681 X 0.05"
0
BUT-177 - Backup PTFE BS177 - 9.505 X 9.681 X 0.05"
Product Information
Product CodeBUT-177
DescriptionBackup PTFE BS177 - 9.505 X 9.681 X 0.05"
ProfileBUT
Internal Diameter9.505
Outer Diameter9.681
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS177
BUT-272
Backup PTFE BS272 - 9.505 X 9.743 X 0.049"
0
BUT-272 - Backup PTFE BS272 - 9.505 X 9.743 X 0.049"
Product Information
Product CodeBUT-272
DescriptionBackup PTFE BS272 - 9.505 X 9.743 X 0.049"
ProfileBUT
Internal Diameter9.505
Outer Diameter9.743
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS272
BUT-375
Backup PTFE BS375 - 9.528 X 9.894 X 0.07"
13
BUT-375 - Backup PTFE BS375 - 9.528 X 9.894 X 0.07"
Product Information
Product CodeBUT-375
DescriptionBackup PTFE BS375 - 9.528 X 9.894 X 0.07"
ProfileBUT
Internal Diameter9.528
Outer Diameter9.894
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS375
BUT-178
Backup PTFE BS178 - 9.755 X 9.931 X 0.05"
0
BUT-178 - Backup PTFE BS178 - 9.755 X 9.931 X 0.05"
Product Information
Product CodeBUT-178
DescriptionBackup PTFE BS178 - 9.755 X 9.931 X 0.05"
ProfileBUT
Internal Diameter9.755
Outer Diameter9.931
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS178
 
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