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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-161
Backup PTFE BS161 - 5.505 X 5.681 X 0.05"
0
BUT-161 - Backup PTFE BS161 - 5.505 X 5.681 X 0.05"
Product Information
Product CodeBUT-161
DescriptionBackup PTFE BS161 - 5.505 X 5.681 X 0.05"
ProfileBUT
Internal Diameter5.505
Outer Diameter5.681
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS161
BUT-254
Backup PTFE BS254 - 5.505 X 5.743 X 0.049"
25
BUT-254 - Backup PTFE BS254 - 5.505 X 5.743 X 0.049"
Product Information
Product CodeBUT-254
DescriptionBackup PTFE BS254 - 5.505 X 5.743 X 0.049"
ProfileBUT
Internal Diameter5.505
Outer Diameter5.743
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS254
BUT-357
Backup PTFE BS357 - 5.528 X 5.894 X 0.07"
40
BUT-357 - Backup PTFE BS357 - 5.528 X 5.894 X 0.07"
Product Information
Product CodeBUT-357
DescriptionBackup PTFE BS357 - 5.528 X 5.894 X 0.07"
ProfileBUT
Internal Diameter5.528
Outer Diameter5.894
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS357
BUT-433
Backup PTFE BS433 - 5.551 X 6.023 X 0.105"
200
BUT-433 - Backup PTFE BS433 - 5.551 X 6.023 X 0.105"
Product Information
Product CodeBUT-433
DescriptionBackup PTFE BS433 - 5.551 X 6.023 X 0.105"
ProfileBUT
Internal Diameter5.551
Outer Diameter6.023
Seal Height0.105
Max. Temp C260
Alt. Part No.RMS433
BUT-255
Backup PTFE BS255 - 5.63 X 5.868 X 0.049"
2
BUT-255 - Backup PTFE BS255 - 5.63 X 5.868 X 0.049"
Product Information
Product CodeBUT-255
DescriptionBackup PTFE BS255 - 5.63 X 5.868 X 0.049"
ProfileBUT
Internal Diameter5.630
Outer Diameter5.868
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS255
BUT-358
Backup PTFE BS358 - 5.653 X 6.019 X 0.07"
3
BUT-358 - Backup PTFE BS358 - 5.653 X 6.019 X 0.07"
Product Information
Product CodeBUT-358
DescriptionBackup PTFE BS358 - 5.653 X 6.019 X 0.07"
ProfileBUT
Internal Diameter5.653
Outer Diameter6.019
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS358
BUT-434
Backup PTFE BS434 - 5.676 X 6.148 X 0.105"
19
BUT-434 - Backup PTFE BS434 - 5.676 X 6.148 X 0.105"
Product Information
Product CodeBUT-434
DescriptionBackup PTFE BS434 - 5.676 X 6.148 X 0.105"
ProfileBUT
Internal Diameter5.676
Outer Diameter6.148
Seal Height0.105
Max. Temp C260
Alt. Part No.RMS434
BUT-162
Backup PTFE BS162 - 5.755 X 5.931 X 0.05"
40
BUT-162 - Backup PTFE BS162 - 5.755 X 5.931 X 0.05"
Product Information
Product CodeBUT-162
DescriptionBackup PTFE BS162 - 5.755 X 5.931 X 0.05"
ProfileBUT
Internal Diameter5.755
Outer Diameter5.931
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS162
BUT-256
Backup PTFE BS256 - 5.755 X 5.993 X 0.049"
22
BUT-256 - Backup PTFE BS256 - 5.755 X 5.993 X 0.049"
Product Information
Product CodeBUT-256
DescriptionBackup PTFE BS256 - 5.755 X 5.993 X 0.049"
ProfileBUT
Internal Diameter5.755
Outer Diameter5.993
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS256
BUT-435
Backup PTFE BS435 - 5.801 X 6.273 X 0.105"
5
BUT-435 - Backup PTFE BS435 - 5.801 X 6.273 X 0.105"
Product Information
Product CodeBUT-435
DescriptionBackup PTFE BS435 - 5.801 X 6.273 X 0.105"
ProfileBUT
Internal Diameter5.801
Outer Diameter6.273
Seal Height0.105
Max. Temp C260
Alt. Part No.RMS435
BUT-257
Backup PTFE BS257 - 5.88 X 6.118 X 0.049"
34
BUT-257 - Backup PTFE BS257 - 5.88 X 6.118 X 0.049"
Product Information
Product CodeBUT-257
DescriptionBackup PTFE BS257 - 5.88 X 6.118 X 0.049"
ProfileBUT
Internal Diameter5.880
Outer Diameter6.118
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS257
BUTM-P006
Backup PTFE P006 - 6.00 X 9.00 X 1.25mm
-
Enquire
BUTM-P006 - Backup PTFE P006 - 6.00 X 9.00 X 1.25mm
Product Information
Product CodeBUTM-P006
DescriptionBackup PTFE P006 - 6.00 X 9.00 X 1.25mm
ProfileBUT
Internal Diameter6.00
Outer Diameter9.00
Seal Height1.25
Max. Temp C260
BUT-163
Backup PTFE BS163 - 6.005 X 6.181 X 0.05"
0
BUT-163 - Backup PTFE BS163 - 6.005 X 6.181 X 0.05"
Product Information
Product CodeBUT-163
DescriptionBackup PTFE BS163 - 6.005 X 6.181 X 0.05"
ProfileBUT
Internal Diameter6.005
Outer Diameter6.181
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS163
BUT-258
Backup PTFE BS258 - 6.005 X 6.243 X 0.049" 75172078 152.40 X 158.44 X 1.20mm ST258S OLD CODE
114
BUT-258 - Backup PTFE BS258 - 6.005 X 6.243 X 0.049" 75172078 152.40 X 158.44 X 1.20mm ST258S OLD CODE
Product Information
Product CodeBUT-258
DescriptionBackup PTFE BS258 - 6.005 X 6.243 X 0.049" 75172078 152.40 X 158.44 X 1.20mm ST258S OLD CODE
ProfileBUT
Internal Diameter6.005
Outer Diameter6.243
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS258
BUT-361
Backup PTFE BS361 - 6.028 X 6.394 X 0.07"
2
BUT-361 - Backup PTFE BS361 - 6.028 X 6.394 X 0.07"
Product Information
Product CodeBUT-361
DescriptionBackup PTFE BS361 - 6.028 X 6.394 X 0.07"
ProfileBUT
Internal Diameter6.028
Outer Diameter6.394
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS361
BUT-164
Backup PTFE BS164 - 6.255 X 6.431 X 0.05"
0
BUT-164 - Backup PTFE BS164 - 6.255 X 6.431 X 0.05"
Product Information
Product CodeBUT-164
DescriptionBackup PTFE BS164 - 6.255 X 6.431 X 0.05"
ProfileBUT
Internal Diameter6.255
Outer Diameter6.431
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS164
BUT-259
Backup PTFE BS259 - 6.255 X 6.493 X 0.049"
210
BUT-259 - Backup PTFE BS259 - 6.255 X 6.493 X 0.049"
Product Information
Product CodeBUT-259
DescriptionBackup PTFE BS259 - 6.255 X 6.493 X 0.049"
ProfileBUT
Internal Diameter6.255
Outer Diameter6.493
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS259
BUT-362
Backup PTFE BS362 - 6.278 X 6.644 X 0.07"
30
BUT-362 - Backup PTFE BS362 - 6.278 X 6.644 X 0.07"
Product Information
Product CodeBUT-362
DescriptionBackup PTFE BS362 - 6.278 X 6.644 X 0.07"
ProfileBUT
Internal Diameter6.278
Outer Diameter6.644
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS362
BUT-439
Backup PTFE BS439 - 6.502 X 6.974 X 0.108"
2
BUT-439 - Backup PTFE BS439 - 6.502 X 6.974 X 0.108"
Product Information
Product CodeBUT-439
DescriptionBackup PTFE BS439 - 6.502 X 6.974 X 0.108"
ProfileBUT
Internal Diameter6.502
Outer Diameter6.974
Seal Height0.108
Max. Temp C260
Alt. Part No.RMS439
BUT-165
Backup PTFE BS165 - 6.505 X 6.681 X 0.05"
0
BUT-165 - Backup PTFE BS165 - 6.505 X 6.681 X 0.05"
Product Information
Product CodeBUT-165
DescriptionBackup PTFE BS165 - 6.505 X 6.681 X 0.05"
ProfileBUT
Internal Diameter6.505
Outer Diameter6.681
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS165
BUT-260
Backup PTFE BS260 - 6.505 X 6.743 X 0.049"
0
BUT-260 - Backup PTFE BS260 - 6.505 X 6.743 X 0.049"
Product Information
Product CodeBUT-260
DescriptionBackup PTFE BS260 - 6.505 X 6.743 X 0.049"
ProfileBUT
Internal Diameter6.505
Outer Diameter6.743
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS260
BUT-363
Backup PTFE BS363 - 6.528 X 6.894 X 0.07"
3
BUT-363 - Backup PTFE BS363 - 6.528 X 6.894 X 0.07"
Product Information
Product CodeBUT-363
DescriptionBackup PTFE BS363 - 6.528 X 6.894 X 0.07"
ProfileBUT
Internal Diameter6.528
Outer Diameter6.894
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS363
BUT-440
Backup PTFE BS440 - 6.752 X 7.224 X 0.108"
44
BUT-440 - Backup PTFE BS440 - 6.752 X 7.224 X 0.108"
Product Information
Product CodeBUT-440
DescriptionBackup PTFE BS440 - 6.752 X 7.224 X 0.108"
ProfileBUT
Internal Diameter6.752
Outer Diameter7.224
Seal Height0.108
Max. Temp C260
Alt. Part No.RMS440
BUT-166
Backup PTFE BS166 - 6.755 X 6.931 X 0.05"
0
BUT-166 - Backup PTFE BS166 - 6.755 X 6.931 X 0.05"
Product Information
Product CodeBUT-166
DescriptionBackup PTFE BS166 - 6.755 X 6.931 X 0.05"
ProfileBUT
Internal Diameter6.755
Outer Diameter6.931
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS166
 
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