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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-031
Backup PTFE BS031 - 1.773 X 1.879 X 0.049"
76
BUT-031 - Backup PTFE BS031 - 1.773 X 1.879 X 0.049"
Product Information
Product CodeBUT-031
DescriptionBackup PTFE BS031 - 1.773 X 1.879 X 0.049"
ProfileBUT
Internal Diameter1.773
Outer Diameter1.879
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS031
BUT-133
Backup PTFE BS133 - 1.834 X 2.006 X 0.049"
48
BUT-133 - Backup PTFE BS133 - 1.834 X 2.006 X 0.049"
Product Information
Product CodeBUT-133
DescriptionBackup PTFE BS133 - 1.834 X 2.006 X 0.049"
ProfileBUT
Internal Diameter1.834
Outer Diameter2.006
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS133
BUT-328
Backup PTFE BS328 - 1.888 X 2.254 X 0.07"
87
BUT-328 - Backup PTFE BS328 - 1.888 X 2.254 X 0.07"
Product Information
Product CodeBUT-328
DescriptionBackup PTFE BS328 - 1.888 X 2.254 X 0.07"
ProfileBUT
Internal Diameter1.888
Outer Diameter2.254
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS328
BUT-134
Backup PTFE BS134 - 1.897 X 2.069 X 0.049"
13
BUT-134 - Backup PTFE BS134 - 1.897 X 2.069 X 0.049"
Product Information
Product CodeBUT-134
DescriptionBackup PTFE BS134 - 1.897 X 2.069 X 0.049"
ProfileBUT
Internal Diameter1.897
Outer Diameter2.069
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS134
BUT-225
Backup PTFE BS225 - 1.897 X 2.135 X 0.049"
70
BUT-225 - Backup PTFE BS225 - 1.897 X 2.135 X 0.049"
Product Information
Product CodeBUT-225
DescriptionBackup PTFE BS225 - 1.897 X 2.135 X 0.049"
ProfileBUT
Internal Diameter1.897
Outer Diameter2.135
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS225
BUT-032
Backup PTFE BS032 - 1.898 X 2.004 X 0.049"
6
BUT-032 - Backup PTFE BS032 - 1.898 X 2.004 X 0.049"
Product Information
Product CodeBUT-032
DescriptionBackup PTFE BS032 - 1.898 X 2.004 X 0.049"
ProfileBUT
Internal Diameter1.898
Outer Diameter2.004
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS032
BUT-135
Backup PTFE BS135 - 1.959 X 2.131 X 0.049" 75171883 49.33 X 53.80 X 1.27mm ST135S OLD CODE
24
BUT-135 - Backup PTFE BS135 - 1.959 X 2.131 X 0.049" 75171883 49.33 X 53.80 X 1.27mm ST135S OLD CODE
Product Information
Product CodeBUT-135
DescriptionBackup PTFE BS135 - 1.959 X 2.131 X 0.049" 75171883 49.33 X 53.80 X 1.27mm ST135S OLD CODE
ProfileBUT
Internal Diameter1.959
Outer Diameter2.131
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS135
BUT-329
Backup PTFE BS329 - 2.013 X 2.379 X 0.07" 75172141 ST329S OLD CODE
50
BUT-329 - Backup PTFE BS329 - 2.013 X 2.379 X 0.07" 75172141 ST329S OLD CODE
Product Information
Product CodeBUT-329
DescriptionBackup PTFE BS329 - 2.013 X 2.379 X 0.07" 75172141 ST329S OLD CODE
ProfileBUT
Internal Diameter2.013
Outer Diameter2.379
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS329
BUT-136
Backup PTFE BS136 - 2.022 X 2.194 X 0.049"
38
BUT-136 - Backup PTFE BS136 - 2.022 X 2.194 X 0.049"
Product Information
Product CodeBUT-136
DescriptionBackup PTFE BS136 - 2.022 X 2.194 X 0.049"
ProfileBUT
Internal Diameter2.022
Outer Diameter2.194
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS136
BUT-226
Backup PTFE BS226 - 2.022 X 2.26 X 0.049"
211
BUT-226 - Backup PTFE BS226 - 2.022 X 2.26 X 0.049"
Product Information
Product CodeBUT-226
DescriptionBackup PTFE BS226 - 2.022 X 2.26 X 0.049"
ProfileBUT
Internal Diameter2.022
Outer Diameter2.260
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS226
BUT-033
Backup PTFE BS033 - 2.023 X 2.129 X 0.049"
0
BUT-033 - Backup PTFE BS033 - 2.023 X 2.129 X 0.049"
Product Information
Product CodeBUT-033
DescriptionBackup PTFE BS033 - 2.023 X 2.129 X 0.049"
ProfileBUT
Internal Diameter2.023
Outer Diameter2.129
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS033
BUT-137
Backup PTFE BS137 - 2.084 X 2.256 X 0.049"
5
BUT-137 - Backup PTFE BS137 - 2.084 X 2.256 X 0.049"
Product Information
Product CodeBUT-137
DescriptionBackup PTFE BS137 - 2.084 X 2.256 X 0.049"
ProfileBUT
Internal Diameter2.084
Outer Diameter2.256
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS137
BUT-338
Backup PTFE BS338 - 2.143 X 2.509 X 0.07" 75089552
24
BUT-338 - Backup PTFE BS338 - 2.143 X 2.509 X 0.07" 75089552
Product Information
Product CodeBUT-338
DescriptionBackup PTFE BS338 - 2.143 X 2.509 X 0.07" 75089552
ProfileBUT
Internal Diameter2.143
Outer Diameter2.509
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS338
BUT-138
Backup PTFE BS138 - 2.147 X 2.319 X 0.049"
123
BUT-138 - Backup PTFE BS138 - 2.147 X 2.319 X 0.049"
Product Information
Product CodeBUT-138
DescriptionBackup PTFE BS138 - 2.147 X 2.319 X 0.049"
ProfileBUT
Internal Diameter2.147
Outer Diameter2.319
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS138
BUT-227
Backup PTFE BS227 - 2.147 X 2.385 X 0.049"
59
BUT-227 - Backup PTFE BS227 - 2.147 X 2.385 X 0.049"
Product Information
Product CodeBUT-227
DescriptionBackup PTFE BS227 - 2.147 X 2.385 X 0.049"
ProfileBUT
Internal Diameter2.147
Outer Diameter2.385
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS227
BUT-034
Backup PTFE BS034 - 2.148 X 2.254 X 0.049"
51
BUT-034 - Backup PTFE BS034 - 2.148 X 2.254 X 0.049"
Product Information
Product CodeBUT-034
DescriptionBackup PTFE BS034 - 2.148 X 2.254 X 0.049"
ProfileBUT
Internal Diameter2.148
Outer Diameter2.254
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS034
BUT-139
Backup PTFE BS139 - 2.209 X 2.381 X 0.049"
473
BUT-139 - Backup PTFE BS139 - 2.209 X 2.381 X 0.049"
Product Information
Product CodeBUT-139
DescriptionBackup PTFE BS139 - 2.209 X 2.381 X 0.049"
ProfileBUT
Internal Diameter2.209
Outer Diameter2.381
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS139
BUT-140
Backup PTFE BS140 - 2.254 X 2.43 X 0.05" 75089337 ST140S OLD CODE 57.25 X 61.72 X 1.20mm
43
BUT-140 - Backup PTFE BS140 - 2.254 X 2.43 X 0.05" 75089337 ST140S OLD CODE 57.25 X 61.72 X 1.20mm
Product Information
Product CodeBUT-140
DescriptionBackup PTFE BS140 - 2.254 X 2.43 X 0.05" 75089337 ST140S OLD CODE 57.25 X 61.72 X 1.20mm
ProfileBUT
Internal Diameter2.254
Outer Diameter2.430
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS140
BUT-331
Backup PTFE BS331 - 2.268 X 2.634 X 0.07"
45
BUT-331 - Backup PTFE BS331 - 2.268 X 2.634 X 0.07"
Product Information
Product CodeBUT-331
DescriptionBackup PTFE BS331 - 2.268 X 2.634 X 0.07"
ProfileBUT
Internal Diameter2.268
Outer Diameter2.634
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS331
BUT-228
Backup PTFE BS228 - 2.272 X 2.51 X 0.049"
368
BUT-228 - Backup PTFE BS228 - 2.272 X 2.51 X 0.049"
Product Information
Product CodeBUT-228
DescriptionBackup PTFE BS228 - 2.272 X 2.51 X 0.049"
ProfileBUT
Internal Diameter2.272
Outer Diameter2.510
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS228
BUT-035
Backup PTFE BS035 - 2.273 X 2.379 X 0.049"
99
BUT-035 - Backup PTFE BS035 - 2.273 X 2.379 X 0.049"
Product Information
Product CodeBUT-035
DescriptionBackup PTFE BS035 - 2.273 X 2.379 X 0.049"
ProfileBUT
Internal Diameter2.273
Outer Diameter2.379
Seal Height0.049
Max. Temp C260
Alt. Part No.RMS035
BUT-141
Backup PTFE BS141 - 2.317 X 2.493 X 0.05"
27
BUT-141 - Backup PTFE BS141 - 2.317 X 2.493 X 0.05"
Product Information
Product CodeBUT-141
DescriptionBackup PTFE BS141 - 2.317 X 2.493 X 0.05"
ProfileBUT
Internal Diameter2.317
Outer Diameter2.493
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS141
BUT-142
Backup PTFE BS142 - 2.379 X 2.555 X 0.05"
20
BUT-142 - Backup PTFE BS142 - 2.379 X 2.555 X 0.05"
Product Information
Product CodeBUT-142
DescriptionBackup PTFE BS142 - 2.379 X 2.555 X 0.05"
ProfileBUT
Internal Diameter2.379
Outer Diameter2.555
Seal Height0.050
Max. Temp C260
Alt. Part No.RMS142
BUT-332
Backup PTFE BS332 - 2.383 X 2.749 X 0.07"
14
BUT-332 - Backup PTFE BS332 - 2.383 X 2.749 X 0.07"
Product Information
Product CodeBUT-332
DescriptionBackup PTFE BS332 - 2.383 X 2.749 X 0.07"
ProfileBUT
Internal Diameter2.383
Outer Diameter2.749
Seal Height0.070
Max. Temp C260
Alt. Part No.RMS332
 
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