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BUP
Design
    • Provides exceptional extrusion resistance to a paired oring or seal to increase pressure handling capabilities.
    • High abrasion resistance makes it suitable in contaminated fluids.
    • Can be used as a backup to a hydraulic seal or an oring.
Material
    • 95A Polyurethane.
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
BUP-241
Backup Polyurethane BS241 - 3.875 X 4.125 X 0.040"
0
BUP-241 - Backup Polyurethane BS241 - 3.875 X 4.125 X 0.040"
Product Information
Product CodeBUP-241
DescriptionBackup Polyurethane BS241 - 3.875 X 4.125 X 0.040"
ProfileBUP
Internal Diameter3.875
Outer Diameter4.125
Seal Height0.040
Max. Temp C100
Alt. Part No.R19241
BUP-344
Backup Polyurethane BS344 - 3.875 X 4.250 X 0.055"
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BUP-344 - Backup Polyurethane BS344 - 3.875 X 4.250 X 0.055"
Product Information
Product CodeBUP-344
DescriptionBackup Polyurethane BS344 - 3.875 X 4.250 X 0.055"
ProfileBUP
Internal Diameter3.875
Outer Diameter4.250
Seal Height0.055
Max. Temp C100
Alt. Part No.R19344
BUP-045
Backup Polyurethane BS045 - 4.000 X 4.125 X 0.040"
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BUP-045 - Backup Polyurethane BS045 - 4.000 X 4.125 X 0.040"
Product Information
Product CodeBUP-045
DescriptionBackup Polyurethane BS045 - 4.000 X 4.125 X 0.040"
ProfileBUP
Internal Diameter4.000
Outer Diameter4.125
Seal Height0.040
Max. Temp C100
Alt. Part No.R19045
BUP-155
Backup Polyurethane BS155 - 4.000 X 4.188 X 0.040"
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BUP-155 - Backup Polyurethane BS155 - 4.000 X 4.188 X 0.040"
Product Information
Product CodeBUP-155
DescriptionBackup Polyurethane BS155 - 4.000 X 4.188 X 0.040"
ProfileBUP
Internal Diameter4.000
Outer Diameter4.188
Seal Height0.040
Max. Temp C100
Alt. Part No.R19155
BUP-242
Backup Polyurethane BS242 - 4.000 X 4.250 X 0.040"
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BUP-242 - Backup Polyurethane BS242 - 4.000 X 4.250 X 0.040"
Product Information
Product CodeBUP-242
DescriptionBackup Polyurethane BS242 - 4.000 X 4.250 X 0.040"
ProfileBUP
Internal Diameter4.000
Outer Diameter4.250
Seal Height0.040
Max. Temp C100
Alt. Part No.R19242
BUP-345
Backup Polyurethane BS345 - 4.000 X 4.375 X 0.055"
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BUP-345 - Backup Polyurethane BS345 - 4.000 X 4.375 X 0.055"
Product Information
Product CodeBUP-345
DescriptionBackup Polyurethane BS345 - 4.000 X 4.375 X 0.055"
ProfileBUP
Internal Diameter4.000
Outer Diameter4.375
Seal Height0.055
Max. Temp C100
Alt. Part No.R19345
BUP-243
Backup Polyurethane BS243 - 4.125 X 4.375 X 0.040"
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BUP-243 - Backup Polyurethane BS243 - 4.125 X 4.375 X 0.040"
Product Information
Product CodeBUP-243
DescriptionBackup Polyurethane BS243 - 4.125 X 4.375 X 0.040"
ProfileBUP
Internal Diameter4.125
Outer Diameter4.375
Seal Height0.040
Max. Temp C100
Alt. Part No.R19243
BUP-346
Backup Polyurethane BS346 - 4.125 X 4.500 X 0.055"
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BUP-346 - Backup Polyurethane BS346 - 4.125 X 4.500 X 0.055"
Product Information
Product CodeBUP-346
DescriptionBackup Polyurethane BS346 - 4.125 X 4.500 X 0.055"
ProfileBUP
Internal Diameter4.125
Outer Diameter4.500
Seal Height0.055
Max. Temp C100
Alt. Part No.R19346
BUP-046
Backup Polyurethane BS046 - 4.250 X 4.375 X 0.040"
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BUP-046 - Backup Polyurethane BS046 - 4.250 X 4.375 X 0.040"
Product Information
Product CodeBUP-046
DescriptionBackup Polyurethane BS046 - 4.250 X 4.375 X 0.040"
ProfileBUP
Internal Diameter4.250
Outer Diameter4.375
Seal Height0.040
Max. Temp C100
Alt. Part No.R19046
BUP-156
Backup Polyurethane BS156 - 4.250 X 4.438 X 0.040"
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BUP-156 - Backup Polyurethane BS156 - 4.250 X 4.438 X 0.040"
Product Information
Product CodeBUP-156
DescriptionBackup Polyurethane BS156 - 4.250 X 4.438 X 0.040"
ProfileBUP
Internal Diameter4.250
Outer Diameter4.438
Seal Height0.040
Max. Temp C100
Alt. Part No.R19156
BUP-244
Backup Polyurethane BS244 - 4.250 X 4.500 X 0.040"
0
BUP-244 - Backup Polyurethane BS244 - 4.250 X 4.500 X 0.040"
Product Information
Product CodeBUP-244
DescriptionBackup Polyurethane BS244 - 4.250 X 4.500 X 0.040"
ProfileBUP
Internal Diameter4.250
Outer Diameter4.500
Seal Height0.040
Max. Temp C100
Alt. Part No.R19244
BUP-347
Backup Polyurethane BS347 - 4.250 X 4.625 X 0.055"
0
BUP-347 - Backup Polyurethane BS347 - 4.250 X 4.625 X 0.055"
Product Information
Product CodeBUP-347
DescriptionBackup Polyurethane BS347 - 4.250 X 4.625 X 0.055"
ProfileBUP
Internal Diameter4.250
Outer Diameter4.625
Seal Height0.055
Max. Temp C100
Alt. Part No.R19347
BUP-245
Backup Polyurethane BS245 - 4.375 X 4.625 X 0.040"
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BUP-245 - Backup Polyurethane BS245 - 4.375 X 4.625 X 0.040"
Product Information
Product CodeBUP-245
DescriptionBackup Polyurethane BS245 - 4.375 X 4.625 X 0.040"
ProfileBUP
Internal Diameter4.375
Outer Diameter4.625
Seal Height0.040
Max. Temp C100
Alt. Part No.R19245
BUP-348
Backup Polyurethane BS348 - 4.375 X 4.750 X 0.055"
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BUP-348 - Backup Polyurethane BS348 - 4.375 X 4.750 X 0.055"
Product Information
Product CodeBUP-348
DescriptionBackup Polyurethane BS348 - 4.375 X 4.750 X 0.055"
ProfileBUP
Internal Diameter4.375
Outer Diameter4.750
Seal Height0.055
Max. Temp C100
Alt. Part No.R19348
BUP-047
Backup Polyurethane BS047 - 4.500 X 4.625 X 0.040"
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BUP-047 - Backup Polyurethane BS047 - 4.500 X 4.625 X 0.040"
Product Information
Product CodeBUP-047
DescriptionBackup Polyurethane BS047 - 4.500 X 4.625 X 0.040"
ProfileBUP
Internal Diameter4.500
Outer Diameter4.625
Seal Height0.040
Max. Temp C100
Alt. Part No.R19047
BUP-157
Backup Polyurethane BS157 - 4.500 X 4.688 X 0.040"
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BUP-157 - Backup Polyurethane BS157 - 4.500 X 4.688 X 0.040"
Product Information
Product CodeBUP-157
DescriptionBackup Polyurethane BS157 - 4.500 X 4.688 X 0.040"
ProfileBUP
Internal Diameter4.500
Outer Diameter4.688
Seal Height0.040
Max. Temp C100
Alt. Part No.R19157
BUP-246
Backup Polyurethane BS246 - 4.500 X 4.750 X 0.040"
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BUP-246 - Backup Polyurethane BS246 - 4.500 X 4.750 X 0.040"
Product Information
Product CodeBUP-246
DescriptionBackup Polyurethane BS246 - 4.500 X 4.750 X 0.040"
ProfileBUP
Internal Diameter4.500
Outer Diameter4.750
Seal Height0.040
Max. Temp C100
Alt. Part No.R19246
BUP-349
Backup Polyurethane BS349 - 4.500 X 4.875 X 0.055"
117
BUP-349 - Backup Polyurethane BS349 - 4.500 X 4.875 X 0.055"
Product Information
Product CodeBUP-349
DescriptionBackup Polyurethane BS349 - 4.500 X 4.875 X 0.055"
ProfileBUP
Internal Diameter4.500
Outer Diameter4.875
Seal Height0.055
Max. Temp C100
Alt. Part No.R19349
BUP-425
Backup Polyurethane BS425 - 4.500 X 5.000 X 0.085"
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BUP-425 - Backup Polyurethane BS425 - 4.500 X 5.000 X 0.085"
Product Information
Product CodeBUP-425
DescriptionBackup Polyurethane BS425 - 4.500 X 5.000 X 0.085"
ProfileBUP
Internal Diameter4.500
Outer Diameter5.000
Seal Height0.085
Max. Temp C100
Alt. Part No.R19425
BUP-247
Backup Polyurethane BS247 - 4.625 X 4.875 X 0.040"
0
BUP-247 - Backup Polyurethane BS247 - 4.625 X 4.875 X 0.040"
Product Information
Product CodeBUP-247
DescriptionBackup Polyurethane BS247 - 4.625 X 4.875 X 0.040"
ProfileBUP
Internal Diameter4.625
Outer Diameter4.875
Seal Height0.040
Max. Temp C100
Alt. Part No.R19247
BUP-350
Backup Polyurethane BS350 - 4.625 X 5.000 X 0.055"
0
BUP-350 - Backup Polyurethane BS350 - 4.625 X 5.000 X 0.055"
Product Information
Product CodeBUP-350
DescriptionBackup Polyurethane BS350 - 4.625 X 5.000 X 0.055"
ProfileBUP
Internal Diameter4.625
Outer Diameter5.000
Seal Height0.055
Max. Temp C100
Alt. Part No.R19350
BUP-426
Backup Polyurethane BS426 - 4.625 X 5.125 X 0.085"
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BUP-426 - Backup Polyurethane BS426 - 4.625 X 5.125 X 0.085"
Product Information
Product CodeBUP-426
DescriptionBackup Polyurethane BS426 - 4.625 X 5.125 X 0.085"
ProfileBUP
Internal Diameter4.625
Outer Diameter5.125
Seal Height0.085
Max. Temp C100
Alt. Part No.R19426
BUP-048
Backup Polyurethane BS048 - 4.750 X 4.875 X 0.040"
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BUP-048 - Backup Polyurethane BS048 - 4.750 X 4.875 X 0.040"
Product Information
Product CodeBUP-048
DescriptionBackup Polyurethane BS048 - 4.750 X 4.875 X 0.040"
ProfileBUP
Internal Diameter4.750
Outer Diameter4.875
Seal Height0.040
Max. Temp C100
Alt. Part No.R19048
BUP-158
Backup Polyurethane BS158 - 4.750 X 4.938 X 0.040"
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BUP-158 - Backup Polyurethane BS158 - 4.750 X 4.938 X 0.040"
Product Information
Product CodeBUP-158
DescriptionBackup Polyurethane BS158 - 4.750 X 4.938 X 0.040"
ProfileBUP
Internal Diameter4.750
Outer Diameter4.938
Seal Height0.040
Max. Temp C100
Alt. Part No.R19158
 
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