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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-233
Backup Polyurethane BS233 - 2.875 X 3.125 X 0.040"
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BUP-233 - Backup Polyurethane BS233 - 2.875 X 3.125 X 0.040"
Product Information
Product CodeBUP-233
DescriptionBackup Polyurethane BS233 - 2.875 X 3.125 X 0.040"
ProfileBUP
Internal Diameter2.875
Outer Diameter3.125
Seal Height0.040
Max. Temp C100
Alt. Part No.R19233
BUP-336
Backup Polyurethane BS336 - 2.875 X 3.250 X 0.055"
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BUP-336 - Backup Polyurethane BS336 - 2.875 X 3.250 X 0.055"
Product Information
Product CodeBUP-336
DescriptionBackup Polyurethane BS336 - 2.875 X 3.250 X 0.055"
ProfileBUP
Internal Diameter2.875
Outer Diameter3.250
Seal Height0.055
Max. Temp C100
Alt. Part No.R19336
BUP-041
Backup Polyurethane BS041 - 3.000 X 3.125 X 0.040"
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BUP-041 - Backup Polyurethane BS041 - 3.000 X 3.125 X 0.040"
Product Information
Product CodeBUP-041
DescriptionBackup Polyurethane BS041 - 3.000 X 3.125 X 0.040"
ProfileBUP
Internal Diameter3.000
Outer Diameter3.125
Seal Height0.040
Max. Temp C100
Alt. Part No.R19041
BUP-151
Backup Polyurethane BS151 - 3.000 X 3.188 X 0.040"
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BUP-151 - Backup Polyurethane BS151 - 3.000 X 3.188 X 0.040"
Product Information
Product CodeBUP-151
DescriptionBackup Polyurethane BS151 - 3.000 X 3.188 X 0.040"
ProfileBUP
Internal Diameter3.000
Outer Diameter3.188
Seal Height0.040
Max. Temp C100
Alt. Part No.R19151
BUP-234
Backup Polyurethane BS234 - 3.000 X 3.250 X 0.040"
645
BUP-234 - Backup Polyurethane BS234 - 3.000 X 3.250 X 0.040"
Product Information
Product CodeBUP-234
DescriptionBackup Polyurethane BS234 - 3.000 X 3.250 X 0.040"
ProfileBUP
Internal Diameter3.000
Outer Diameter3.250
Seal Height0.040
Max. Temp C100
Alt. Part No.R19234
BUP-337
Backup Polyurethane BS337 - 3.000 X 3.375 X 0.055"
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BUP-337 - Backup Polyurethane BS337 - 3.000 X 3.375 X 0.055"
Product Information
Product CodeBUP-337
DescriptionBackup Polyurethane BS337 - 3.000 X 3.375 X 0.055"
ProfileBUP
Internal Diameter3.000
Outer Diameter3.375
Seal Height0.055
Max. Temp C100
Alt. Part No.R19337
BUP-235
Backup Polyurethane BS235 - 3.125 X 3.375 X 0.040"
0
BUP-235 - Backup Polyurethane BS235 - 3.125 X 3.375 X 0.040"
Product Information
Product CodeBUP-235
DescriptionBackup Polyurethane BS235 - 3.125 X 3.375 X 0.040"
ProfileBUP
Internal Diameter3.125
Outer Diameter3.375
Seal Height0.040
Max. Temp C100
Alt. Part No.R19235
BUP-338
Backup Polyurethane BS338 - 3.125 X 3.500 X 0.055"
172
BUP-338 - Backup Polyurethane BS338 - 3.125 X 3.500 X 0.055"
Product Information
Product CodeBUP-338
DescriptionBackup Polyurethane BS338 - 3.125 X 3.500 X 0.055"
ProfileBUP
Internal Diameter3.125
Outer Diameter3.500
Seal Height0.055
Max. Temp C100
Alt. Part No.R19338
BUP-042
Backup Polyurethane BS042 - 3.250 X 3.375 X 0.040"
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BUP-042 - Backup Polyurethane BS042 - 3.250 X 3.375 X 0.040"
Product Information
Product CodeBUP-042
DescriptionBackup Polyurethane BS042 - 3.250 X 3.375 X 0.040"
ProfileBUP
Internal Diameter3.250
Outer Diameter3.375
Seal Height0.040
Max. Temp C100
Alt. Part No.R19042
BUP-152
Backup Polyurethane BS152 - 3.250 X 3.438 X 0.040"
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BUP-152 - Backup Polyurethane BS152 - 3.250 X 3.438 X 0.040"
Product Information
Product CodeBUP-152
DescriptionBackup Polyurethane BS152 - 3.250 X 3.438 X 0.040"
ProfileBUP
Internal Diameter3.250
Outer Diameter3.438
Seal Height0.040
Max. Temp C100
Alt. Part No.R19152
BUP-236
Backup Polyurethane BS236 - 3.250 X 3.500 X 0.040"
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BUP-236 - Backup Polyurethane BS236 - 3.250 X 3.500 X 0.040"
Product Information
Product CodeBUP-236
DescriptionBackup Polyurethane BS236 - 3.250 X 3.500 X 0.040"
ProfileBUP
Internal Diameter3.250
Outer Diameter3.500
Seal Height0.040
Max. Temp C100
Alt. Part No.R19236
BUP-339
Backup Polyurethane BS339 - 3.250 X 3.625 X 0.055"
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BUP-339 - Backup Polyurethane BS339 - 3.250 X 3.625 X 0.055"
Product Information
Product CodeBUP-339
DescriptionBackup Polyurethane BS339 - 3.250 X 3.625 X 0.055"
ProfileBUP
Internal Diameter3.250
Outer Diameter3.625
Seal Height0.055
Max. Temp C100
Alt. Part No.R19339
BUP-237
Backup Polyurethane BS237 - 3.375 X 3.625 X 0.040"
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BUP-237 - Backup Polyurethane BS237 - 3.375 X 3.625 X 0.040"
Product Information
Product CodeBUP-237
DescriptionBackup Polyurethane BS237 - 3.375 X 3.625 X 0.040"
ProfileBUP
Internal Diameter3.375
Outer Diameter3.625
Seal Height0.040
Max. Temp C100
Alt. Part No.R19237
BUP-340
Backup Polyurethane BS340 - 3.375 X 3.750 X 0.055"
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BUP-340 - Backup Polyurethane BS340 - 3.375 X 3.750 X 0.055"
Product Information
Product CodeBUP-340
DescriptionBackup Polyurethane BS340 - 3.375 X 3.750 X 0.055"
ProfileBUP
Internal Diameter3.375
Outer Diameter3.750
Seal Height0.055
Max. Temp C100
Alt. Part No.R19340
BUP-043
Backup Polyurethane BS043 - 3.500 X 3.625 X 0.040"
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BUP-043 - Backup Polyurethane BS043 - 3.500 X 3.625 X 0.040"
Product Information
Product CodeBUP-043
DescriptionBackup Polyurethane BS043 - 3.500 X 3.625 X 0.040"
ProfileBUP
Internal Diameter3.500
Outer Diameter3.625
Seal Height0.040
Max. Temp C100
Alt. Part No.R19043
BUP-153
Backup Polyurethane BS153 - 3.500 X 3.688 X 0.040"
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BUP-153 - Backup Polyurethane BS153 - 3.500 X 3.688 X 0.040"
Product Information
Product CodeBUP-153
DescriptionBackup Polyurethane BS153 - 3.500 X 3.688 X 0.040"
ProfileBUP
Internal Diameter3.500
Outer Diameter3.688
Seal Height0.040
Max. Temp C100
Alt. Part No.R19153
BUP-238
Backup Polyurethane BS238 - 3.500 X 3.750 X 0.040"
619
BUP-238 - Backup Polyurethane BS238 - 3.500 X 3.750 X 0.040"
Product Information
Product CodeBUP-238
DescriptionBackup Polyurethane BS238 - 3.500 X 3.750 X 0.040"
ProfileBUP
Internal Diameter3.500
Outer Diameter3.750
Seal Height0.040
Max. Temp C100
Alt. Part No.R19238
BUP-341
Backup Polyurethane BS341 - 3.500 X 3.875 X 0.055"
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BUP-341 - Backup Polyurethane BS341 - 3.500 X 3.875 X 0.055"
Product Information
Product CodeBUP-341
DescriptionBackup Polyurethane BS341 - 3.500 X 3.875 X 0.055"
ProfileBUP
Internal Diameter3.500
Outer Diameter3.875
Seal Height0.055
Max. Temp C100
Alt. Part No.R19341
BUP-239
Backup Polyurethane BS239 - 3.625 X 3.875 X 0.040"
0
BUP-239 - Backup Polyurethane BS239 - 3.625 X 3.875 X 0.040"
Product Information
Product CodeBUP-239
DescriptionBackup Polyurethane BS239 - 3.625 X 3.875 X 0.040"
ProfileBUP
Internal Diameter3.625
Outer Diameter3.875
Seal Height0.040
Max. Temp C100
Alt. Part No.R19239
BUP-342
Backup Polyurethane BS342 - 3.625 X 4.000 X 0.055"
11
BUP-342 - Backup Polyurethane BS342 - 3.625 X 4.000 X 0.055"
Product Information
Product CodeBUP-342
DescriptionBackup Polyurethane BS342 - 3.625 X 4.000 X 0.055"
ProfileBUP
Internal Diameter3.625
Outer Diameter4.000
Seal Height0.055
Max. Temp C100
Alt. Part No.R19342
BUP-044
Backup Polyurethane BS044 - 3.750 X 3.875 X 0.040"
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BUP-044 - Backup Polyurethane BS044 - 3.750 X 3.875 X 0.040"
Product Information
Product CodeBUP-044
DescriptionBackup Polyurethane BS044 - 3.750 X 3.875 X 0.040"
ProfileBUP
Internal Diameter3.750
Outer Diameter3.875
Seal Height0.040
Max. Temp C100
Alt. Part No.R19044
BUP-154
Backup Polyurethane BS154 - 3.750 X 3.938 X 0.040"
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BUP-154 - Backup Polyurethane BS154 - 3.750 X 3.938 X 0.040"
Product Information
Product CodeBUP-154
DescriptionBackup Polyurethane BS154 - 3.750 X 3.938 X 0.040"
ProfileBUP
Internal Diameter3.750
Outer Diameter3.938
Seal Height0.040
Max. Temp C100
Alt. Part No.R19154
BUP-240
Backup Polyurethane BS240 - 3.750 X 4.000 X 0.040"
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BUP-240 - Backup Polyurethane BS240 - 3.750 X 4.000 X 0.040"
Product Information
Product CodeBUP-240
DescriptionBackup Polyurethane BS240 - 3.750 X 4.000 X 0.040"
ProfileBUP
Internal Diameter3.750
Outer Diameter4.000
Seal Height0.040
Max. Temp C100
Alt. Part No.R19240
BUP-343
Backup Polyurethane BS343 - 3.750 X 4.125 X 0.055"
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BUP-343 - Backup Polyurethane BS343 - 3.750 X 4.125 X 0.055"
Product Information
Product CodeBUP-343
DescriptionBackup Polyurethane BS343 - 3.750 X 4.125 X 0.055"
ProfileBUP
Internal Diameter3.750
Outer Diameter4.125
Seal Height0.055
Max. Temp C100
Alt. Part No.R19343
 
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