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BUN
Design
    • Contoured back-up rings provide a comfortable fit when paired with an oring.
    • Provides good extrusion resistance to a paired oring to increase pressure handling capabilities.
Material
    • 70A Nitrile - Precision Moulded
    • Most economical solution to enhance oring capability.
Application
    • Suitable for static and dynamic applications.
Fluids
    • Hydraulic fluids, petroleum fuels and oils

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Product Code
Description
Availability
Qty
BUN-362
Backup Contoured NBR90 BS362 - 6.250 X 6.625 X 0.060" 75172216 67059191 N8-90-362 OLD CODE 159.46 X
155
BUN-362 - Backup Contoured NBR90 BS362 - 6.250 X 6.625 X 0.060" 75172216 67059191 N8-90-362 OLD CODE 159.46 X
Product Information
Product CodeBUN-362
DescriptionBackup Contoured NBR90 BS362 - 6.250 X 6.625 X 0.060" 75172216 67059191 N8-90-362 OLD CODE 159.46 X
ProfileBUN
Internal Diameter6.250
Outer Diameter6.625
Seal Height0.060
Max. Temp C110
Alt. Part No.R80362
BUN-438
Backup Contoured NBR90 BS438 - 6.250 X 6.750 X 0.096" - - 67059238 - 159.36 x 171.34 x 2.44mm R80438
64
BUN-438 - Backup Contoured NBR90 BS438 - 6.250 X 6.750 X 0.096" - - 67059238 - 159.36 x 171.34 x 2.44mm R80438
Product Information
Product CodeBUN-438
DescriptionBackup Contoured NBR90 BS438 - 6.250 X 6.750 X 0.096" - - 67059238 - 159.36 x 171.34 x 2.44mm R80438
ProfileBUN
Internal Diameter6.250
Outer Diameter6.750
Seal Height0.096
Max. Temp C110
Alt. Part No.R80438
BUN-165
Backup Contoured NBR90 BS165 - 6.500 X 6.688 X 0.045"
0
BUN-165 - Backup Contoured NBR90 BS165 - 6.500 X 6.688 X 0.045"
Product Information
Product CodeBUN-165
DescriptionBackup Contoured NBR90 BS165 - 6.500 X 6.688 X 0.045"
ProfileBUN
Internal Diameter6.500
Outer Diameter6.688
Seal Height0.045
Max. Temp C110
Alt. Part No.R80165
BUN-260
Backup Contoured NBR90 BS260 - 6.500 X 6.750 X 0.040"
0
BUN-260 - Backup Contoured NBR90 BS260 - 6.500 X 6.750 X 0.040"
Product Information
Product CodeBUN-260
DescriptionBackup Contoured NBR90 BS260 - 6.500 X 6.750 X 0.040"
ProfileBUN
Internal Diameter6.500
Outer Diameter6.750
Seal Height0.040
Max. Temp C110
Alt. Part No.R80260
BUN-363
Backup Contoured NBR90 BS363 - 6.500 X 6.875 X 0.060"
0
BUN-363 - Backup Contoured NBR90 BS363 - 6.500 X 6.875 X 0.060"
Product Information
Product CodeBUN-363
DescriptionBackup Contoured NBR90 BS363 - 6.500 X 6.875 X 0.060"
ProfileBUN
Internal Diameter6.500
Outer Diameter6.875
Seal Height0.060
Max. Temp C110
Alt. Part No.R80363
BUN-439
Backup Contoured NBR90 BS439 - 6.500 X 7.000 X 0.096" 49457177 165.71 X 5.99 X 2.44mm 75172288 67059
45
BUN-439 - Backup Contoured NBR90 BS439 - 6.500 X 7.000 X 0.096" 49457177 165.71 X 5.99 X 2.44mm 75172288 67059
Product Information
Product CodeBUN-439
DescriptionBackup Contoured NBR90 BS439 - 6.500 X 7.000 X 0.096" 49457177 165.71 X 5.99 X 2.44mm 75172288 67059
ProfileBUN
Internal Diameter6.500
Outer Diameter7.000
Seal Height0.096
Max. Temp C110
Alt. Part No.R80439
BUN-166
Backup Contoured NBR90 BS166 - 6.750 X 6.938 X 0.045"
0
BUN-166 - Backup Contoured NBR90 BS166 - 6.750 X 6.938 X 0.045"
Product Information
Product CodeBUN-166
DescriptionBackup Contoured NBR90 BS166 - 6.750 X 6.938 X 0.045"
ProfileBUN
Internal Diameter6.750
Outer Diameter6.938
Seal Height0.045
Max. Temp C110
Alt. Part No.R80166
BUN-261
Backup Contoured NBR90 BS261 - 6.750 X 7.000 X 0.040"
0
BUN-261 - Backup Contoured NBR90 BS261 - 6.750 X 7.000 X 0.040"
Product Information
Product CodeBUN-261
DescriptionBackup Contoured NBR90 BS261 - 6.750 X 7.000 X 0.040"
ProfileBUN
Internal Diameter6.750
Outer Diameter7.000
Seal Height0.040
Max. Temp C110
Alt. Part No.R80261
BUN-364
Backup Contoured NBR90 BS364 - 6.750 X 7.125 X 0.060"
0
BUN-364 - Backup Contoured NBR90 BS364 - 6.750 X 7.125 X 0.060"
Product Information
Product CodeBUN-364
DescriptionBackup Contoured NBR90 BS364 - 6.750 X 7.125 X 0.060"
ProfileBUN
Internal Diameter6.750
Outer Diameter7.125
Seal Height0.060
Max. Temp C110
Alt. Part No.R80364
BUN-440
Backup Contoured NBR90 BS440 - 6.750 X 7.250 X 0.096"
0
BUN-440 - Backup Contoured NBR90 BS440 - 6.750 X 7.250 X 0.096"
Product Information
Product CodeBUN-440
DescriptionBackup Contoured NBR90 BS440 - 6.750 X 7.250 X 0.096"
ProfileBUN
Internal Diameter6.750
Outer Diameter7.250
Seal Height0.096
Max. Temp C110
Alt. Part No.R80440
BUN-167
Backup Contoured NBR90 BS167 - 7.000 X 7.188 X 0.045"
0
BUN-167 - Backup Contoured NBR90 BS167 - 7.000 X 7.188 X 0.045"
Product Information
Product CodeBUN-167
DescriptionBackup Contoured NBR90 BS167 - 7.000 X 7.188 X 0.045"
ProfileBUN
Internal Diameter7.000
Outer Diameter7.188
Seal Height0.045
Max. Temp C110
Alt. Part No.R80167
BUN-262
Backup Contoured NBR90 BS262 - 7.000 X 7.250 X 0.040"
23
BUN-262 - Backup Contoured NBR90 BS262 - 7.000 X 7.250 X 0.040"
Product Information
Product CodeBUN-262
DescriptionBackup Contoured NBR90 BS262 - 7.000 X 7.250 X 0.040"
ProfileBUN
Internal Diameter7.000
Outer Diameter7.250
Seal Height0.040
Max. Temp C110
Alt. Part No.R80262
BUN-365
Backup Contoured NBR90 BS365 - 7.000 X 7.375 X 0.060"
0
BUN-365 - Backup Contoured NBR90 BS365 - 7.000 X 7.375 X 0.060"
Product Information
Product CodeBUN-365
DescriptionBackup Contoured NBR90 BS365 - 7.000 X 7.375 X 0.060"
ProfileBUN
Internal Diameter7.000
Outer Diameter7.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80365
BUN-441
Backup Contoured NBR90 BS441 - 7.000 X 7.500 X 0.096"
24
BUN-441 - Backup Contoured NBR90 BS441 - 7.000 X 7.500 X 0.096"
Product Information
Product CodeBUN-441
DescriptionBackup Contoured NBR90 BS441 - 7.000 X 7.500 X 0.096"
ProfileBUN
Internal Diameter7.000
Outer Diameter7.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80441
BUN-168
Backup Contoured NBR90 BS168 - 7.250 X 7.438 X 0.045"
0
BUN-168 - Backup Contoured NBR90 BS168 - 7.250 X 7.438 X 0.045"
Product Information
Product CodeBUN-168
DescriptionBackup Contoured NBR90 BS168 - 7.250 X 7.438 X 0.045"
ProfileBUN
Internal Diameter7.250
Outer Diameter7.438
Seal Height0.045
Max. Temp C110
Alt. Part No.R80168
BUN-263
Backup Contoured NBR90 BS263 - 7.250 X 7.500 X 0.040"
0
BUN-263 - Backup Contoured NBR90 BS263 - 7.250 X 7.500 X 0.040"
Product Information
Product CodeBUN-263
DescriptionBackup Contoured NBR90 BS263 - 7.250 X 7.500 X 0.040"
ProfileBUN
Internal Diameter7.250
Outer Diameter7.500
Seal Height0.040
Max. Temp C110
Alt. Part No.R80263
BUN-366
Backup Contoured NBR90 BS366 - 7.250 X 7.625 X 0.060"
37
BUN-366 - Backup Contoured NBR90 BS366 - 7.250 X 7.625 X 0.060"
Product Information
Product CodeBUN-366
DescriptionBackup Contoured NBR90 BS366 - 7.250 X 7.625 X 0.060"
ProfileBUN
Internal Diameter7.250
Outer Diameter7.625
Seal Height0.060
Max. Temp C110
Alt. Part No.R80366
BUN-442
Backup Contoured NBR90 BS442 - 7.250 X 7.750 X 0.096"
0
BUN-442 - Backup Contoured NBR90 BS442 - 7.250 X 7.750 X 0.096"
Product Information
Product CodeBUN-442
DescriptionBackup Contoured NBR90 BS442 - 7.250 X 7.750 X 0.096"
ProfileBUN
Internal Diameter7.250
Outer Diameter7.750
Seal Height0.096
Max. Temp C110
Alt. Part No.R80442
BUN-169
Backup Contoured NBR90 BS169 - 7.500 X 7.688 X 0.045"
0
BUN-169 - Backup Contoured NBR90 BS169 - 7.500 X 7.688 X 0.045"
Product Information
Product CodeBUN-169
DescriptionBackup Contoured NBR90 BS169 - 7.500 X 7.688 X 0.045"
ProfileBUN
Internal Diameter7.500
Outer Diameter7.688
Seal Height0.045
Max. Temp C110
Alt. Part No.R80169
BUN-264
Backup Contoured NBR90 BS264 - 7.500 X 7.750 X 0.040"
0
BUN-264 - Backup Contoured NBR90 BS264 - 7.500 X 7.750 X 0.040"
Product Information
Product CodeBUN-264
DescriptionBackup Contoured NBR90 BS264 - 7.500 X 7.750 X 0.040"
ProfileBUN
Internal Diameter7.500
Outer Diameter7.750
Seal Height0.040
Max. Temp C110
Alt. Part No.R80264
BUN-367
Backup Contoured NBR90 BS367 - 7.500 X 7.875 X 0.060"
0
BUN-367 - Backup Contoured NBR90 BS367 - 7.500 X 7.875 X 0.060"
Product Information
Product CodeBUN-367
DescriptionBackup Contoured NBR90 BS367 - 7.500 X 7.875 X 0.060"
ProfileBUN
Internal Diameter7.500
Outer Diameter7.875
Seal Height0.060
Max. Temp C110
Alt. Part No.R80367
BUN-443
Backup Contoured NBR90 BS443 - 7.500 X 8.000 X 0.096"
0
BUN-443 - Backup Contoured NBR90 BS443 - 7.500 X 8.000 X 0.096"
Product Information
Product CodeBUN-443
DescriptionBackup Contoured NBR90 BS443 - 7.500 X 8.000 X 0.096"
ProfileBUN
Internal Diameter7.500
Outer Diameter8.000
Seal Height0.096
Max. Temp C110
Alt. Part No.R80443
BUN-170
Backup Contoured NBR90 BS170 - 7.750 X 7.938 X 0.045"
0
BUN-170 - Backup Contoured NBR90 BS170 - 7.750 X 7.938 X 0.045"
Product Information
Product CodeBUN-170
DescriptionBackup Contoured NBR90 BS170 - 7.750 X 7.938 X 0.045"
ProfileBUN
Internal Diameter7.750
Outer Diameter7.938
Seal Height0.045
Max. Temp C110
Alt. Part No.R80170
BUN-265
Backup Contoured NBR90 BS265 - 7.750 X 8.000 X 0.040"
0
BUN-265 - Backup Contoured NBR90 BS265 - 7.750 X 8.000 X 0.040"
Product Information
Product CodeBUN-265
DescriptionBackup Contoured NBR90 BS265 - 7.750 X 8.000 X 0.040"
ProfileBUN
Internal Diameter7.750
Outer Diameter8.000
Seal Height0.040
Max. Temp C110
Alt. Part No.R80265
 
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