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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-314
Backup Contoured NBR90 BS314 - 0.750 X 1.125 X 0.060"
355
BUN-314 - Backup Contoured NBR90 BS314 - 0.750 X 1.125 X 0.060"
Product Information
Product CodeBUN-314
DescriptionBackup Contoured NBR90 BS314 - 0.750 X 1.125 X 0.060"
ProfileBUN
Internal Diameter0.750
Outer Diameter1.125
Seal Height0.060
Max. Temp C110
Alt. Part No.R80314
BUN-019
Backup Contoured NBR90 BS019 - 0.812 X 0.937 X 0.045"
6,515
BUN-019 - Backup Contoured NBR90 BS019 - 0.812 X 0.937 X 0.045"
Product Information
Product CodeBUN-019
DescriptionBackup Contoured NBR90 BS019 - 0.812 X 0.937 X 0.045"
ProfileBUN
Internal Diameter0.812
Outer Diameter0.937
Seal Height0.045
Max. Temp C110
Alt. Part No.R80019
BUN-117
Backup Contoured NBR90 BS117 - 0.812 X 1.000 X 0.045" 67058992 75171833
2,696
BUN-117 - Backup Contoured NBR90 BS117 - 0.812 X 1.000 X 0.045" 67058992 75171833
Product Information
Product CodeBUN-117
DescriptionBackup Contoured NBR90 BS117 - 0.812 X 1.000 X 0.045" 67058992 75171833
ProfileBUN
Internal Diameter0.812
Outer Diameter1.000
Seal Height0.045
Max. Temp C110
Alt. Part No.R80117
BUN-211
Backup Contoured NBR90 BS211 - 0.812 X 1.062 X 0.040"
4,601
BUN-211 - Backup Contoured NBR90 BS211 - 0.812 X 1.062 X 0.040"
Product Information
Product CodeBUN-211
DescriptionBackup Contoured NBR90 BS211 - 0.812 X 1.062 X 0.040"
ProfileBUN
Internal Diameter0.812
Outer Diameter1.062
Seal Height0.040
Max. Temp C110
Alt. Part No.R80211
BUN-315
Backup Contoured NBR90 BS315 - 0.812 X 1.187 X 0.060"
9
BUN-315 - Backup Contoured NBR90 BS315 - 0.812 X 1.187 X 0.060"
Product Information
Product CodeBUN-315
DescriptionBackup Contoured NBR90 BS315 - 0.812 X 1.187 X 0.060"
ProfileBUN
Internal Diameter0.812
Outer Diameter1.187
Seal Height0.060
Max. Temp C110
Alt. Part No.R80315
BUN-020
Backup Contoured NBR90 BS020 - 0.875 X 1.000 X 0.045"
862
BUN-020 - Backup Contoured NBR90 BS020 - 0.875 X 1.000 X 0.045"
Product Information
Product CodeBUN-020
DescriptionBackup Contoured NBR90 BS020 - 0.875 X 1.000 X 0.045"
ProfileBUN
Internal Diameter0.875
Outer Diameter1.000
Seal Height0.045
Max. Temp C110
Alt. Part No.R80020
BUN-118
Backup Contoured NBR90 BS118 - 0.875 X 1.063 X 0.045"
3,015
BUN-118 - Backup Contoured NBR90 BS118 - 0.875 X 1.063 X 0.045"
Product Information
Product CodeBUN-118
DescriptionBackup Contoured NBR90 BS118 - 0.875 X 1.063 X 0.045"
ProfileBUN
Internal Diameter0.875
Outer Diameter1.063
Seal Height0.045
Max. Temp C110
Alt. Part No.R80118
BUN-212
Backup Contoured NBR90 BS212 - 0.875 X 1.125 X 0.040"
1,797
BUN-212 - Backup Contoured NBR90 BS212 - 0.875 X 1.125 X 0.040"
Product Information
Product CodeBUN-212
DescriptionBackup Contoured NBR90 BS212 - 0.875 X 1.125 X 0.040"
ProfileBUN
Internal Diameter0.875
Outer Diameter1.125
Seal Height0.040
Max. Temp C110
Alt. Part No.R80212
BUN-316
Backup Contoured NBR90 BS316 - 0.875 X 1.250 X 0.060"
1,328
BUN-316 - Backup Contoured NBR90 BS316 - 0.875 X 1.250 X 0.060"
Product Information
Product CodeBUN-316
DescriptionBackup Contoured NBR90 BS316 - 0.875 X 1.250 X 0.060"
ProfileBUN
Internal Diameter0.875
Outer Diameter1.250
Seal Height0.060
Max. Temp C110
Alt. Part No.R80316
BUN-021
Backup Contoured NBR90 BS021 - 0.937 X 1.062 X 0.045"
2,728
BUN-021 - Backup Contoured NBR90 BS021 - 0.937 X 1.062 X 0.045"
Product Information
Product CodeBUN-021
DescriptionBackup Contoured NBR90 BS021 - 0.937 X 1.062 X 0.045"
ProfileBUN
Internal Diameter0.937
Outer Diameter1.062
Seal Height0.045
Max. Temp C110
Alt. Part No.R80021
BUN-119
Backup Contoured NBR90 BS119 - 0.937 X 1.125 X 0.045"
6,155
BUN-119 - Backup Contoured NBR90 BS119 - 0.937 X 1.125 X 0.045"
Product Information
Product CodeBUN-119
DescriptionBackup Contoured NBR90 BS119 - 0.937 X 1.125 X 0.045"
ProfileBUN
Internal Diameter0.937
Outer Diameter1.125
Seal Height0.045
Max. Temp C110
Alt. Part No.R80119
BUN-213
Backup Contoured NBR90 BS213 - 0.937 X 1.187 X 0.040"
2,241
BUN-213 - Backup Contoured NBR90 BS213 - 0.937 X 1.187 X 0.040"
Product Information
Product CodeBUN-213
DescriptionBackup Contoured NBR90 BS213 - 0.937 X 1.187 X 0.040"
ProfileBUN
Internal Diameter0.937
Outer Diameter1.187
Seal Height0.040
Max. Temp C110
Alt. Part No.R80213
BUN-317
Backup Contoured NBR90 BS317 - 0.937 X 1.312 X 0.060"
122
BUN-317 - Backup Contoured NBR90 BS317 - 0.937 X 1.312 X 0.060"
Product Information
Product CodeBUN-317
DescriptionBackup Contoured NBR90 BS317 - 0.937 X 1.312 X 0.060"
ProfileBUN
Internal Diameter0.937
Outer Diameter1.312
Seal Height0.060
Max. Temp C110
Alt. Part No.R80317
BUN-022
Backup Contoured NBR90 BS022 - 1.000 X 1.125 X 0.045"
1,070
BUN-022 - Backup Contoured NBR90 BS022 - 1.000 X 1.125 X 0.045"
Product Information
Product CodeBUN-022
DescriptionBackup Contoured NBR90 BS022 - 1.000 X 1.125 X 0.045"
ProfileBUN
Internal Diameter1.000
Outer Diameter1.125
Seal Height0.045
Max. Temp C110
Alt. Part No.R80022
BUN-120
Backup Contoured NBR90 BS120 - 1.000 X 1.188 X 0.045"
1,408
BUN-120 - Backup Contoured NBR90 BS120 - 1.000 X 1.188 X 0.045"
Product Information
Product CodeBUN-120
DescriptionBackup Contoured NBR90 BS120 - 1.000 X 1.188 X 0.045"
ProfileBUN
Internal Diameter1.000
Outer Diameter1.188
Seal Height0.045
Max. Temp C110
Alt. Part No.R80120
BUN-214
Backup Contoured NBR90 BS214 - 1.000 X 1.250 X 0.040"
3,904
BUN-214 - Backup Contoured NBR90 BS214 - 1.000 X 1.250 X 0.040"
Product Information
Product CodeBUN-214
DescriptionBackup Contoured NBR90 BS214 - 1.000 X 1.250 X 0.040"
ProfileBUN
Internal Diameter1.000
Outer Diameter1.250
Seal Height0.040
Max. Temp C110
Alt. Part No.R80214
BUN-318
Backup Contoured NBR90 BS318 - 1.000 X 1.375 X 0.060"
4,856
BUN-318 - Backup Contoured NBR90 BS318 - 1.000 X 1.375 X 0.060"
Product Information
Product CodeBUN-318
DescriptionBackup Contoured NBR90 BS318 - 1.000 X 1.375 X 0.060"
ProfileBUN
Internal Diameter1.000
Outer Diameter1.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80318
BUN-319
Backup Contoured NBR90 BS319 - 1.062 X 1.437 X 0.060" R80319 67059148
877
BUN-319 - Backup Contoured NBR90 BS319 - 1.062 X 1.437 X 0.060" R80319 67059148
Product Information
Product CodeBUN-319
DescriptionBackup Contoured NBR90 BS319 - 1.062 X 1.437 X 0.060" R80319 67059148
ProfileBUN
Internal Diameter1.062
Outer Diameter1.437
Seal Height0.060
Max. Temp C110
Alt. Part No.R80319
BUN-023
Backup Contoured NBR90 BS023 - 1.063 X 1.188 X 0.045" 27.00 X 30.18 X 1.14MM 67058949 75171761
2,570
BUN-023 - Backup Contoured NBR90 BS023 - 1.063 X 1.188 X 0.045" 27.00 X 30.18 X 1.14MM 67058949 75171761
Product Information
Product CodeBUN-023
DescriptionBackup Contoured NBR90 BS023 - 1.063 X 1.188 X 0.045" 27.00 X 30.18 X 1.14MM 67058949 75171761
ProfileBUN
Internal Diameter1.063
Outer Diameter1.188
Seal Height0.045
Max. Temp C110
Alt. Part No.R80023
BUN-121
Backup Contoured NBR90 BS121 - 1.063 X 1.251 X 0.045"
0
BUN-121 - Backup Contoured NBR90 BS121 - 1.063 X 1.251 X 0.045"
Product Information
Product CodeBUN-121
DescriptionBackup Contoured NBR90 BS121 - 1.063 X 1.251 X 0.045"
ProfileBUN
Internal Diameter1.063
Outer Diameter1.251
Seal Height0.045
Max. Temp C110
Alt. Part No.R80121
BUN-215
Backup Contoured NBR90 BS215 - 1.063 X 1.313 X 0.040"
347
BUN-215 - Backup Contoured NBR90 BS215 - 1.063 X 1.313 X 0.040"
Product Information
Product CodeBUN-215
DescriptionBackup Contoured NBR90 BS215 - 1.063 X 1.313 X 0.040"
ProfileBUN
Internal Diameter1.063
Outer Diameter1.313
Seal Height0.040
Max. Temp C110
Alt. Part No.R80215
BUN-024
Backup Contoured NBR90 BS024 - 1.125 X 1.250 X 0.045"
393
BUN-024 - Backup Contoured NBR90 BS024 - 1.125 X 1.250 X 0.045"
Product Information
Product CodeBUN-024
DescriptionBackup Contoured NBR90 BS024 - 1.125 X 1.250 X 0.045"
ProfileBUN
Internal Diameter1.125
Outer Diameter1.250
Seal Height0.045
Max. Temp C110
Alt. Part No.R80024
BUN-122
Backup Contoured NBR90 BS122 - 1.125 X 1.313 X 0.045" 75171845 67058997 N8-90-122 OLD CODE 29.03 X 3
833
BUN-122 - Backup Contoured NBR90 BS122 - 1.125 X 1.313 X 0.045" 75171845 67058997 N8-90-122 OLD CODE 29.03 X 3
Product Information
Product CodeBUN-122
DescriptionBackup Contoured NBR90 BS122 - 1.125 X 1.313 X 0.045" 75171845 67058997 N8-90-122 OLD CODE 29.03 X 3
ProfileBUN
Internal Diameter1.125
Outer Diameter1.313
Seal Height0.045
Max. Temp C110
Alt. Part No.R80122
BUN-216
Backup Contoured NBR90 BS216 - 1.125 X 1.375 X 0.040"
2,081
BUN-216 - Backup Contoured NBR90 BS216 - 1.125 X 1.375 X 0.040"
Product Information
Product CodeBUN-216
DescriptionBackup Contoured NBR90 BS216 - 1.125 X 1.375 X 0.040"
ProfileBUN
Internal Diameter1.125
Outer Diameter1.375
Seal Height0.040
Max. Temp C110
Alt. Part No.R80216
 
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