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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-030
Backup Contoured NBR90 BS030 - 1.625 X 1.750 X 0.045"
3,351
BUN-030 - Backup Contoured NBR90 BS030 - 1.625 X 1.750 X 0.045"
Product Information
Product CodeBUN-030
DescriptionBackup Contoured NBR90 BS030 - 1.625 X 1.750 X 0.045"
ProfileBUN
Internal Diameter1.625
Outer Diameter1.750
Seal Height0.045
Max. Temp C110
Alt. Part No.R80030
BUN-130
Backup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
4,418
BUN-130 - Backup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
Product Information
Product CodeBUN-130
DescriptionBackup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
ProfileBUN
Internal Diameter1.625
Outer Diameter1.813
Seal Height0.045
Max. Temp C110
Alt. Part No.R80130
BUH-130
Backup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
0
BUH-130 - Backup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
Product Information
Product CodeBUH-130
DescriptionBackup Contoured NBR90 BS130 - 1.625 X 1.813 X 0.045"
Internal Diameter1.625
Outer Diameter1.813
Seal Height0.045
BUN-223
Backup Contoured NBR90 BS223 - 1.625 X 1.875 X 0.040"
761
BUN-223 - Backup Contoured NBR90 BS223 - 1.625 X 1.875 X 0.040"
Product Information
Product CodeBUN-223
DescriptionBackup Contoured NBR90 BS223 - 1.625 X 1.875 X 0.040"
ProfileBUN
Internal Diameter1.625
Outer Diameter1.875
Seal Height0.040
Max. Temp C110
Alt. Part No.R80223
BUN-326
Backup Contoured NBR90 BS326 - 1.625 X 2.000 X 0.060"
336
BUN-326 - Backup Contoured NBR90 BS326 - 1.625 X 2.000 X 0.060"
Product Information
Product CodeBUN-326
DescriptionBackup Contoured NBR90 BS326 - 1.625 X 2.000 X 0.060"
ProfileBUN
Internal Diameter1.625
Outer Diameter2.000
Seal Height0.060
Max. Temp C110
Alt. Part No.R80326
BUN-131
Backup Contoured NBR90 BS131 - 1.687 X 1.875 X 0.045" 43.33 X 2.18 X 1.14mm 75189614 67059006 N8-90
429
BUN-131 - Backup Contoured NBR90 BS131 - 1.687 X 1.875 X 0.045" 43.33 X 2.18 X 1.14mm 75189614 67059006 N8-90
Product Information
Product CodeBUN-131
DescriptionBackup Contoured NBR90 BS131 - 1.687 X 1.875 X 0.045" 43.33 X 2.18 X 1.14mm 75189614 67059006 N8-90
ProfileBUN
Internal Diameter1.687
Outer Diameter1.875
Seal Height0.045
Max. Temp C110
Alt. Part No.R80131
BUN-031
Backup Contoured NBR90 BS031 - 1.750 X 1.875 X 0.045"
158
BUN-031 - Backup Contoured NBR90 BS031 - 1.750 X 1.875 X 0.045"
Product Information
Product CodeBUN-031
DescriptionBackup Contoured NBR90 BS031 - 1.750 X 1.875 X 0.045"
ProfileBUN
Internal Diameter1.750
Outer Diameter1.875
Seal Height0.045
Max. Temp C110
Alt. Part No.R80031
BUN-132
Backup Contoured NBR90 BS132 - 1.750 X 1.938 X 0.045"
488
BUN-132 - Backup Contoured NBR90 BS132 - 1.750 X 1.938 X 0.045"
Product Information
Product CodeBUN-132
DescriptionBackup Contoured NBR90 BS132 - 1.750 X 1.938 X 0.045"
ProfileBUN
Internal Diameter1.750
Outer Diameter1.938
Seal Height0.045
Max. Temp C110
Alt. Part No.R80132
BUN-224
Backup Contoured NBR90 BS224 - 1.750 X 2.000 X 0.040" R80224 67059077 75171988 N8-90-224 OLD CODE 45
761
BUN-224 - Backup Contoured NBR90 BS224 - 1.750 X 2.000 X 0.040" R80224 67059077 75171988 N8-90-224 OLD CODE 45
Product Information
Product CodeBUN-224
DescriptionBackup Contoured NBR90 BS224 - 1.750 X 2.000 X 0.040" R80224 67059077 75171988 N8-90-224 OLD CODE 45
ProfileBUN
Internal Diameter1.750
Outer Diameter2.000
Seal Height0.040
Max. Temp C110
Alt. Part No.R80224
BUN-327
Backup Contoured NBR90 BS327 - 1.750 X 2.125 X 0.060" R80327 67059156
1,111
BUN-327 - Backup Contoured NBR90 BS327 - 1.750 X 2.125 X 0.060" R80327 67059156
Product Information
Product CodeBUN-327
DescriptionBackup Contoured NBR90 BS327 - 1.750 X 2.125 X 0.060" R80327 67059156
ProfileBUN
Internal Diameter1.750
Outer Diameter2.125
Seal Height0.060
Max. Temp C110
Alt. Part No.R80327
BUN-133
Backup Contoured NBR90 BS133 - 1.812 X 2.000 X 0.045"
3,900
BUN-133 - Backup Contoured NBR90 BS133 - 1.812 X 2.000 X 0.045"
Product Information
Product CodeBUN-133
DescriptionBackup Contoured NBR90 BS133 - 1.812 X 2.000 X 0.045"
ProfileBUN
Internal Diameter1.812
Outer Diameter2.000
Seal Height0.045
Max. Temp C110
Alt. Part No.R80133
BUN-032
Backup Contoured NBR90 BS032 - 1.875 X 2.000 X 0.045"
68
BUN-032 - Backup Contoured NBR90 BS032 - 1.875 X 2.000 X 0.045"
Product Information
Product CodeBUN-032
DescriptionBackup Contoured NBR90 BS032 - 1.875 X 2.000 X 0.045"
ProfileBUN
Internal Diameter1.875
Outer Diameter2.000
Seal Height0.045
Max. Temp C110
Alt. Part No.R80032
BUN-134
Backup Contoured NBR90 BS134 - 1.875 X 2.063 X 0.045"
622
BUN-134 - Backup Contoured NBR90 BS134 - 1.875 X 2.063 X 0.045"
Product Information
Product CodeBUN-134
DescriptionBackup Contoured NBR90 BS134 - 1.875 X 2.063 X 0.045"
ProfileBUN
Internal Diameter1.875
Outer Diameter2.063
Seal Height0.045
Max. Temp C110
Alt. Part No.R80134
BUN-225
Backup Contoured NBR90 BS225 - 1.875 X 2.125 X 0.040"
1,544
BUN-225 - Backup Contoured NBR90 BS225 - 1.875 X 2.125 X 0.040"
Product Information
Product CodeBUN-225
DescriptionBackup Contoured NBR90 BS225 - 1.875 X 2.125 X 0.040"
ProfileBUN
Internal Diameter1.875
Outer Diameter2.125
Seal Height0.040
Max. Temp C110
Alt. Part No.R80225
BUN-328
Backup Contoured NBR90 BS328 - 1.875 X 2.250 X 0.060" 67059157 75172137 47.96 X 4.65 X 1.52mm R80328
84
BUN-328 - Backup Contoured NBR90 BS328 - 1.875 X 2.250 X 0.060" 67059157 75172137 47.96 X 4.65 X 1.52mm R80328
Product Information
Product CodeBUN-328
DescriptionBackup Contoured NBR90 BS328 - 1.875 X 2.250 X 0.060" 67059157 75172137 47.96 X 4.65 X 1.52mm R80328
ProfileBUN
Internal Diameter1.875
Outer Diameter2.250
Seal Height0.060
Max. Temp C110
Alt. Part No.R80328
BUN-135
Backup Contoured NBR90 BS135 - 1.937 X 2.125 X 0.045"
43
BUN-135 - Backup Contoured NBR90 BS135 - 1.937 X 2.125 X 0.045"
Product Information
Product CodeBUN-135
DescriptionBackup Contoured NBR90 BS135 - 1.937 X 2.125 X 0.045"
ProfileBUN
Internal Diameter1.937
Outer Diameter2.125
Seal Height0.045
Max. Temp C110
Alt. Part No.R80135
BUN-033
Backup Contoured NBR90 BS033 - 2.000 X 2.125 X 0.045"
1,789
BUN-033 - Backup Contoured NBR90 BS033 - 2.000 X 2.125 X 0.045"
Product Information
Product CodeBUN-033
DescriptionBackup Contoured NBR90 BS033 - 2.000 X 2.125 X 0.045"
ProfileBUN
Internal Diameter2.000
Outer Diameter2.125
Seal Height0.045
Max. Temp C110
Alt. Part No.R80033
BUN-136
Backup Contoured NBR90 BS136 - 2.000 X 2.188 X 0.045" 67059011 75171885
314
BUN-136 - Backup Contoured NBR90 BS136 - 2.000 X 2.188 X 0.045" 67059011 75171885
Product Information
Product CodeBUN-136
DescriptionBackup Contoured NBR90 BS136 - 2.000 X 2.188 X 0.045" 67059011 75171885
ProfileBUN
Internal Diameter2.000
Outer Diameter2.188
Seal Height0.045
Max. Temp C110
Alt. Part No.R80136
BUN-226
Backup Contoured NBR90 BS226 - 2.000 X 2.250 X 0.040" 75171995 67059079 N8-90-226 OLD CODE
458
BUN-226 - Backup Contoured NBR90 BS226 - 2.000 X 2.250 X 0.040" 75171995 67059079 N8-90-226 OLD CODE
Product Information
Product CodeBUN-226
DescriptionBackup Contoured NBR90 BS226 - 2.000 X 2.250 X 0.040" 75171995 67059079 N8-90-226 OLD CODE
ProfileBUN
Internal Diameter2.000
Outer Diameter2.250
Seal Height0.040
Max. Temp C110
Alt. Part No.R80226
BUN-329
Backup Contoured NBR90 BS329 - 2.000 X 2.375 X 0.060" R80329 67059158
129
BUN-329 - Backup Contoured NBR90 BS329 - 2.000 X 2.375 X 0.060" R80329 67059158
Product Information
Product CodeBUN-329
DescriptionBackup Contoured NBR90 BS329 - 2.000 X 2.375 X 0.060" R80329 67059158
ProfileBUN
Internal Diameter2.000
Outer Diameter2.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80329
BUN-137
Backup Contoured NBR90 BS137 - 2.063 X 2.251 X 0.045"
4,539
BUN-137 - Backup Contoured NBR90 BS137 - 2.063 X 2.251 X 0.045"
Product Information
Product CodeBUN-137
DescriptionBackup Contoured NBR90 BS137 - 2.063 X 2.251 X 0.045"
ProfileBUN
Internal Diameter2.063
Outer Diameter2.251
Seal Height0.045
Max. Temp C110
Alt. Part No.R80137
BUN-034
Backup Contoured NBR90 BS034 - 2.125 X 2.250 X 0.045"
180
BUN-034 - Backup Contoured NBR90 BS034 - 2.125 X 2.250 X 0.045"
Product Information
Product CodeBUN-034
DescriptionBackup Contoured NBR90 BS034 - 2.125 X 2.250 X 0.045"
ProfileBUN
Internal Diameter2.125
Outer Diameter2.250
Seal Height0.045
Max. Temp C110
Alt. Part No.R80034
BUN-138
Backup Contoured NBR90 BS138 - 2.125 X 2.313 X 0.045"
129
BUN-138 - Backup Contoured NBR90 BS138 - 2.125 X 2.313 X 0.045"
Product Information
Product CodeBUN-138
DescriptionBackup Contoured NBR90 BS138 - 2.125 X 2.313 X 0.045"
ProfileBUN
Internal Diameter2.125
Outer Diameter2.313
Seal Height0.045
Max. Temp C110
Alt. Part No.R80138
BUN-227
Backup Contoured NBR90 BS227 - 2.125 X 2.375 X 0.040"
271
BUN-227 - Backup Contoured NBR90 BS227 - 2.125 X 2.375 X 0.040"
Product Information
Product CodeBUN-227
DescriptionBackup Contoured NBR90 BS227 - 2.125 X 2.375 X 0.040"
ProfileBUN
Internal Diameter2.125
Outer Diameter2.375
Seal Height0.040
Max. Temp C110
Alt. Part No.R80227
 
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