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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-204
Backup Contoured NBR90 BS204 - 0.375 X 0.625 X 0.040" 9.53 x 15.88 x 1.02mm 67059057 75171941
4,546
BUN-204 - Backup Contoured NBR90 BS204 - 0.375 X 0.625 X 0.040" 9.53 x 15.88 x 1.02mm 67059057 75171941
Product Information
Product CodeBUN-204
DescriptionBackup Contoured NBR90 BS204 - 0.375 X 0.625 X 0.040" 9.53 x 15.88 x 1.02mm 67059057 75171941
ProfileBUN
Internal Diameter0.375
Outer Diameter0.625
Seal Height0.040
Max. Temp C110
Alt. Part No.R80204
BUN-013
Backup Contoured NBR90 BS013 - 0.437 X 0.562 X 0.045"
771
BUN-013 - Backup Contoured NBR90 BS013 - 0.437 X 0.562 X 0.045"
Product Information
Product CodeBUN-013
DescriptionBackup Contoured NBR90 BS013 - 0.437 X 0.562 X 0.045"
ProfileBUN
Internal Diameter0.437
Outer Diameter0.562
Seal Height0.045
Max. Temp C110
Alt. Part No.R80013
BUN-111
Backup Contoured NBR90 BS111 - 0.437 X 0.625 X 0.045"
1,684
BUN-111 - Backup Contoured NBR90 BS111 - 0.437 X 0.625 X 0.045"
Product Information
Product CodeBUN-111
DescriptionBackup Contoured NBR90 BS111 - 0.437 X 0.625 X 0.045"
ProfileBUN
Internal Diameter0.437
Outer Diameter0.625
Seal Height0.045
Max. Temp C110
Alt. Part No.R80111
BUN-205
Backup Contoured NBR90 BS205 - 0.437 X 0.687 X 0.040"
51
BUN-205 - Backup Contoured NBR90 BS205 - 0.437 X 0.687 X 0.040"
Product Information
Product CodeBUN-205
DescriptionBackup Contoured NBR90 BS205 - 0.437 X 0.687 X 0.040"
ProfileBUN
Internal Diameter0.437
Outer Diameter0.687
Seal Height0.040
Max. Temp C110
Alt. Part No.R80205
BUN-309
Backup Contoured NBR90 BS309 - 0.437 X 0.812 X 0.060"
0
BUN-309 - Backup Contoured NBR90 BS309 - 0.437 X 0.812 X 0.060"
Product Information
Product CodeBUN-309
DescriptionBackup Contoured NBR90 BS309 - 0.437 X 0.812 X 0.060"
ProfileBUN
Internal Diameter0.437
Outer Diameter0.812
Seal Height0.060
Max. Temp C110
Alt. Part No.R80309
BUN-014
Backup Contoured NBR90 BS014 - 0.500 X 0.625 X 0.045" 67058940 75171731 13.15 X 15.85 X 1.15 N8-90-0
1,419
BUN-014 - Backup Contoured NBR90 BS014 - 0.500 X 0.625 X 0.045" 67058940 75171731 13.15 X 15.85 X 1.15 N8-90-0
Product Information
Product CodeBUN-014
DescriptionBackup Contoured NBR90 BS014 - 0.500 X 0.625 X 0.045" 67058940 75171731 13.15 X 15.85 X 1.15 N8-90-0
ProfileBUN
Internal Diameter0.500
Outer Diameter0.625
Seal Height0.045
Max. Temp C110
Alt. Part No.R80014
BUN-112
Backup Contoured NBR90 BS112 - 0.500 X 0.688 X 0.045"
28,347
BUN-112 - Backup Contoured NBR90 BS112 - 0.500 X 0.688 X 0.045"
Product Information
Product CodeBUN-112
DescriptionBackup Contoured NBR90 BS112 - 0.500 X 0.688 X 0.045"
ProfileBUN
Internal Diameter0.500
Outer Diameter0.688
Seal Height0.045
Max. Temp C110
Alt. Part No.R80112
BUN-206
Backup Contoured NBR90 BS206 - 0.500 X 0.750 X 0.040"
1,007
BUN-206 - Backup Contoured NBR90 BS206 - 0.500 X 0.750 X 0.040"
Product Information
Product CodeBUN-206
DescriptionBackup Contoured NBR90 BS206 - 0.500 X 0.750 X 0.040"
ProfileBUN
Internal Diameter0.500
Outer Diameter0.750
Seal Height0.040
Max. Temp C110
Alt. Part No.R80206
BUN-310
Backup Contoured NBR90 BS310 - 0.500 X 0.875 X 0.060"
0
BUN-310 - Backup Contoured NBR90 BS310 - 0.500 X 0.875 X 0.060"
Product Information
Product CodeBUN-310
DescriptionBackup Contoured NBR90 BS310 - 0.500 X 0.875 X 0.060"
ProfileBUN
Internal Diameter0.500
Outer Diameter0.875
Seal Height0.060
Max. Temp C110
Alt. Part No.R80310
BUN-015
Backup Contoured NBR90 BS015 - 0.562 X 0.687 X 0.045" 67058941 75171735 14.73 X 17.42 X 1.10mm N8-90
2,326
BUN-015 - Backup Contoured NBR90 BS015 - 0.562 X 0.687 X 0.045" 67058941 75171735 14.73 X 17.42 X 1.10mm N8-90
Product Information
Product CodeBUN-015
DescriptionBackup Contoured NBR90 BS015 - 0.562 X 0.687 X 0.045" 67058941 75171735 14.73 X 17.42 X 1.10mm N8-90
ProfileBUN
Internal Diameter0.562
Outer Diameter0.687
Seal Height0.045
Max. Temp C110
Alt. Part No.R80015
BUN-113
Backup Contoured NBR90 BS113 - 0.562 X 0.750 X 0.045"
598
BUN-113 - Backup Contoured NBR90 BS113 - 0.562 X 0.750 X 0.045"
Product Information
Product CodeBUN-113
DescriptionBackup Contoured NBR90 BS113 - 0.562 X 0.750 X 0.045"
ProfileBUN
Internal Diameter0.562
Outer Diameter0.750
Seal Height0.045
Max. Temp C110
Alt. Part No.R80113
BUN-207
Backup Contoured NBR90 BS207 - 0.562 X 0.812 X 0.040"
0
BUN-207 - Backup Contoured NBR90 BS207 - 0.562 X 0.812 X 0.040"
Product Information
Product CodeBUN-207
DescriptionBackup Contoured NBR90 BS207 - 0.562 X 0.812 X 0.040"
ProfileBUN
Internal Diameter0.562
Outer Diameter0.812
Seal Height0.040
Max. Temp C110
Alt. Part No.R80207
BUN-311
Backup Contoured NBR90 BS311 - 0.562 X 0.937 X 0.060"
3,123
BUN-311 - Backup Contoured NBR90 BS311 - 0.562 X 0.937 X 0.060"
Product Information
Product CodeBUN-311
DescriptionBackup Contoured NBR90 BS311 - 0.562 X 0.937 X 0.060"
ProfileBUN
Internal Diameter0.562
Outer Diameter0.937
Seal Height0.060
Max. Temp C110
Alt. Part No.R80311
BUN-016
Backup Contoured NBR90 BS016 - 0.625 X 0.750 X 0.045"
0
BUN-016 - Backup Contoured NBR90 BS016 - 0.625 X 0.750 X 0.045"
Product Information
Product CodeBUN-016
DescriptionBackup Contoured NBR90 BS016 - 0.625 X 0.750 X 0.045"
ProfileBUN
Internal Diameter0.625
Outer Diameter0.750
Seal Height0.045
Max. Temp C110
Alt. Part No.R80016
BUN-114
Backup Contoured NBR90 BS114 - 0.625 X 0.813 X 0.045"
4,203
BUN-114 - Backup Contoured NBR90 BS114 - 0.625 X 0.813 X 0.045"
Product Information
Product CodeBUN-114
DescriptionBackup Contoured NBR90 BS114 - 0.625 X 0.813 X 0.045"
ProfileBUN
Internal Diameter0.625
Outer Diameter0.813
Seal Height0.045
Max. Temp C110
Alt. Part No.R80114
BUN-208
Backup Contoured NBR90 BS208 - 0.625 X 0.875 X 0.040"
206
BUN-208 - Backup Contoured NBR90 BS208 - 0.625 X 0.875 X 0.040"
Product Information
Product CodeBUN-208
DescriptionBackup Contoured NBR90 BS208 - 0.625 X 0.875 X 0.040"
ProfileBUN
Internal Diameter0.625
Outer Diameter0.875
Seal Height0.040
Max. Temp C110
Alt. Part No.R80208
BUN-312
Backup Contoured NBR90 BS312 - 0.625 X 1.000 X 0.060"
0
BUN-312 - Backup Contoured NBR90 BS312 - 0.625 X 1.000 X 0.060"
Product Information
Product CodeBUN-312
DescriptionBackup Contoured NBR90 BS312 - 0.625 X 1.000 X 0.060"
ProfileBUN
Internal Diameter0.625
Outer Diameter1.000
Seal Height0.060
Max. Temp C110
Alt. Part No.R80312
BUN-017
Backup Contoured NBR90 BS017 - 0.687 X 0.812 X 0.045"
7,624
BUN-017 - Backup Contoured NBR90 BS017 - 0.687 X 0.812 X 0.045"
Product Information
Product CodeBUN-017
DescriptionBackup Contoured NBR90 BS017 - 0.687 X 0.812 X 0.045"
ProfileBUN
Internal Diameter0.687
Outer Diameter0.812
Seal Height0.045
Max. Temp C110
Alt. Part No.R80017
BUN-115
Backup Contoured NBR90 BS115 - 0.687 X 0.875 X 0.045" 75171827 67058990 17.83 X 22.20 X 1.20mm N8-90
1,037
BUN-115 - Backup Contoured NBR90 BS115 - 0.687 X 0.875 X 0.045" 75171827 67058990 17.83 X 22.20 X 1.20mm N8-90
Product Information
Product CodeBUN-115
DescriptionBackup Contoured NBR90 BS115 - 0.687 X 0.875 X 0.045" 75171827 67058990 17.83 X 22.20 X 1.20mm N8-90
ProfileBUN
Internal Diameter0.687
Outer Diameter0.875
Seal Height0.045
Max. Temp C110
Alt. Part No.R80115
BUN-209
Backup Contoured NBR90 BS209 - 0.687 X 0.937 X 0.040"
660
BUN-209 - Backup Contoured NBR90 BS209 - 0.687 X 0.937 X 0.040"
Product Information
Product CodeBUN-209
DescriptionBackup Contoured NBR90 BS209 - 0.687 X 0.937 X 0.040"
ProfileBUN
Internal Diameter0.687
Outer Diameter0.937
Seal Height0.040
Max. Temp C110
Alt. Part No.R80209
BUN-313
Backup Contoured NBR90 BS313 - 0.687 X 1.062 X 0.060"
0
BUN-313 - Backup Contoured NBR90 BS313 - 0.687 X 1.062 X 0.060"
Product Information
Product CodeBUN-313
DescriptionBackup Contoured NBR90 BS313 - 0.687 X 1.062 X 0.060"
ProfileBUN
Internal Diameter0.687
Outer Diameter1.062
Seal Height0.060
Max. Temp C110
Alt. Part No.R80313
BUN-018
Backup Contoured NBR90 BS018 - 0.750 X 0.875 X 0.045"
1,549
BUN-018 - Backup Contoured NBR90 BS018 - 0.750 X 0.875 X 0.045"
Product Information
Product CodeBUN-018
DescriptionBackup Contoured NBR90 BS018 - 0.750 X 0.875 X 0.045"
ProfileBUN
Internal Diameter0.750
Outer Diameter0.875
Seal Height0.045
Max. Temp C110
Alt. Part No.R80018
BUN-116
Backup Contoured NBR90 BS116 - 0.750 X 0.938 X 0.045" 67058991 19.43 X 2.18 X 1.14mm 75171829
757
BUN-116 - Backup Contoured NBR90 BS116 - 0.750 X 0.938 X 0.045" 67058991 19.43 X 2.18 X 1.14mm 75171829
Product Information
Product CodeBUN-116
DescriptionBackup Contoured NBR90 BS116 - 0.750 X 0.938 X 0.045" 67058991 19.43 X 2.18 X 1.14mm 75171829
ProfileBUN
Internal Diameter0.750
Outer Diameter0.938
Seal Height0.045
Max. Temp C110
Alt. Part No.R80116
BUN-210
Backup Contoured NBR90 BS210 - 0.750 X 1.000 X 0.040"
2,008
BUN-210 - Backup Contoured NBR90 BS210 - 0.750 X 1.000 X 0.040"
Product Information
Product CodeBUN-210
DescriptionBackup Contoured NBR90 BS210 - 0.750 X 1.000 X 0.040"
ProfileBUN
Internal Diameter0.750
Outer Diameter1.000
Seal Height0.040
Max. Temp C110
Alt. Part No.R80210
 
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