BUT Backup Rings | PTFE Sealing O-Rings | FST Australia
Not sure what seal you need? Try our Seal filter & Finder
BUT
Design
    • Provides exceptional extrusion resistance to a paired oring to increase pressure handling capabilities.
    • Ideal in applications where low friction is a priority.
    • Can be used as a backup to a hydraulic seal or an oring.
    • PTFE will 'cold-flow' into an extrusion gap to provide superior extrusion resistance to Nitrile.
Material
    • PTFE
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
 
16 17 18
Page of 22
Product Code
Description
Availability
Qty
BUTM-G040
Backup PTFE G040 - 40.00 X 45.00 X 1.20mm
41
BUTM-G040 - Backup PTFE G040 - 40.00 X 45.00 X 1.20mm
Product Information
Product CodeBUTM-G040
DescriptionBackup PTFE G040 - 40.00 X 45.00 X 1.20mm
ProfileBUT
Internal Diameter40.00
Outer Diameter45.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKG040
BUTM-P040
Backup PTFE P040 - 40.00 X 46.00 X 1.20mm
9
BUTM-P040 - Backup PTFE P040 - 40.00 X 46.00 X 1.20mm
Product Information
Product CodeBUTM-P040
DescriptionBackup PTFE P040 - 40.00 X 46.00 X 1.20mm
ProfileBUT
Internal Diameter40.00
Outer Diameter46.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP040
BUTM-P041
Backup PTFE P041 - 41.00 X 47.00 X 1.20mm
-
Enquire
BUTM-P041 - Backup PTFE P041 - 41.00 X 47.00 X 1.20mm
Product Information
Product CodeBUTM-P041
DescriptionBackup PTFE P041 - 41.00 X 47.00 X 1.20mm
ProfileBUT
Internal Diameter41.00
Outer Diameter47.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP041
BUTM-P042
Backup PTFE P042 - 42.00 X 48.00 X 1.20mm
0
BUTM-P042 - Backup PTFE P042 - 42.00 X 48.00 X 1.20mm
Product Information
Product CodeBUTM-P042
DescriptionBackup PTFE P042 - 42.00 X 48.00 X 1.20mm
ProfileBUT
Internal Diameter42.00
Outer Diameter48.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP042
BUTM-P044
Backup PTFE P044 - 44.00 X 50.00 X 1.20mm
0
BUTM-P044 - Backup PTFE P044 - 44.00 X 50.00 X 1.20mm
Product Information
Product CodeBUTM-P044
DescriptionBackup PTFE P044 - 44.00 X 50.00 X 1.20mm
ProfileBUT
Internal Diameter44.00
Outer Diameter50.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP044
BUTM-G045
Backup PTFE G045 - 45.00 X 50.00 X 1.20mm
220
BUTM-G045 - Backup PTFE G045 - 45.00 X 50.00 X 1.20mm
Product Information
Product CodeBUTM-G045
DescriptionBackup PTFE G045 - 45.00 X 50.00 X 1.20mm
ProfileBUT
Internal Diameter45.00
Outer Diameter50.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKG045
BUTM-P045
Backup PTFE P045 - 45.00 X 51.00 X 1.20mm
4
BUTM-P045 - Backup PTFE P045 - 45.00 X 51.00 X 1.20mm
Product Information
Product CodeBUTM-P045
DescriptionBackup PTFE P045 - 45.00 X 51.00 X 1.20mm
ProfileBUT
Internal Diameter45.00
Outer Diameter51.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP045
BUTM-P046
Backup PTFE P046 - 46.00 X 52.00 X 1.20mm
1
BUTM-P046 - Backup PTFE P046 - 46.00 X 52.00 X 1.20mm
Product Information
Product CodeBUTM-P046
DescriptionBackup PTFE P046 - 46.00 X 52.00 X 1.20mm
ProfileBUT
Internal Diameter46.00
Outer Diameter52.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP046
BUTM-P048
Backup PTFE P048 - 48.00 X 54.00 X 1.20mm
4
BUTM-P048 - Backup PTFE P048 - 48.00 X 54.00 X 1.20mm
Product Information
Product CodeBUTM-P048
DescriptionBackup PTFE P048 - 48.00 X 54.00 X 1.20mm
ProfileBUT
Internal Diameter48.00
Outer Diameter54.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP048
BUTM-P048A
Backup PTFE P048A - 48.00 X 58.00 X 1.90mm
-
Enquire
BUTM-P048A - Backup PTFE P048A - 48.00 X 58.00 X 1.90mm
Product Information
Product CodeBUTM-P048A
DescriptionBackup PTFE P048A - 48.00 X 58.00 X 1.90mm
ProfileBUT
Internal Diameter48.00
Outer Diameter58.00
Seal Height1.90
Max. Temp C260
BUTM-P049
Backup PTFE P049 - 49.00 X 55.00 X 1.20mm
-
Enquire
BUTM-P049 - Backup PTFE P049 - 49.00 X 55.00 X 1.20mm
Product Information
Product CodeBUTM-P049
DescriptionBackup PTFE P049 - 49.00 X 55.00 X 1.20mm
ProfileBUT
Internal Diameter49.00
Outer Diameter55.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP049
BUTM-G050
Backup PTFE G050 - 50.00 X 55.00 X 1.20mm
70
BUTM-G050 - Backup PTFE G050 - 50.00 X 55.00 X 1.20mm
Product Information
Product CodeBUTM-G050
DescriptionBackup PTFE G050 - 50.00 X 55.00 X 1.20mm
ProfileBUT
Internal Diameter50.00
Outer Diameter55.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKG050
BUTM-P050
Backup PTFE P050 - 50.00 X 56.00 X 1.20mm
48
BUTM-P050 - Backup PTFE P050 - 50.00 X 56.00 X 1.20mm
Product Information
Product CodeBUTM-P050
DescriptionBackup PTFE P050 - 50.00 X 56.00 X 1.20mm
ProfileBUT
Internal Diameter50.00
Outer Diameter56.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKP050
BUTM-P050A
Backup PTFE P050A - 50.00 X 60.00 X 1.80mm
19
BUTM-P050A - Backup PTFE P050A - 50.00 X 60.00 X 1.80mm
Product Information
Product CodeBUTM-P050A
DescriptionBackup PTFE P050A - 50.00 X 60.00 X 1.80mm
ProfileBUT
Internal Diameter50.00
Outer Diameter60.00
Seal Height1.80
Max. Temp C260
Alt. Part No.RKP050A
BUTM-G052
Backup PTFE G050 - 50.00 X 55.00 X 1.20mm
12
BUTM-G052 - Backup PTFE G050 - 50.00 X 55.00 X 1.20mm
Product Information
Product CodeBUTM-G052
DescriptionBackup PTFE G050 - 50.00 X 55.00 X 1.20mm
ProfileBUT
Internal Diameter52.00
Outer Diameter56.00
Seal Height1.60
Max. Temp C260
BUTM-P052
Backup PTFE P052 - 52.00 X 62.00 X 1.90mm
-
Enquire
BUTM-P052 - Backup PTFE P052 - 52.00 X 62.00 X 1.90mm
Product Information
Product CodeBUTM-P052
DescriptionBackup PTFE P052 - 52.00 X 62.00 X 1.90mm
ProfileBUT
Internal Diameter52.00
Outer Diameter62.00
Seal Height1.90
Max. Temp C260
BUTM-P053
Backup PTFE P053 - 53.00 X 63.00 X 1.80mm
0
BUTM-P053 - Backup PTFE P053 - 53.00 X 63.00 X 1.80mm
Product Information
Product CodeBUTM-P053
DescriptionBackup PTFE P053 - 53.00 X 63.00 X 1.80mm
ProfileBUT
Internal Diameter53.00
Outer Diameter63.00
Seal Height1.80
Max. Temp C260
Alt. Part No.RKP053
BUTM-G055
Backup PTFE G055 - 55.00 X 60.00 X 1.20mm
98
BUTM-G055 - Backup PTFE G055 - 55.00 X 60.00 X 1.20mm
Product Information
Product CodeBUTM-G055
DescriptionBackup PTFE G055 - 55.00 X 60.00 X 1.20mm
ProfileBUT
Internal Diameter55.00
Outer Diameter60.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKG055
BUTM-P055
Backup PTFE P055 - 55.00 X 65.00 X 1.80mm
55
BUTM-P055 - Backup PTFE P055 - 55.00 X 65.00 X 1.80mm
Product Information
Product CodeBUTM-P055
DescriptionBackup PTFE P055 - 55.00 X 65.00 X 1.80mm
ProfileBUT
Internal Diameter55.00
Outer Diameter65.00
Seal Height1.80
Max. Temp C260
Alt. Part No.RKP055
BUTM-P056
Backup PTFE P056 - 56.00 X 66.00 X 1.90mm
0
BUTM-P056 - Backup PTFE P056 - 56.00 X 66.00 X 1.90mm
Product Information
Product CodeBUTM-P056
DescriptionBackup PTFE P056 - 56.00 X 66.00 X 1.90mm
ProfileBUT
Internal Diameter56.00
Outer Diameter66.00
Seal Height1.90
Max. Temp C260
BUTM-P058
Backup PTFE P058 - 58.00 X 68.00 X 1.90mm
0
BUTM-P058 - Backup PTFE P058 - 58.00 X 68.00 X 1.90mm
Product Information
Product CodeBUTM-P058
DescriptionBackup PTFE P058 - 58.00 X 68.00 X 1.90mm
ProfileBUT
Internal Diameter58.00
Outer Diameter68.00
Seal Height1.90
Max. Temp C260
BUTM-G060
Backup PTFE G060 - 60.00 X 65.00 X 1.20mm
356
BUTM-G060 - Backup PTFE G060 - 60.00 X 65.00 X 1.20mm
Product Information
Product CodeBUTM-G060
DescriptionBackup PTFE G060 - 60.00 X 65.00 X 1.20mm
ProfileBUT
Internal Diameter60.00
Outer Diameter65.00
Seal Height1.20
Max. Temp C260
Alt. Part No.RKG060
BUTM-P060
Backup PTFE P060 - 60.00 X 70.00 X 1.80mm
39
BUTM-P060 - Backup PTFE P060 - 60.00 X 70.00 X 1.80mm
Product Information
Product CodeBUTM-P060
DescriptionBackup PTFE P060 - 60.00 X 70.00 X 1.80mm
ProfileBUT
Internal Diameter60.00
Outer Diameter70.00
Seal Height1.80
Max. Temp C260
Alt. Part No.RKP060
BUTM-P062
Backup PTFE P062 - 62.00 X 72.00 X 1.90mm
-
Enquire
BUTM-P062 - Backup PTFE P062 - 62.00 X 72.00 X 1.90mm
Product Information
Product CodeBUTM-P062
DescriptionBackup PTFE P062 - 62.00 X 72.00 X 1.90mm
ProfileBUT
Internal Diameter62.00
Outer Diameter72.00
Seal Height1.90
Max. Temp C260
 
16 17 18
Page of 22