Backup Rings
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About Backup Rings
Backup rings prevent O-ring extrusion into the clearance gap under high pressure. Install them on the low-pressure side of the O-ring. Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
Oil-Resistant Buna-N Backup Rings
Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
0.053"" Wide
| For Dash No. | Thk. | ID | OD | Hardness | Temp. Range, °F | Color | Pkg. Qty. | Part # | Tiered Pricing (Per Pack) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-9 pkgs | 10-50 pkgs | 51-60 pkgs | 61+ pkgs | ||||||||||
008 | 0.049" | — | 0.308" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T114 | $0.04 | $0.09 | $0.08 | $0.05 | |
011 | 0.049" | — | 0.433" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T117 | $0.04 | $0.09 | $0.06 | $0.05 | |
014 | 0.049" | — | 0.624" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T12 | $0.05 | $0.07 | $0.06 | $0.05 | |
015 | 0.049" | — | 0.686" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T121 | $0.06 | $0.06 | $0.06 | $0.06 | |
PTFE | |||||||||||||
009 | 0.049" | — | 0.340" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T115 | $0.04 | $0.09 | $0.08 | $0.05 | |
0.055"" Wide
| For Dash No. | Thk. | ID | OD | Hardness | Temp. Range, °F | Color | Pkg. Qty. | Part # | Tiered Pricing (Per Pack) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-9 pkgs | 10-50 pkgs | 51-60 pkgs | 61+ pkgs | ||||||||||
007 | 0.049" | — | 0.277" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T113 | $0.04 | $0.09 | $0.08 | $0.05 | |
Oil-Resistant Buna-N Backup Rings (Wide)
Wider backup rings for larger O-ring grooves. Made of Buna-N for excellent oil resistance.
0.070"" Wide
| For Dash No. | Thk. | ID | OD | Hardness | Temp. Range, °F | Color | Pkg. Qty. | Part # | Pkg. | |
|---|---|---|---|---|---|---|---|---|---|---|
104 | 0.064" | — | 0.236" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T201 | $0.05 | |
105 | 0.064" | — | 0.267" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T202 | $0.05 | |
106 | 0.064" | — | 0.280" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T203 | $0.05 | |
107 | 0.064" | — | 0.311" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T204 | $0.05 | |
108 | 0.064" | — | 0.342" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T205 | $0.05 | |
109 | 0.064" | — | 0.374" | Durometer 90A (Hard) | -40 to 250°F | Black | 100 | 5288T206 | $0.05 |