Backup Rings
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Parback® backup ring with a curved cross-section.
Parbaks are contoured on one face to minimize distortion of the o-ring when under pressure. Parbaks should be installed with the contoured face against the o-ring, but reversal does no harm.
90A Durometer | Buna-N Rubber Material | 6 in Nominal Inner Diameter | 1/8 in Cross Section | Backup Ring
Features
- Excellent extrusion resistance
- Easily stretched for installation
- Lubrication is enhanced by rubber which absorbs system fluid and does not plate out on rubbing surfaces
Solid Teflon backup ring with a flat cross-section.
PTFE can withstand high temperatures and is compatible with nearly all fluids.
PTFE Material | 3 1/4 in Nominal Inner Diameter | 1/8 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
- Deals very well with surface wear
5 5/8 X 5 7/8 Back-up SOLID PTFE
Solid Teflon backup ring with a flat cross-section.
PTFE can withstand high temperatures and is compatible with nearly all fluids.
- High temperature range
- Deals very well with surface wear
Solid Teflon backup ring with a flat cross-section.
PTFE can withstand high temperatures and is compatible with nearly all fluids.
- High temperature range
- Deals very well with surface wear
8 1/2 X 8 3/4 Back-up SOLID PTFE
Solid Teflon backup ring with a flat cross-section.
PTFE can withstand high temperatures and is compatible with nearly all fluids.
PTFE Material | 3 1/8 in Nominal Inner Diameter | 3/16 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
- Deals very well with surface wear
6 3/4 X 7 1/4 Back-up SOLID PTFE
Solid Urethane backup ring with a flat cross-section.
95A Durometer | Urethane Material | 11 1/2 in Nominal Inner Diameter | 1/4 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
16 X 16 1/2 Back-up SOLID PTFE
