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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 | 7 1/2 in Nominal Inner Diameter | 3/16 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
Wear rings provide a hard-wearing surface that protects the cylinder walls and the piston rod from scoring and abrasion. By maintaining alignment and reducing side loads, these rings facilitate smoother piston movement and lower friction levels.
Nylon Material | 5 3/4 in Nominal Inner Diameter | 1/8 in Cross Section | Wear Ring
Features
- Protection Against Wear
- Reduced Friction
- Extended Cylinder Life
- Operational Efficiency
Solid Urethane backup ring with a flat cross-section.
95A Durometer | Urethane Material | 3/4 in Nominal Inner Diameter | 1/16 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
Solid Urethane backup ring with a flat cross-section.
95A Durometer | Urethane Material | 2 1/8 in Nominal Inner Diameter | 3/32 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
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
660-2000X4000 has a 1 in thick wall. The ID is 2 in and the OD is 4 in. The material is 660 Bronze Copper Alloy 932.
660 Bronze is used for machining bearings, bushings, wear strips, and plates. This grade of bronze is used in pump, cylinder, and machine tool applications.
- Long life span
- Machinability rating of 70
- Not subject to dezincification
Full mill lengths will be cut to lengths between 12 ft and 19 ft long. Packages longer than 44 inches may have additional freight charges.
| 1-4 | $59.34 |
| 5-9 | $52.69 |
| 10-14 | $47.47 |
| 15+ | $43.20 |
CPOD1375X0500 has a wall thickness of 0.875 in. The ID is 0.5 in and the OD is 1.375 in. The material is 1026 Carbon Steel with chrome plating on the Outside Surface.
Full mill lengths will be cut to lengths between 12 ft and 19 ft long. Packages longer than 44 inches may have additional freight charges.
| 1-14 | $7.36 |
| 15-29 | $6.13 |
| 30-59 | $4.60 |
| 60-104 | $4.08 |
| 105+ | $3.68 |
Solid Teflon backup ring with a flat cross-section.
PTFE can withstand high temperatures and is compatible with nearly all fluids.
PTFE 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
- Deals very well with surface wear
Style 590 Back-up Rings feature exceptional strength and abrasion resistance along with a 53 Shore D hardness rating which makes them suitable for high pressure service where extrusion is a problem. Primarily used as a u-seal back-up, these rings can be used with o-rings. They also retrofit urethane and PTFE back-up rings, with greater performance characteristics. “S” suffix designates a split ring.
53 Shore D Durometer | Hytrel Material | 5 7/16 in Nominal Inner Diameter | 9/32 in Cross Section | Backup Ring
Features
- High strength and abrasion resistance
- Wide temperature range
- Chemical resistance
- Low friction
- Easy installation
