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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 | 1 13/16 in Nominal Inner Diameter | 3/32 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
ALUM-8000 has a 8 in diameter. The material is 6061 Aluminum T6
6061 Aluminum T6 is suitable for machining pistons and head glands.
The T6 refers to the temper or degree of hardness. T6 has been solution heat treated and artificially aged to provide the maximum yield strength for a 6061 aluminum alloy.
- Heat treated and aged for increased strength
- Easily formed
- Weldable
- Corrosion resistant
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 | $30.98 |
| 15-29 | $27.91 |
| 30+ | $25.40 |
O-rings as elastic loops that seal static and dynamic applications. They are used to seal the space between cylinders, pistons, pipes and tubes and can be made from various materials.
70 Durometer | Buna-N Rubber Material | 1 3/16 in Nominal Inner Diameter | 1/16 in Cross Section | O-Ring
Features
- Pressure range varies according to diametral clearance
- Temperature range of -40 °F to -240 °F
O-rings as elastic loops that seal static and dynamic applications. They are used to seal the space between cylinders, pistons, pipes and tubes and can be made from various materials.
90 Durometer | Buna-N Rubber Material | 2 5/16 in Nominal Inner Diameter | 3/32 in Cross Section | O-Ring
Features
- Pressure range varies according to diametral clearance
- Temperature range of -40 °F to -240 °F
MHT-70X80 has a wall thickness of 5 mm. The ID is 70 mm and the OD is 80 mm. The material is 1026 Carbon Steel and has been stress-relieved and annealed.
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 | $3.86 |
| 15-74 | $3.00 |
| 75-104 | $2.70 |
| 105+ | $2.46 |
MHT-80X102 has a wall thickness of 11 mm. The ID is 80 mm and the OD is 102 mm. The material is 1026 Carbon Steel and has been stress-relieved and annealed.
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 | $11.06 |
| 15-74 | $8.58 |
| 75-104 | $7.73 |
| 105+ | $7.04 |
Style 850 u-seals offer excellent resistance to extrusion and abrasion. The round cross-section expander offers energized sealing from zero to 5,000 psi.
95A Durometer | Urethane Material | 3 1/2 in Nominal Inner Diameter | 7/32 in Cross Section | U-Seal
End clearance on piston rings depends on ring design, material andapplication. The following end clearances are provided as a standard for hydraulic cylinder applications. When using iron piston rings, it is crucial to use the correct groove design for proper performance of the cylinder. Please use the following guidelines when cutting an iron piston ring groove.
GROOVE WIDTH: To permit the ring to slide freely into the groove, the groove must be at least 0.001” wider than the maximum piston ring width with a tolerance of +0.003”/-0.000”.
GROOVE DEPTH: Grooves must be at least 0.015” deeper than the maximum radial wall thickness of the piston ring with a tolerance of +0.003”/-0.000”. This is to avoid any possibility of the ring bottoming in the groove when the ring is compressed to its working diameter.
RADIAL CLEARANCE: The radial clearance between the cylinder bore and piston should be less than 1/3 of the radial wall thickness of the piston ring to ensure sealing effectiveness.
Iron Material | 0.142 in Cross Section | Piston Seal
