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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 | 2 3/16 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
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 | 5 3/4 in Nominal Inner Diameter | 1/4 in Cross Section | O-Ring
Features
- Pressure range varies according to diametral clearance
- Temperature range of -40 °F to -240 °F
See Caterpillar® heading in kit catalog for more Caterpillar® replacement parts.
92A Durometer | Urethane Material | 2 1/4 in Nominal Inner Diameter | Buffer Seal
HC-8750-8 has a 10 in OD and is made to fit a 8 in bore cylinder.
Head cap size is determined based on the bending stress.
A static seal or o-ring is used in between the head cap and barrel (except welded construction).
The main function of the head cap is to enclose the pressure chamber at one end. The cap is connected to the cylinder body by means of welding, threading, bolts, or tie rod.
Designed to fit a 4 in inch cylinder bore and 1.75 in inch rod.
The gland is not threaded. It is held in place by a cylinder head cap and corresponding seal kit.
HWT-8000X6000 has a wall thickness of 1 in. The ID is 6 in and the OD is 8 in. The material is 1026 Carbon Steel.
Heavy Wall Tubes are used for machining high strength and close tolerance parts like bushings, axles, hydraulics, and sleeves.
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 | $22.11 |
| 5-14 | $19.33 |
| 15-24 | $17.16 |
| 25-49 | $15.46 |
| 50+ | $14.07 |
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.
70A Durometer | Nitrile Material | 14 MM Nominal Inner Diameter | 2 MM Cross Section | O-Ring
Features
- Chemical resistance
- Temperature range of -40 °F to 220 °F
