| SEAL INFORMATION | |
|---|---|
| MATERIAL | 95A URETHANE 70A NITRILE RUBBER |
| TEMPERATURE RANGE | -40° to +200° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Prefix)(CS) - (Inside Dia) - (Height) |
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Suffix: ZF = Fluorotrel (-40° to +235° F) ZL = Low Temperature Nitrile Sealing Lip (-65° to +200° F) ZLF = (-65° to +200° F) |
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The Z-Seal is a squeeze type seal, combining the excellent sealability and low compression set of a resilient rubber lip with the greater anti-extrusion characteristics of a hard thermoplastic base. Under low pressure conditions, the sealing lip provides its own compressive seal force. As pressure increases, hydrostatic pressure is mechanically transmitted through the elastomeric seal element into the anti-extrusion base. The applied force then deflects radially in a controlled manner, closing the extrusion gap behind the sealing lip. Under this condition, maximum sealing effectiveness is achieved. -
This seal is single cased with a urethane lip and used to exclude contaminants from cylinder link pins.
SEAL INFORMATION MATERIAL URETHANE SEAL
STEEL CASETEMPERATURE RANGE -30° to +200° F PART NUMBER (Prefix) - (ID) x (OD) x (H) -
These vee sets utilize hytrel & nylon vees to cover pressure from 0 to 6,000 psi and provide excellent extrusion resistance. Male & female bearings are molded from glass filled nylon. NOTE: These vee sets do not contain guidelock bearings. They are sold seperately (designated by the 'HDLG-' product code prefix). FB = FEMALE BEARING, 1740 = 3 VEES, 1741 = 4 VEES, 1742 = 5 VEESSEAL INFORMATION MATERIAL HYTREL & NYLON TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 6,000 PSI SPEED 1.5 FT/SEC PART NUMBER (Prefix) - (# of vees) - (OD) - (Bearing Height) -
Fabricated from fine woven fabric and phenolic resins, this wear ring is strong yet light weight with an excellent wear rate.
SEAL INFORMATION MATERIAL PHENOLIC TEMPERATURE RANGE -40° to +250° F SPEED 3 FT/SEC COMPRESSIVE STRENGTH 16,000 PSI TENSILE STRENGTH 10,600 PSI PART NUMBER (Prefix) - (OD) x (W) x (CS) -
Molded from high quality urethane and designed specifically for piston applications. A = Alternative to NOK
SEAL INFORMATION MATERIAL URETHANE TEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix)-(ID) x (OD) x (H) -
Molded in urethane, this wiper features a lip on the outer diameter to aid in contaminant exclusion.
SEAL INFORMATION MATERIAL URETHANE TEMPERATURE RANGE -30° to +200° F SPEED 3 FT/SEC PART NUMBER (Prefix) - (ID) x (OD) X (H) -
INSTALLATION OF PTFE PISTON SEALS
Installing PTFE piston seals is not always an easy task. The use of installation tools is recommended but often not convenient when working with a wide variety of sizes and applications. Finger installations are practical with rings of smaller cross-sections. Using fingers or a rounded plastic stick, knead the ring over the piston into the groove. With rings of larger cross-sections it may be necessary to heat the ring. Warming the ring in water or oil at 130° F or 140° F for about 5 minutes will soften the material for easier installation. Always avoid inconsistent stretching or overstretching of the PTFE seal.To prevent the PTFE ring from snapping into the wrong groove, cover wear ring grooves with plastic tape.
After seal installation, assembly of the cylinder may be difficult if the piston seal is loose on the piston or the cylinder has an inadequate leading edge chamfer. In such cases, compress the piston seal with belting or a suitable hose clamp. If the piston seal must pass threads or any other sharp edges during the cylinder assembly, cover the edges with plastic tape or wrap.
SEAL INFORMATION MATERIAL 15% GLASS FILLED PTFE SEAL RUBBER ENERGIZER TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 12 FT/SEC PART NUMBER (Piston Seal)(Type of Seal) - (Size) -
To obtain best results from any style of piston cup, it is recommended that the piston properly support the heel of the cup. Recommended diametral clearance between the piston and cylinder wall are as follows:
1" to 2-1/4" .005"
2-1/2" to 4-3/4" .008"
5" to 10" .010"
The height of the machined shoulder most frequently used to control squeeze on the heel of the cup is as follows:
Cups 1/8" thick .116/.119"
Cups 5/32" thick .146/.149"
Cups 3/16" thick .178/.181"
The follower plate should be approximately .110" smaller than the ID of the cup. To reduce any tendency of the cup to extrude under pressure a phonograph finish may be machined on the surface of the follower plate.
NOTE: The 8000 piston cups are center punched.
SEAL INFORMATION MATERIAL 90A URETHANE TEMPERATURE RANGE -65° to +220° F PRESSURE RANGE 0 to 1,200 PSI SPEED 3 FT/SEC PART NUMBER (Piston Cup Type)(Bore) - (Hole Size) -
This medium duty wiper is molded in nitrile rubber.
SEAL INFORMATION MATERIAL NITRILE TEMPERATURE RANGE -22° to +212° F SPEED 3 FT/SEC PART NUMBER (Prefix) - (ID) x (OD) X (H) -
Molded from filled PTFE and machined to close tolerances these seals feature low friction and excellent wear characteristics. Nitrile o-rings are used for energizers.
SEAL INFORMATION MATERIAL PTFE PISTON SEAL
70A NITRILE ENERGIZERTEMPERATURE RANGE -40° TO +230° F PRESSURE RANGE 0 TO 5,000 PSI SPEED 12 FT/SEC PART NUMBER (Prefix) - (ID) x (W) x (CS1) -
Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes protection the rod seal. This style relieves back pressure by way of slots on the pressure side of the energizer
SEAL INFORMATION MATERIAL FILLED PTFE BUFFER
70A NITRILE ENERGIZERTEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 12FT/SEC PART NUMBER (Prefix) - (ID) x (OD) x (H) -
Molded in nitrile with steel case, this seal is double cased and used to exclude contaminants from cylinder link pins.
SEAL INFORMATION MATERIAL NITRILE SEAL
STEEL CASETEMPERATURE RANGE -40° to +220° F PART NUMBER (Prefix) - (ID) x (OD) X (H) -
This capped piston seal consists of a filled PTFE cap, a T-shaped NBR energizer, and two split nylon backup rings. It exhibits low friction, high sealability, and excellent resistance to extrusion and wear.SEAL INFORMATION MATERIAL PTFE PISTON SEAL NYLON BACK-UP NITRILE ENERGIZER TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 6,000 PSI SPEED 4.5 FT/SEC SUFFIX BR= BRONZE FILLED PTFE CAP PART NUMBER (Prefix) - (OD) x (ID) x (W) -
SG - 'Seal Guard' Metallic Rod
Each Seal Guard Wiper consists of two flexible bronze rings which are held in place by a nitrile cushion ring. The cushion ring absorbs side loads and energizes the wiper to maintain close contact with the rod. Particularly suited for hostile environments, seal guard wipers shave off sand, grift, slag, flux, paint, moisture, chips and slivers. Seal Guard Wipers are long-lasting, self-adjusting, and offer low friction. Seal Guard Wipers can be installed in standard Hercules® Sealing Products “ST” or “D” Style grooves by increasing the “F” gland dimension to the “F” Throat Diameter shown.SEAL INFORMATION MATERIAL 660 BRONZE
70A NITRILETEMPERATURE RANGE -40° to +240° F PART NUMBER (Prefix) - (Size) -
Totally interchangeable with Style PS1400 PTFE piston seals, Style PS1500 piston seals are molded from tough 60 shore D durometer polyurethane. During the molding process, a .002 in. thick band of molybdenum is molded into the outside diameter of the seal ring for reduced friction. PS1500 piston seals are easily stretched over the piston and recover rapidly with the elimination of the 'cold flow' characteristics found in PTFE seals. Piston diameter 'F' dimensions are given for pistons without wear rings.
SEAL INFORMATION MATERIAL POLYURETHANE SEAL RUBBER ENERGIZER TEMPERATURE RANGE -40° to +200° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Piston Seal)(Type of Seal) - (Size) -
Style RU seals are molded from high quality urethane and designed specifically for rod applications. P = HIGH PERFORMANCE MATERIAL UP TO +275° F