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Our vee sets are the finest quality available in the industry. While all sets incorporate fabric reinforced rubber pressure rings, one or two urethane rings are included to improve low pressure sealing, when it is feasible. Most sets use nylon adaptors. Properly installed the pressure limits are as follows: 3,000 PSI = 4 VEES 5,000 PSI = 5 VEES 10,000 PSI = 6 VEES CONSTRUCTION CODE Example: FA-2U-3F-MA FA - 1 TOP ADAPTOR 2U - 2 URETHANE VEE RINGS 2F - 2 FABRIC VEE RINGS MA - 1 BOTTOM ADAPTOR V= FLUOROCARBON U= SPECIAL URETHANE VEE H= HYTREL W= WIPER INCLUDED
SEAL INFORMATION MATERIAL FABRIC REINFORCED RUBBER
URETHANE RING/NYLON ADAPTORSTEMPERATURE RANGE -35° to +220° F PRESSURE RANGE 0 to 10,000 PSI SPEED 1.5 FT/SEC PART NUMBER (Type of Seal) (ID) (CS) X (Height) -
The individual vee rings and adaptors listed here are the same high quality product found in our assembled vee packing sets. Stocking individual vee rings allows you to assemble sets to your specific requirements.
RING TYPES
T = TOP ADAPTOR - NYLON
B = BOTTOM ADAPTOR - NYLON/ NEO-FAB
F = NEO-FAB VEE RING
U = URETHANE VEE RING
R = RUBBER VEE RING.
(FOR MORE RUBBER VEE RINGS SEE OUR STYLE 835 RINGS)
SEAL INFORMATION MATERIAL NYLON, NEO-FAB URETHANE TEMPERATURE RANGE -35° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 1.5 FT/SEC PART NUMBER (Prefix) - (ID) (CS) (Type of Ring) -
Style UPU Premium U-Seals are molded from ultra tough urethane for severe service conditions. They feature higher tensile strength and modulus for extrusion resistance. These seals are used in high energy services such as rock drills and shock absorbing devices where high internal heat is generated.
SEAL INFORMATION MATERIAL 93A URETHANE TEMPERATURE RANGE -65° to +300° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height) Standard - Height and cross section are equal, thus giving a square seal. Utilizes type 'D' lip. Typical Part Number UPU25-2.50 Deep - Utilizes the same 'D' lip, but the seal height is greater than the cross section, thus giving a rectangular shape. Typical Part Number UPU25-2.50-37D Type SQB - Same dimensions as the Standard seal. Beveled lip design provides better film breaking. Utilizes type 'B' lip. Typical Part Number UPU25-2.50-SQB Type B - Same dimensions as the Deep seal. Beveled lip design provides better film breaking. Utilizes type 'B' lip. Typical Part Number UPU25-2.50-37B -
UKR u-seals are designed to act as a positive sealing, low friction replacement for conventional rubber u-seals. Molded from polyurethane, UKR u-seals provide long life and high resistance against extrusion. Low friction allows these seals to run smoothly in lubricated or non-lucricated cylinder. Available for rod sealing, the flexible dynamic lip provides very low breakaway friction and steady motion.
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UKP u-seals are designed to act as a positive sealing, low friction replacement for conventional rubber u-seals. Molded from polyurethane, UKP u-seals provide long life and high resistance against extrusion. Low friction allows these seals to run smoothly in lubricated or non-lubricated cylinder. Available for bore sealing, the flexible dynamic lip provides very low breakaway friction and steady motion.
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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.
SEAL INFORMATION MATERIAL 95A URETHANE
70A NITRILE RUBBERTEMPERATURE RANGE -40° to +200° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height) Suffix:
ZF = Fluorotrel (-40° to +235° F)
ZL = Low Temperature Nitrile Sealing Lip
(-65° to +200° F)
ZLF = (-65° to +200° F) -
Style 800 U-seals are molded from tough, abrasion-resistant polyurethane. The four lobed expander ring energizes the sealing lips, even at zero pressure, to help prevent 'weeping' when the system is idle.
FLUOROCARBON = "V"
SEAL INFORMATION MATERIAL 95A URETHANE | 95A FLUOROCARBON TEMPERATURE RANGE -65° to +220° F | -20° to +400° F PRESSURE RANGE 0 to 5,000 PSI | 0 to 2,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height) Standard - Height and cross section are equal, thus giving a square seal. Utilizes type 'D' lip. Typical Part Number U25-2.50 Deep - Utilizes the same 'D' lip, but the seal height is greater than the cross section, thus giving a rectangular shape. Typical Part Number U25-2.50-37D Type SQB - Same dimensions as the Standard seal. Beveled lip design provides better film breaking. Utilizes type 'B' lip. Typical Part Number U25-2.50-SQB Type B - Same dimensions as the Deep seal. Beveled lip design provides better film breaking. Utilizes type 'B' lip. Typical Part Number U25-2.50-37B -
Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.
SEAL INFORMATION MATERIAL BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS TEMPERATURE RANGE -35° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) -
The Style TP-L seal is a zero drift piston seal for bi-directional pressure applications. The locking anti-extrusion rings provide for an easier installation. It is designed to retrofit O-Ring and standard T-seal grooves. The 70 shore A NBR is designed specifically for performance in compression type dynamic seals. Other features include a net molded dynamic sealing surface and backup chamfers.
SEAL INFORMATION MATERIAL BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS TEMPERATURE RANGE -35° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) -
T-Seals are non-spiraling and extrusion resistant to 5,000 psi with improved tolerances.
IB = Intermediate Base, WB = Wide Base
Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.SEAL INFORMATION MATERIAL BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS TEMPERATURE RANGE -35° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) -
STXE wipers are designed to retrofit the standard ST wiper groove while providing superior performance. The o-ring energizer limits dirt intrusion around the O.D. of the wiper. The energizer also makes this wiper more effective in applications with severe side deflections.
SEAL INFORMATION MATERIAL URETHANE WIPER
RUBBER ENERGIZERTEMPERATURE RANGE -40° to +220° F SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) -
Style ST-XL wipers are molded from premium urethane and are direct replacements for Style 'ST' or 'D' wipers. The outside diameter of the ring has a crush lip providing extra interference in the groove. A bead on the shoulder stops contaminants from entering through the groove. The inside diameter is ribbed to prevent pressure traps between the wiper and rod seal.
SEAL INFORMATION MATERIAL 94A URETHANE TEMPERATURE RANGE -40° to +230° F SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) - (Extra Lip) -
A wide range of ST wipers are now offered in the slotted heel design. The slots in the heel allow excess hydraulic fluid to bypass the wiper, preventing wiper blowout.
SEAL INFORMATION MATERIAL 90A URETHANE TEMPERATURE RANGE URETHANE: -40° to +200° F SPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) - (Slotted Heel) -
Style ST wiper rings are precision molded from 90A durometer urethane. Flexible enough to easily snap into a groove yet tough enough to handle difficult rod wiping applications. 'V' tagged wipers are constructed of fluorocarbon.
Product Codes ending in SH are designed with a Slotted Heel. The slots in the heel allow excess hydraulic fluid to bypass the wiper, preventing wiper blowout.
SEAL INFORMATION MATERIAL URETHANE / FLUOROCARBON TEMPERATURE RANGE URETHANE: -40° to +200° F
FLUOROCARBON: -20° to +400° FSPEED 3 FT/SEC PART NUMBER (Prefix) - (Size) - (Alternative Mat.) -
IRON PISTON RINGS
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 in. wider than the maximum piston ring width with a tolerance of +0.003 in./-0.000 in.
- GROOVE DEPTH:
- Grooves must be at least 0.015 in. deeper than the maximum radial wall thickness of the piston ring with a tolerance of +0.003 in./-0.000 in. 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.
SEAL INFORMATION MATERIAL IRON PART NUMBER (Prefix) - (OD) BC = Butt Cut H = Hook Joint END CLEARANCE
End clearance on piston rings depends on ring design, material and application. The following end clearances are provided as a standard for hydraulic cylinder applications.DIAMETER BUTT & ANGLE CUT END CLEARANCE OVERLAPPING JOINT & STEP CUT CLEARANCE .500 - 4.561 .003/.010 .005/.015 4.562 - 19.97 .005/.015 .010/.020 19.971 - 30.5 .010/.025 .015/.030 -
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) -
SFS SPLIT FLANGE SEALS
FOR 4-BOLT SPLIT FLANGE CONNECTORS
Flange seals are a one piece dual durometer urethane static seal. The black outer part is a tough, extrusion resistant 95 Durometer and the yellow inner layer is 57 Durometer that has low compression set and excellent sealing properties. These seals are a direct replacement for o-rings and do not require modification to any split flange groove.SEAL INFORMATION MATERIAL URETHANE TEMPERATURE RANGE -40° TO +200°F PRESSURE RANGE 0 TO 3000 PSI SPEED STATIC PART NUMBER (Prefix) - (Dash No.) -
Style RU9 seals are molded from MDI based Zurcon® Z25 urethane. This seal offers good elasticity with low compression set while maintaining a high level of tribological characteristics. The dynamic seal lip incorporates slide segments that will increase back-pumping capabilities while reducing friction. The RU9 style rod seal is ideal for hydraulic applications where high temperature and high pressure performance is required.
SEAL INFORMATION MATERIAL 95A URETHANE TEMPERATURE RANGE -31° to +270° F PRESSURE RANGE 0 to 5,800 PSI SPEED 1.65 FT/SEC PART NUMBER (Prefix)(CS) - (ID) - (Height) MAXIMUM EXTRUSION GAP PRESSURE 1000 PSI 3000 PSI 5000 PSI 6000 PSI MAX DIAM. GAP 0.032" 0.015" 0.012" 0.009" -
Featuring high pressure and high shock load capability, this seal utilizes the same twin lip design found in Hercules Sealing Products' RTU style. With the main body of the seal molded from high performance polyurethane, this seal incorporates a dynamically designed nitrile energizer and a tough polyacetal anti-extrusion ring. RTUB is capable of pressures up to 10,000 psi in approved applications. Please consult Hercules Engineering for pressures above 6,000 psi.MAXIMUM EXTRUSION GAP PRESSURE/MAX. DIAM. GAP: |2,400 PSI/.040| |3,750 PSI/.032| |6,000 PSI/.024| | 7,500 PSI/.016| |10,000 PSI/.010|
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The RBS style rod buffer seals are a rectangular urethane buffer ring designed to absorb pressure fluctuations thereby protecting the primary rod seal. Some sizes include a radial and axial slot, which faces the pressure, to relieve back pressure between the primary and buffer seal. This simple design is commonly found on older construction equipment.
SL=SLOTTED
SEAL INFORMATION MATERIAL 92A URETHANE TEMPERATURE RANGE -40° to +200° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (ID) X (OD) -
QR, BUNA-N QUAD RINGS
The four-lobed design of these seals provides twice the sealing surface of ordinary o-rings. They can be used in a variety of static and dynamic sealing applications including rotary, reciprocating or oscillating motion.
NOTE: Last three digits of part number corresponds to standard o-ring dash numbers (568-218 = QR-4218)
V = FLUOROCARBONSEAL INFORMATION MATERIAL BUNA-N RUBBER TEMPERATURE RANGE -40° TO +240°F PRESSURE RANGE VARIES ACCORDING TO DIAMETRAL CLEARANCE PART NUMBER (Prefix) - (Dash No.) -
Our Style PSU piston seal, or uniring, is a laminated one piece double acting seal made of cast polyurethane. The tough outer layer is highly resistant to abrasion and is impregnated with molybdenum disulfide to reduce friction. The softer inner layer acts as a static seal and also energizes the OD to make full contact with the bore. This seal may be used to replace an existing Uniring or other seals of the same dimensions - O-rings, O-rings with back-ups, T-seals, U-seals, etc. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
SEAL INFORMATION MATERIAL 60D & 57A
URETHANE COMPOSITETEMPERATURE RANGE -65° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (OD) x (ID) x (Groove Width) -
These piston seals provide bi-directional, low friction sealing with increased stability and superior leakage control. The square cut energizer provides low pressure sealing and eliminates backside leakage. This seal also effectively seals between different fluids on each side of the piston seal, making gas/liquid sealing combinations possible. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
SEAL INFORMATION MATERIAL 40% BRONZE FILLED PTFE SEAL, RUBBER ENERGIZER AND QUAD® RING TEMPERATURE RANGE -40° to +250° F PRESSURE RANGE 0 to 5,000 PSI SPEED 6 FT/SEC PART NUMBER (Piston Seal) - (Size) MAXIMUM EXTRUSION GAP PRESSURE 1000 PSI 3000 PSI 5000 PSI MAX DIAM. GAP
BORE 1-1/2" - 5"0.024" 0.008" 0.005" MAX DIAM. GAP
BORE 6" - 10"0.030" 0.010" 0.006" -
Molded from 93 Shore A polyurethane with a 70 Shore A energizer, this seal utilizes the same groove dimensions as a standard o-ring to T-seal. One or two Style 575 back-up rings may be used for wider grooves. Extrusion resistant by design, this seal also is resistant to rolling and twisting. Installation is an easy two step snap-in procedure with no need to re-size before insertion into the bore. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
F= Fluorotrel, WB= Wide BaseSEAL INFORMATION MATERIAL 93A URETHANE SEAL
70A NITRILE ENERGIZERTEMPERATURE RANGE -65° to +220° F PRESSURE RANGE 0 to 5,000 PSI PART NUMBER (Prefix) - (Size) -
Designed to fit on one or two piece pistons, this seal employs a nitrile seal element, PTFE split back-up rings and polyacetal split bearing rings.
SEAL INFORMATION MATERIAL NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING TEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 3,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (O-Ring Size) -
The Style PSC is a double acting piston seal designed to replace o-rings, quad-rings, and T-seals with the same groove dimensions (O-ring dash number). Style 575 urethane back-up rings may be added to either or both sides of the 'PSC' to accommodate wider groove widths. The PSC is made of 95A Durometer polyurethane, giving it high extrusion and abrasion resistance. The crowned sealing surface produces a positive seal from vacuum to high pressure.
NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.SEAL INFORMATION MATERIAL 95A POLYURETHANE SEAL
70 A NITRILE ENERGIZERTEMPERATURE RANGE -40° to +200° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix) - (O-Ring Size) - (Wide Base) These Style PSC are molded from Fluorotrel which is a tough, wear-resistant material able to run at temperatures up to 275° F. Fluorotrel is also resistant to fluids that are incompatible with polyurethane such as water, glycol, water in oil, mineral oil and petroleum. Consult our Engineering Department for other fluids compatible with Fluorotrel
NOTE: Piston diameter "I" dimensions are given for pistons without wear rings.SEAL INFORMATION MATERIAL 55D FLUOROTREL SEAL
70A NITRILE ENERGIZERTEMPERATURE RANGE -40° to +235° F PRESSURE RANGE 0 to 5,000 PSI PART NUMBER (Prefix) - (O-Ring Size) - (Fluorotrel) -
Compact and easy to install, the Style PSA-65 piston seal is a simple and economical design for pressures up to 3,000 PSI. The assembly consists of a nitrile rubber seal and two polyacetal bearings to support the piston. For 1-piece pistons.
SEAL INFORMATION MATERIAL NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING TEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 3,000 PSI MAXIMUM SPEED 1.5 Ft/Sec. PART NUMBER (Prefix)(Type of Seal) - (Size) -
This style is designed for 2 piece piston. The seal is a molded Nitrile rubber element with bonded rubberized fabric reinforcement and two anti-extrusion polyacetal bearings.
SEAL INFORMATION MATERIAL FABRIC REINFORCED NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING TEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 5,000 PSI MAXIMUM SPEED 1.5 ft / second PART NUMBER (Prefix)(Type of Seal) - (Size) -
Style PSA-58 piston seals combine a heavy duty, fabric reinforced seal with two polyacetal 'L' bearings. This construction allows the seal to withstand pressures up to 5,000 PSI. 'L' bearings also react to pressure to prevent extrusion and support the piston. For 2-piece pistons.
SEAL INFORMATION MATERIAL FABRIC REINFORCED NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING TEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 5,000 PSI MAXIMUM SPEED 1.5 ft / second PART NUMBER (Prefix)(Type of Seal) - (Size) -
Designed to fit on one or two piece pistons, this piston seal employs a nitrile seal for high sealability, nylon split back-ups for extrusion resistance, and two split bearing rings. No further support bearings required.
SEAL INFORMATION MATERIAL 90A NITRILE SEAL
NYLON BACK-UP
NYLON BEARINGTEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 6,000 PSI MAXIMUM SPEED 1.5 Ft/Sec. PART NUMBER (Prefix) - (Size) -
Nylon Step Cut
NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.SEAL INFORMATION MATERIAL GLASS FILLED NYLON SEAL RUBBER ENERGIZER TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 6,000 PSI SPEED 3 FT/SEC PART NUMBER (Piston Seal)(Type of Seal) - (Size) - (Groove Width) -
This seal, molded from high grade polyester with 5% glass fiber and 5% PTFE, may retrofit the PS1800 seals, considering all dimensions are comparable. This seal material, with a high degree of 'memory', stretches over the piston and snaps in the groove for immediate assembly. These seals also feature low friction and high abrasion and extrusion resistance which helps to eliminate assembly damage. Piston diameter 'F' dimensions are given for pistons without wear rings.
SEAL INFORMATION MATERIAL GLASS/PTFE FILLED POLYESTER SEAL, RUBBER ENERGIZER TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 5,000 PSI SPEED 3 FT/SEC PART NUMBER (Piston Seal)(Type of Seal) - (Size)