Utilizing a double lip of nitrile bonded to a carbon steel case, this wiper prevents contaminant ingression at the wiping lip and around the outer case.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | URETHANE |
| TEMPERATURE RANGE | -30° to +200° F |
| SPEED | 3 FT/SEC |
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A double acting piston seal with many features; two compact seal edges to concentrate the load against the dynamic surface, a cavity between the two external seal edges to retain fluid (reducing friction and wear), side grooves to allow pressure to load the energizer in all working conditions, high sealing performance at low pressure, excellent wear-resistance, and high resistance against extrusion.
SEAL INFORMATION MATERIAL 97A URETHANE SEAL
70A NITRILE EXPANDERTEMPERATURE RANGE -22° TO +210° F PRESSURE RANGE 0 TO 5,800 PSI SPEED 1.5 FT/SEC PART NUMBER (Prefix) - (OD) x (ID) x (W) MAXIMUM EXTRUSION GAP Pressure (PSI) 725 1450 2900 4350 5800 Max Diametrical Gap (inches) 0.047 0.031 0.016 0.010 0.007 -
MCU Heavy Duty Metal Clad
Utilizing a sturdy metal case, these wipers are molded from the same high performance urethane used in our Heavy Duty U-seals. Built for severe service, these wipers are capable of surviving hostile environments.SEAL INFORMATION MATERIAL 92A URETHANE TEMPERATURE RANGE -65° to +230° F PART NUMBER (Prefix) - (Size) -
If your design is of medium to high pressure it is recommended that you utilize fabric reinforced rings. The following is a guide to pressure rating of multiple rings, including flat bottom rings.
SEAL INFORMATION MATERIAL FABRIC REINFORCED RUBBER
AND BUNA-NTEMPERATURE RANGE -40° TO +250° F PRESSURE RANGE SEE CHART BELOW SPEED 1.5 FT/SEC PART NUMBER (Prefix) - (ID) - (OD) A homogeneous ring may be also used for sealing at low pressure. Do not include the homogeneous ring in calculating pressure rating. Due to the different material, it is difficult to rate this type of ring. If you wish to use all homogeneous rings, tests should be conducted to verify design stability.
PRESSURE RATING OF MULTIPLE RINGS PRESSURE P.S.I. NUMBER OF RINGS 250 - 500 3 500 - 2,000 4 2,000 - 5,000 5 5,000 - 8,000 6 -
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) -
Used primarily as an anti-extusion device for u-seals, these back-up rings combine high performance with very low friction. 'ST' suffix designates a split ring.
SEAL INFORMATION MATERIAL PTFE TEMPERATURE RANGE -100° TO +500°F PRESSURE RANGE VARIES ACCORDING TO DIAMETRAL CLEARANCE PART NUMBER (prefix) - (Dash No.) (config.) -
Constructed of a rubber seal lip with a rubberized fabric heel, these seals feature a poly-acetal bearing ring. These seals offer excellent sealing ability and high pressure capability. Commonly are used with our MSR retention rings.
SEAL INFORMATION MATERIAL NITRILE / FABRIC BASE
ACETAL BEARINGTEMPERATURE RANGE -22° to +220° F PRESSURE RANGE 0 to 6,000 PSI SPEED 1.5 FT/SEC PART NUMBER (Prefix)-(ID) x (OD) x (H) -
If your design is of medium to high pressure it is recommended that you utilize fabric reinforced rings. The following is a guide to pressure rating of multiple rings, including flat bottom rings.
SEAL INFORMATION MATERIAL FABRIC REINFORCED RUBBER
AND BUNA-NTEMPERATURE RANGE -40° TO +250° F PRESSURE RANGE SEE CHART BELOW SPEED 1.5 FT/SEC PART NUMBER (Prefix) - (ID) - (OD) A homogeneous ring may be also used for sealing at low pressure. Do not include the homogeneous ring in calculating pressure rating. Due to the different material, it is difficult to rate this type of ring. If you wish to use all homogeneous rings, tests should be conducted to verify design stability.
PRESSURE RATING OF MULTIPLE RINGS PRESSURE P.S.I. NUMBER OF RINGS 250 - 500 3 500 - 2,000 4 2,000 - 5,000 5 5,000 - 8,000 6 -
Designed to fit on one or two piece piston, 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 70A NBR SEAL
NYLON BACK-UP & BEARINGTEMPERATURE RANGE -22° TO +212° F PRESSURE RANGE 0 TO 6,000 PSI SPEED 1.5 FT/SEC -
Consisting of a nitrile seal and two split acetal bearing, this assembly is used in light duty applications and can be installed on one or two piece pistons.
SEAL INFORMATION MATERIAL NITRILE SEAL
ACETAL BEARINGTEMPERATURE RANGE -22° to +212° F PRESSURE RANGE 0 to 3,000 PSI SPEED 1.5 FT/SEC -
The twin lip design helps solve difficult rod sealing problems by providing lower friction, increased stability, and high dynamic lip force, while preventing air penetration from outside the cylinder. -
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) -
Specifically designed as piston seals, these u-seals are engineered to seal on their outside diameter. They offer extended service life and maximum reliability in piston sealing. MAXIMUM EXTRUSION GAP PRESSURE / MAX. DIAM. GAP: | 1,000 PSI/.032 | | 3,000 PSI/.015 | | 5,000 PSI/.012 | | 6,000 PSI/.009 | -
Molded from 70A nitrile for high sealability they employ a hard nylon anti-extrusion ring as a companion piece.
SEAL INFORMATION MATERIAL 70A NITRILE
ACETAL BACK-UPTEMPERATURE RANGE -20° to +220° F PRESSURE RANGE 0 to 4,000 PSI SPEED 3 FT/SEC PART NUMBER (PREFIX) - (OD) -
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 -
PTFE Vee RingsSEAL INFORMATION MATERIAL PTFE TEMPERATURE RANGE -100° to +400° F PRESSURE RANGE 0 to 5,000 PSI SPEED 12 FT/SEC PART NUMBER (Prefix) - (Size)