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Spring energized seal

Spring energized seals

Spring energized seals

HiPerSeal is a U,V or C - shape spring energized seals function with single acting sealing element. The spring which energizes the PTFE jacket actuates the sealing legs(lips) of the seal. The system pr...

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  • Spring energized seals
  • Spring energized seals
  • Spring energized seals
  • Spring energized seals
HiPerSeal is a U,V or C - shape spring energized seals function with single acting sealing element. The spring which energizes the PTFE jacket actuates the sealing legs(lips) of the seal. The system pressure assists the spring in creating a leak tight seal between the sealing lips and the mating metal parts. The springs assist in slight misalignment, jacket wear, and maintaining a consistent sealing pressure against the desired target.

HiPerSeal has been designed specially to overcome the problems associated with PTFE composite or other high performance plastic like UHMW-PE and elastomer. They are suitable for static rotary, and reciprocating application in temperatures from cryogenic to 300℃, pressure from vacuum to 700kg/cm², and speed up to 20m/s, to survive the most corrosive environment.

Standard HiPerSeal are precisely machined to fit AS 568A glands in radial rod, piston and axial face-seal configurations. HiPerSeal can replace most of O-ring used in mechanical seal and extend total sealing performance and service life in very aggressive chemical, petrochemical process.
HiPerSeal are used in dynamic and static applications where elastomer seals cannot meet the extreme operating conditions of harsh environment. Furthermore, HiPerSeal can be a very effective alternative solution to replace any V or U packing set applied in hydraulic components where low friction, high lateral load, corrosive or steam environment are required.
 
Main Applications
 
HiPerSeal is designed for thermal and/or corrosive extremes that make the requirement for a stable seal leg unobtainable using other designs or material. It demonstrates excellent capability to the control of friction loads and compensation of manufacturing tolerance or higher side load effects.
 
Some typical applications that are idea for HiperSeal are described as followings.
-As face seals for swivel joints in loading or unloading arm equipment
-As needle seals for the paint valves in painting equipment
-As shaft and static seals in vacuum pumps
-As seals for the filling valves of beverage or beer bottling plants and other foodstuffs industry
 
-As better alternatives in hydraulic components, e.g. high pressure cylinders, low friction cylinders, steering units, and shock absorbers
-In chemical plant equipment and construction
-In the automobile and aerospace industries
-In metering units
-In process equipment and vessel construction
-High wear resulted from high lateral load or poor concentric running condition

 
 

Advantages of HiPerSeal
-Excellent dry running capability and high sealing efficiency after a short running-in period
-Reduced wear and friction due to better sealing material characteristics
-Versatile sealing pressure through various spring and seal profile design
-Excellent chemical and thermal resistance
-No volumetric change caused by swelling or shrinkage, good dimensional stability
-Compact seal, well fit in standard O-ring grooves in accordance with AS568A
-Very long shelf life
-Sterilize in autoclaves or with any possible agen except radioactive radiation
-Prevent any contamination from the seal
-No stick-slip effect even at very low speed
-Very low friction
-Very small start-up or breakaway force especially for prolonged period out of operation or intermediate operation.



V-type HiPerSeal with Cantilever Spring/Features
 
-V-shape spring with moderate spring rate(ratio of loads vs. Deflection)
-Long beam leg design puts the spring load exact at leading edge of PTFE seal
-Replace Standard Inch fractional and AS 568A O-ring without any modification
-Standard spring is made of austenite series stainless steel
-Other special corrosion resistant materials such as Hastelloy, Elgiloy are also available
-Temperature range from-150℃ to 260℃
-Vacuum to 210kg/cm²standard and 700kg/cm²extended heel
-Optional scraper lip design for abrasive medias or environment

Recommended Application
 
•Reciprocating rod and piston seal
•Rotating shaft with speed 4 m/s max
•Wide tolerance and misaligned glands(static) 
•Face seal for external or internal pressure environment
•Dynamic applications up to 260℃
 
 
H-type HiPerSeal with Helical Wound Ribbon Spring/Features
 
•High spring rate for medium and heavy load application
•Produces evenly distributed load across each individual band
•Replace Standard Inch fractional and AS 568A O-ring without any modification
•Standard spring is made of stainless steel, but NACE compliant Elgiloy and Hastelloy springs are also available
•Temperature range from -150℃ to 300℃
•Vacuum to 210 kg/cm²standard and 700kg/cm²extended heel
•Not suitable for wide gland tolerances, eccentricity or misalignment.
 
Recommended Application
 
•Face seal for external or internal pressure environment
•Static rod and piston seal
•Very slow dynamic seals
•Vacuum and cryogenic sealing application

C-type HiPerSeal with Canted Coil Spring/Features
 
•C-shape spring with very flat spring rate(load vs.deflection curve)
•Available in several different spring loads
•Standard 302 series stainless steel springs
•Hastelloy springs also available upon request
•Available face seal shapes for internal or external pressure application
•Not the best choice for the abrasive medias due to the geometry 
 
 
Recommended Applications
 
•Reciprocating rod and piston seal
•Rotary shafts < 1.5 m/s
•Friction sensitive applications 
•Diameter < 1/2’’ and Cross sections < 3/32’’
•Wide tolerance and misaligned glands
 
 
STANDARD COMPOUNDS


PTFE
Material code Reference Compound Color Temp.(℃) Application Characteristics Products
MIN. MAX.
1 01T VIRGIN PTFE WHITE -190 +230 .CHEMICAL INDUSTRY                .FOOD INDUSTRY .HIGH CHEMICAL RESISTANCE                                 .LOW COEFFICIENT OF FRICTION .BACK-UP RINGS        .HIPERSEALS
2 03T PTFE+CARBON GRAPHITE BLACK -190 +315 .HEAVY MECHANICAL STRESS        .WATER/OIL HYDRAULICS           .ROTARY SEALING .HIGH WEAR RESISTANCE                                   .CREEP RESISTANCE .GLIDE RINGS                .BACK-UP RINGS          .PNEUMATIC GUIDANCE TAPE  .HIPERSEALS
3 02T PTFE+BRONZE GREEN -156 +260 .HEAVY MECHANICAL STRESS        .HYDRAULIC APPLICATIONS .OUTSTANDING WEAR RESISTANCE                        .EXTRUSION RESISTANCE                                   .CREEP RESISTANCE .GLIDE RINGS                       .HYDRAULIC GUIDANCE TAPE  .BACK-UP RINGS          
4 UPE UHMW-PE WHITE -200 80 .HYDRAULIC APPLICATIONS .OUTSTANDING WEAR RESISTANCE                             .GOOD OXIDATION RESISTANCE                        .OUTSTANDING EXTRUSION RESISTANCE                  .OUTSTANDING SEALING UNDER LOW PRESSURE .BACK-UP RINGS                 .SPRING ENERGIZED SEALS  
4G GPE Ultragold® YELLOW CRYO GENIC 93 .HYDRAULIC APPLICATIONS .OUTSTANDING WEAR RESISTANCE                            .SELF-LUBRICATING PROPERITIES                     .OUTSTANDING EXTRUSION RESISTANCE                 .OUTSTANDING PERFORMANCE UNDER CRYOGENIC APPLICATION  .SPRING ENERGIZED SEALS  
5 05T PTFE+CARBON FIBER GREY -260 +310 .WATER HYDRAULICS             .SEAWATER                         .SHORT STROKES WITH HIGH FREQUENCY .VERY GOOD WEAR RESISTANCE PROPERTIES IN WATER      .EXCELLENT COMPRESSIVE STRENGTHS                     .SUITABLE FOR DYNAMIC APPLICATIONS AT HIGH SPEED .GLIDE RINGS           .HIPERSEALS
6 06T PTFE+GLASS FIBER WHITE -190 +290 .MEDIUM-DUTY HYDRAULIC APPLICATIONS .HIGH CHEMICAL RESISTANCE      .HIGH CREEP RESISTANCE   .ELECTRICAL PROPERTIE LIKE VIRGIN PTFE .GLIDE RINGS   .BACK-UP RINGS   .GUIDE RINGS   .GASKETS
7 07T PTFE+EKONOL BEIGE -260 +320 .MEDIUM MECHANICAL STRESS          .SOFT SEALING SURFACES           .ROTARY SEALING .LIMITED CHEMICAL RESISTANCE                           .LIMITED USE IN HOT WATER .HIPERSEALS    .ROTARY GLIDE RINGS   .LIP SEALS
8 08T PTFE+E-CARBON BLACK -190 +290 .MEDIUM MECHANICAL STRESS         .HARD SEALING SURFACES       .WATER/OIL EMULSIONS  .CHEMICAL RESISTANCE LIMITED BY CARBON .HIPERSEALS   
9 09T PTFE+GRAPHITE DARK GREY -190 +260 .LOW MECHANICAL STRESS            .SOFT SEALING SURFACES .CHEMICAL RESISTANCE LIMITED GRAPHITE .HIPERSEALS
10 10T PTFE+GLASS FIBER+MOS2 GREY -190 +260 .MEDIUM MECHANICAL STRESS       .MEDIUM-DUTY HYDRAULIC APPLICATIONS .HIGH CREEP STRENTH                                      .HIGH CHEMICAL RESISTANCE                         .OUTSTANDING WEAR RESISTANCE                       .ELECTRICAL PEOPERTIES LIKE VIRGIN PTFE .HIPERSEALS              .ROTARY SEALS             .BACK-UP RINGS
PE 01K PEEK BEIGE OR BLACK -73 +316 .HYDRAULIC APPLICATIONS .GOOD CHEMICAL RESISTANCE                                .GOOD WEAR RESISTANCE                                    .HIGH MAXIMUM USE TEMPERATURE                             .LOW FLAMMABILITY                                   .EXCELLENT ELECTRICAL PROPERTIES                         .GOOD RADIATION RESISTANCE .BACK-UP RINGS          .HIPERSEALS

Installation—for installation in open grooves



Assembly of piston seal in open groove.                                   
Sealing lips in mounting direction.
Values for lead-in chamfer: 
see table below. All edges rounded.
We recommend: Rmin = 0.5mm

Assembly of piston seal in open groove.
Back of the seal in mounting direction
All edges rounded.
We recommend: Rmin = 1mm



Assembly of rod seal in open groove.
Sealing lips in mounting direction.
Values for lead-in chamfer:
 see table below.
All edges rounded.
We recommend: Rmin = 0.5mm


Assembly of rod seal in open groove.
Back of the seal in mounting direction.
All edges rounded.
We recommend: Rmin = 1mm






 

Cross-section Equiv.O-ring cross-section(mm) dmin.(mm) Dmin.(mm) H-0.1(mm) R(mm) S(MM)
A 1.78 12.0 15.0 0.5 0.4 2.0
B 2.62 20.0 21.0 0.6 0.4 2.0
C 3.53

 
30.0 25.0 0.7 0.6 2.5
D 5.33 40.0 30.0 0.9 0.8 3.0
E 6.99 55.0 45.0 0.9 0.8 3.0


(Medium) (static) (dynamic) (rotary)
Low-molecular gases and fluids.Fluids with low surface tension.Low temperatures. Rt≦1.2 µm  (Ra≦0.3 µm) Rt≦0.82 µm  (Ra≦0.2 µm) Rt≦0.4 µm  (Ra≦0.1 µm)
Low viscosity fluids.High molecular gases,ar and natural gas. Rt≦2.4 µm  (Ra≦0.6 µm) Rt≦1.2 µm  (Ra≦0.3 µm) Rt≦0.8 µm  (Ra≦0.2 µm)
Normal and high viscosity fluids.Water,oils and phosphate esters. Rt≦3.2 µm  (Ra≦0.8 µm) Rt≦1.6 µm  (Ra≦0.4 µm) Rt≦0.8 µm  (Ra≦0.2 µm)

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