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Spring Energized PTFE-Seals
The GFD spring energized PTFE seal is the newest generation of spring actuated Teflon seals. These seals consist of a special precision jacket/lip made of Teflon (or other high performance polymers) and a corrosion resistant stainless steel spring.
In this combination, the spring is forcing the seal lips against the gland and the rod walls. The pressure assists the spring force.
The spring compensates the lip wear, hardware tolerances, eccentricities and provides permanent resilience to the seal lips. The GFD design with sealing lip and spring arrangement guarantees more leakage protection than conventional lip seals.
More than 50 different PTFE compounds (and other high performance polymers) are available or can be composed for jacket fabrication within a very short time.
The standard designs cover radial and axial seals for dynamic as well as static applications.
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OmniSeal® seals are high performance spring energized PTFE seals. These are capable of handling extreme service conditions and are used in a variety of applications, such on high temperature / high pressure (HTHP) Ball Valves, rocket and jet engines, robotics, racing cars, oil and gas applications and others.
>Temperature: -260°C to +300°C.
>Pressure: Vacuum to 10,000 bar.
>Surface speeds: 40m/s.
>Low and controlled friction, low wear.
>Broad chemical compatibility.
>High pressure and temperature combinations.
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Spring-energized seals made of PTFE are used for sealing reciprocating pistons and rods as well as rotary and swiveling applications.
Highlights
outstanding chemical resistance against aggressive media
suitable for high temperature ranges between –95°C and +300°C
suitable for media pressures up to 700 bar
Typical Applications
needle seals in painting lines
metering devices
valve seals in bottling lines
automotive and aerospace applications
medical technology/endoscopy
solenoid valves
measuring technology/HPLC-technology
general industrial machinery
chemical equipment
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Features:
- Teflon® compounds with almost universal chemical compatibility
- Stainless steel springs for corrosion resistance
- Wide temperature range - 400ºF to +600ºF
- Static and dynamic applications
- Vacuum to 60,000 psi
- Can run dry or lubricated
- Low friction seals
- Sizes up to 60" diameter
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Bal Seal Engineering canted-coil springs produce a nearly constant force over the working spring deflection unlike other types of springs where the spring force is directly proportional to deflection. Our products are available in continuous lengths or circular spring form with outside diameters from 0.020" (0.51mm) and wire sizes as small as 0.0025" (0.64mm). Spring forces are determined by material, coil size, and geometry. Bal Seal Springs are be custom engineered to meet your application requirements.
Bal Seal can accommodate high volume production requirements while meeting today's exacting quality standards.
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The MSE® seal consists of a PTFE or other polymer energized by a corrosion-resistant metal spring. When the seal is seated in the gland, the spring is under compression and applying force on the gland-sealing surfaces. This creates a tight barrier to prevent gas or fluids from leaking. The spring also provides resiliency to compensate for seal wear, gland misalignment or eccentricity. While spring force provides adequate force for sealing at low pressure, at high pressure the system pressure augments the spring force to provide an even tighter seal. MSE seals are precision machined from PTFE, filled PTFE and other high-performance polymers. MSE seals work consistently under a wide array of temperatures and pressures. Greene, Tweed offers over 100 jacket materials, four standard spring materials, and four standard spring designs to meet your sealing needs.
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TBA Mechanical Seals are available compliant with standard UNI EN 12756 (ex DIN 24960).
They are supplied with springs outside of the product, so they can be used in particularly dirty and/or viscous liquids and can be fitted to parallel shafts and sleeves. No shoulder or stepped shaft is required.
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Mechanical seals manufactured in a wide range of general services, made according to standard UNI EN 12756 (ex DIN 24960).
Using a conical spring is wound onto the shaft allows the seal to compensate greater positioning errors than usual and there is no risk of clogging when it is in contact with very dirty and/or viscous liquids.
This type of seal is available for both clockwise or anticlockwise shaft rotation.
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Type HS20 is Single-coil conical spring unbalanced seal.
The HS20 series seal are extremely rugged & reliable & therefore used in wide range of sealing applications.
These seals have very few parts & hence can be easily assembled or dismantled. The seal arrangement does not warrant any modification even in case of conversion from gland packing.
The compact design eliminates the requirement of extra radial & axial space for its installation.
Applications :
Generally used for handling corrosive chemicals, hydrocarbons, general & light chemicals.
Material :
Seal Faces : Sic/carbon Vs Ceramic/Sic./TC
Secondary Seals : Viton/PTFE/GFT
Metal Components : SS-316
Operating Limits :
Shaft Dia. : 10 to 100mm
Pressure : up to 10 Bars
Temp. : -20 to 180°C
Speed : up to 25 m/s
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HR20 Type HR20 is externally mounted internally balanced multi-coil spring seal.
The unique feature of this type of seal is that, it eliminates the shaft step or sleeves for balancing.
These seals are externally mounted & hence the metal parts including the springs do not come in contact with the circulating media & therefore can be use for corrosive or abrasive media. sealing.
The compact design eliminates the requirement of extra radial & axial
space for its installation.
Applications :
Generally used for handling corrosive chemicals, hydrocarbons, general & light chemicals.
Material :
Seal Faces : Sic/carbon Vs Ceramic/Sic./TC
Secondary Seals : Viton/PTFE/GFT
Metal Components : SS-316
Operating Limits :
Shaft Dia. : 10 to 100mm
Pressure : up to 10 Bars
Temp. : -50 to 180°C
Speed : up to 25 m/s
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TYPE F1 & F14 are general-purpose multi-coil spring unbalanced seals. Designated as F1 & F14 for the unbalanced Versions with 'O' Ring & PTFE wedge respectively.
Shaft fretting is minimized due to lower spring loads provided through wedge or 'O' Rings, occupies less stuffing box area due to its narrow cross-section & compact design.
These Seals can be easily assemble of dismantled through circlip provided & can be change to Balance version of its type merely by changing the carbon face only & can be provided with single, double or tandem arrangement with external seal support systems & devices
Applications :
Generally used in Petrochemicals, Light Hydrocarbons & General Industrial fluids.
Material :
Seal Faces : Carbon Vs Ceramic/Sic./TC
Secondary Seals : Viton/PTFE/GFT
Metal Components : SS-316
Operating Limits :
Shaft Dia. : 14 to 150mm
Pressure : up to 10 Bars
Temp. : -50 to 280°C
Speed : up to 25 m
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H15/H16 Are single coil spring unbalanced seals, these seals are simple in design & reliable & rugged enough for the most difficult applications.
Designated as H15 & H16 for 'O' Rings & 'V' Packing used as Secondary seals respectively.
Special notches enhance the required driving torque & hence the seal is independent of direction of rotation. Non-clogging spring design enables these seals to be reliably used in situations involving abrasive, corrosive & viscous fluids generally handled by high Temperature pumps.
Applications :
Generally used in refineries, fertilizers, nuclear plants & petroleum pipelines.
Material :
Seal Faces : Carbon/TC/Sic. Vs Ceramic/RB Sic./TC
Secondary Seals : Viton/PTFE/GFT
Metal Components : SS-316
Operating Limits :
Shaft Dia. : 25 to 150mm
Pressure : up to 10 Bars
Temp. : -50 to 280°C
Speed : up to 15 m/s
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Type B76 & B76W are single coil balanced mechanical seals, reliable & rugged enough for variety of applications.
Designated as B76 & B76W for 'O' Ring & PTFE wedge type Secondary Seals respectively. The balanced & unbalanced version can just be obtained by simply changing the carbon face assembled through circlip provided.
Non-clogging spring design enables these seals to be reliably used in situations involving abrasive, corrosive, and viscous media. generally handled by high-pressure pumps.
Applications :
Used in high pressure pumps, refineries, fertilizers, nuclear plants & petroleum products.
Material :
Seal Faces : Carbon Vs Sic./TC
Secondary Seals : Viton/PTFE/GFT
Metal Components : SS-316
Operating Limits :
Shaft Dia. : 10 to 150mm
Pressure : up to 30 Bars
Temp. : -50 to 180°C
Speed : up to 15 m/s
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Five different styles with maximum pressure ratings of 1500 PSI. Selected models are available in aluminum or iron. EPR seals are available on most models.
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Available Clutches
Industrial Overrunning Clutches
• Magna Torque (MT) Overrunning Clutch
• Bi-Directional Overrunning Clutch
• Overrunning Clutch
• MTR Roller Ramp for Clutch Couplings, Dual-Drive & Turning Gear
• Enclosed Overrunning Clutch
Intermittent Motion Clutches
• Single Revolution Clutch
• Intermittent Drive Assembly
• Intermittent Drive Packages
• Hilliard-Twiflex Centrifugal Clutch
• Linkless Centrifugal Clutch
Torque Limiting Clutches
• Slip Clutch Friction Torque Limiter
• Jaw Type Overload Release Clutch
• Ball Detent Overload Release Clutch
Drive Train Clutches and Outdoor Power Equipment
• Bi-Directional Overrunning Clutch for Turf and Lawn
• Hand Disconnect Clutch
• Drive System for Walk-behind Equipment
• Clutches for Turf and Lawn
Available Brakes
• Permanent Magnet Brakes
• Electric Brakes
• Hilliard Twiflex Series/Shunt Brakes
• SE Caliper Brakes
• MK Electrically Released Calipers
• Twiflex Disc Brakes
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Light to heavy duty braking applications are served by these fast-acting calipers. Sensitive and rapid response to air pressure level also makes them ideal for tension control applications.
Friction pads are secured by quick-release clips.
The MS, MX and GMRP series have spring retraction to insure ample pad clearance when the brake is released. The MS and MX series have an interchangeable range of air actuators
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For the emergency stop. Used in handling and on the machines with strong inertia with an obstruction minimum!
- Tightening by spring and electromagnetic loosening
- Consumption of energy limited to 15 W
- Time of closing: 100 ms
- Hysteresis of rearmament: 150 ms
- Frequency of release authorized: 1000/h
- Couple to 610 Nm
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SBD series Safety brakes are high power braking devices acted on low speed shafts, extensively used as emergency braking for various large and middle cranes of port handling machinery at hoist and low speed shaft of luffer mechanism, mine winders, lifters, oblique belt conveyors, cable cars and ropeway cranes at drive system.
Design Features
● Normal closed design, safe and reliable; disc spring is applied to closed and hydraulic released.1. (Note: SBD80-160 is pressure spring, SBB250-425 is disc spring made.)
● Maneuverable action and short braking time.2. braking time is 0.4-0.6s.
● With limit switch the brake can realize interlocking protection and failure indication by PLC.
●High performance (non-asbestos) lining; Steady friction coefficient; No damnification to braking disc; No sensitivity to water and high salt content air.
● Excellent sealing ensure the brake long service life.
● Convenient of mounting and ease of maintenance.
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Disc brakes to slow down, stop, maintain, control. Automatic offsetting or manual of the wear of the trimmings to guarantee a constant air-gap. Standard fixing centers horizontal or vertical
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Material:
Steel version:
sleeve in steel quality class 5.8, ball in steel, spring in spring steel D
Stainless steel version:
sleeve 1.4305, ball 1.4034, spring 1.4310
Surface finish:
Steel version black oxide finish,
stainless steel version natural finish,
ball in steel or stainless steel, hardened
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Steel Spring Plungers
Stainless Steel Spring Plungers
Steel Spring Plungers (Metric)
Stainless Steel Spring Plungers (Metric)
Delrin Tip Steel Spring Plungers
Delrin Tip Steel Spring Plungers (Metric)
Delrin Tip Stainless Steel Spring Plungers
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WDS Index plungers are available in several types and material specifications
Materials include:
Hardened Steel Chemical Black Finish with options of steel or nylon ball
Case Hardened Steel
303 Stainless Steel and Stainless Ball
Stainless Steel with Nylon Body
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The product family Spring Plungers covers the following article groups:
- EH 2203. Spring Plungers with ball and internal hexagon
- EH 2203. Spring Plungers with bolt and internal hexagon
- EH 2204. Spring Plungers, plastic
- EH 2205. Spring Plungers with ball and slot
- EH 2205. Spring Plungers with bolt and slot
- EH 2205. Spring Plungers with ball, headed
- EH 2206. Spring Plungers with internal hexagon
- EH 2206. Spring Plungers with internal hexagon and seal
- EH 2207. Spring Plungers, smooth
- EH 2207. Spring Plungers, long
- EH 2208. Spring Plungers, smooth, with collar
- EH 2208. Spring Plungers, smooth, without collar
- EH 2209. Spring Plungers, double ended
- EH 2210. Spring Bodies
- EH 2214. Lateral Spring Plungers
- EH 2215. Lateral Plungers, smooth (with / without sealing)
- EH 2215. Excenter for lateral plungers, smooth
- EH 2215. Lateral Plungers with thread (with / without sealing)
Additionally to the metric version we have also the following inch version available from stock:
- EH 2B02. Spring Plungers with bolt and slost
- EH 2B03. Spring Plungers with bolt and internal hexagon
- EH 2B05. Spring Plungers with ball and slot
As leading manufacturer with long experience in production of spring plungers we offer a product range for almost all applications. Also special constructions are available within short time upon request.
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The spring plunger with integrated detection (ref. 03020) is equipped with a proximity detector which can start a control signal. At the same time position and detection element this push rod is available of M6 to M10. The bodies, fingers and springs are out of steel. It is possible to order a push rod in mode normally opened or normally closed. It can be used in harsh environment in a beach of temperature of - 25° with +70°C and meets standard IP65. A mini diode (LED) inserted makes it possible to control the state of the open or closed push rod.
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At the very latest when, because of a power failure (intentional or not) or a malfunction something has to be done to safeguard man and machine, hydraulic clamp Ratio-Clamp® - the clamping device from Hänchen - is just what you need.
Boasting a retention force of up to 450 kN, the hydraulic clamp holds the piston rod in whatever position it is in at that particular moment. Without having to rustle up some extra power (no extra energy) and for an unlimited period of time. The clamping device Ratio-Clamp® is approved by the German Technical Inspection Agency (TÜV). Nor does the development of specific solutions (larger rod diameters, intermediate sizes, greater clamping forces…) pose a problem to the Hänchen specialists.
The possibilities for your application:
Rod-Ø from 10 - 140 mm,
clamping forces from
1 - 450 kN. Other
dimensions on request.
Other products of the range of services:
- Hydraulic cylinders
- Test cylinders
- Complete system solutions (Ratio-Drive®)
- Pressure intensifiers
- Industrial shock absorbers
- Special cylinders of all kinds
- Mounting parts/assembly utilities/accessories
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