LIkon infatable seals brochure by A Smit

LIKON INFLATABLE SEALS Page 1

Since you inflate them, we supply them at

Deflated prices Introduction

Where ever you encounter hard to seal applications our inflatable seals are an effective way to deal with this sort of challenges. By using inflatable rubber seals to pressurize the sealing space a secure and leak tight sealing is achieved. Industrial applications range from medical applications to nuclear power plants. For long an inflatable seal has been an expensive necessity. In a market where there's been little competition the advantages of this type of sealing cannot be fully exploited. Costs were simply too high. To LIKON these rubber products are not that different from other spliced seals, except from the fact that extra attention is given to air or liquid tightness. While quality comes as standard and equals that of established suppliers, our prices make inflatable seals far more accessible and affordable. Advantages 

Leak proof closure



Positive pressure sealing

 

Design simplification No compression set

Warranty

All our parts come with a full guarantee. If our inflatable seals do not meet specifications, we’ll take them back and replace them.

LIKON INFLATABLE SEALS Page 3

Index Introduction ...................................... Page 1 Applications...................................... Page 3 Manufacturing .................................. Page 5 Operating method ............................ Page 6 Types of expansion

Function ........................................... Page 6 Sealing

Handling

Cross sections explained .................... Page 8 Elastomer types ................................. Page 9

Installation & Use .............................. Page 12 Preparation, cleaning

Design Guide ................................... Page 14 Cross section overview....................... Page 15 Connections & Valve stems ................ Page 17 Contact............................................ Page 17

LIKON INFLATABLE SEALS Page 4

Applications Powder & Bulk Solids Processing Hoppers, Mixers, Screeners, Valves, Gates Inflatable seals on the mouth of the hopper valve of metering devices expand radially down to form a leak-tight seal around the fill opening in a transfert cart. The inflatable seals on the filler spout expand radiallly outward to effect a dust-tight seal against the inside of the bag neck during filling. Slide Gate Valves

Inflatable seals provide the tightest seal possible for controlling the flow of very fine materials. The valve seal does not inflate until the blade is firmly in position, the seal than inflates, creating a leak-free seal. The inflatable seal deflates before the blade opens again. Butterfly Valves

Inflatable seals are ideal for butterfly valves in tight sealing applications. The clearance between the deflated seal allows for torque rotation of the disk and eliminates the damaging effect of abrasion of the seal. When the disk is fully closed, the seal inflates inward against its edge to effect a leak-free condition. Mixers

Inflatable seals with pre-moulded corners effect leak-tight seals for hinged or sliding covers on accesways and other openings in mixers and other powder and bulk solids processing equipment. Conveyers Breaks and Guides Inflatable bladders represent two different ideal solutions to controlling and preventing jams on conveyor systems. Positioned alongside the product at the outer extremities of the conveyor belt or rolls they can be inflated against the product to temporarily interrrupt the flow while the jam clears downstream. Alternatively the bladders can be located underneath the product flow and actvivated to release the contact between belt and rollers, thereby interrupting flow while the jam clears. Food Processing Meatpacking Smokehouse Door Seals

Inflatable seals are mounted on the door to expand radially out and make a make smoke-tight seal against the doorframe. For houses operating under normal conditions, EPDM rubber is used. For applications requiring extra high temperatures, we offer silicone rubber, and, if there are high concentrations of animal fats, nitrile rubber.

LIKON INFLATABLE SEALS Page 5

Wineries

Lid seals for Variable Capacity Tanks For wineries using variable capacity fermentation tanks, inflatable seals are important to ensure airtight lids during the delicate fermentation process. Robotic Handling Expandable gripping bladders are easily installed in robot hands. Round, rectangular or linear bladders grip flat interior or exterior surfaces. Circular bladders grip cylindical I.D. or O.D. surfaces. Minimal moving parts mean easy maintenance. Medical: Sterilizer Door Gaskets Inflatable seals are used in chemical and steam sterilizers. Special certified materials with extended chemical resistance such as Fluorosilicone can be supplied when required. Semiconductor Processing Thermal processing, Circuit board imaging, Load lock The load lock inflatable seal simplifies the hardware necessary to achieve a seal in vacuum, and speeds the process of taking the wafer, loading it into the lock, and making critcal measurements relative to its surface and its circuitry. Inflatable seals are used to create a positive seal between the printed circuit board material and the imaging platen as a vacuum is drawn. Paper Industry Doctor blades, Maintenance shut down seals, Load lock Seals Inflatable bladders are used to clamp doctor blades of varying thickness in their holders, and to apply uniform pressure along the blade length in inkers, coaters, and other critical doctor blade applications. Transportation High Speed Railroad Train Door Seals

Inflatable seals have found advantageous use in connection with sliding doors for modern railroad passenger cars.

LIKON INFLATABLE SEALS Page 6

Transom and door seals

To securely seal transom and sliding doors on yachts, inflatable seals both guarantee watertightness and easy operations. Nuclear Power Seals Air locks, Reactor head gaskets, Gate seals, Reactor cavity seals For maximum leak-tightness and reliability, the gates are generaly supplied with double inflatable seals of fully moulded construction (rather than extruded construction). Fabric reinforcement is also incorporated for additional structural integrity and better resistance to rupture and wear.

Manufacturing LIKON inflatable seals are manufactured under tight quality controls to assure conformance to specifications and product uniformity. Seals are manufactured in different ways: - Extruded with vulcanised joints or ends - Extruded with preformed corners or with moulded corners with vulcanised joints or ends - Moulded, thus seamless - Moulded, seamless and reinforced with nylon, Nomex 速, Kevlar 速, glassfibres or Dacron 速

FABRIC REINFORCED EXTRUSIONS Likon can also supply you with extruded fabric reinforced profiles. These are ideally suited for straight seals with plugged ends. Profiles can be supplied in coils up to 250 metres, depending on the dimensions of the section. Profiles are made to customer specification

Operating method LIKON inflatable homogeneous elastomeric seals show a high modulus of elasticity and considerable tensile strength. The seals are designed to be fitted into grooves and are restricted to low pressures to prevent bursting. Inflatable seals expand and retract with the pressurization and deflation of the seal within a groove. The exact groove and gap dimensions are critical in the design and production of the correct seal for your application. Inflatable seals used in high pressure applications must be captive in slots or grooves within specified dimensions. Never pressurize or inflate a seal to the maximum when any one face of the groove is open!!

LIKON INFLATABLE SEALS Page 7

Inflatable seals used in low pressure applications are secured by their base and work freely outside the confines of a groove. However, the maximum pressure cannot be applied until their contact face (grooved/toothed side) is against the item to be sealed Points of attention are the different retention systems, allowing different applicable pressures.

Confined working space

Open working space

Types of expansion Depending on the shape of the seal and the position of the valve position inflatable seal can expand in different directions and planes.

Axial expansion

Inward radial expansion

Outward radial expansion

Function Sealing

Oven seal

Dam seal

Door seal

Handling

Lifting

Holding

Clamping/Pressing

LIKON INFLATABLE SEALS Page 8

Cross sections explained The main issues regarding cross-section selection are required pressures and amount of expansion. In food and pharmaceutical industries applications, avoiding contaminants building up on the seal is also a major issue. Certain cross sections therefore have fewer crevices and are easier to clean. A seal with base is a common cross section. It can be fastened in place using the foot, while its wall provides a good combination of durability, pressure capacity, and range of travel. There are usually used around doors and hatches. A baseless seal delivers the same performance as the footed seal, but is held in place by friction. It is in places without room for a footed seal, or where retainer and counter part can keep it in place. A footless seal should not be glued in place when using the large expansion it allows for its width. This does however effect durability and pressure capacity. A channel seal handles heavy-duty applications and mounts in a groove or metal retainer that supports its sides and helps keep it in place. It may be held in place by adhesives or simply by friction with the sidewalls. The footed snap seal delivers relatively large expansion for its width, it can close big gaps, but itâ&#x20AC;&#x2122;s less durable and aloows for less pressure . To withstand wear the contact surface has a bead. A heavy-duty snap seal handles higher pressures and is more durable than standard footed snap seals. But it delivers less travel and has no foot to act as a mounting point. Instead, it is held in place with adhesives. This seal is widely used on food and pharmaceutical-processing equipment. Straight sides make it easy to clean and it has no crevices to trap debris. A heavy-duty channel seal handles higher pressures but doesn't have much expansion. The sidewalls are non-reinforced, to allow them stretch when the seal is inflated and deliver the necessary expansion. In food and pharmaceutical industries applications, avoiding contaminants building up on the seal is also a major issue. Certain cross sections therefore have fewer crevices and are easier to clean. For extra heavy or uneven loads and rough mating surfaces, sealing pads can be placed atop any of the seals mounted in retainers.

LIKON INFLATABLE SEALS Page 9

Elastomer types EPDM Ethylene-propylene diene rubber Versatile in use, very good flexibility, resistant to abrasion, resistant to wear and tear, resistant to ozone and weather, resistant to low temperatures, can be used to protect against washing and spraying agents, excellent for profile cords, not usable in conjunction with petrol, solvents, and mineral oils. International designation EPDM/EPM Resistance to Hardness available 30-90° Shore A Lyes Excellent Resistance to temperature -40°C to 150°C Petrol Not suitable Short term peak temperature Up to 180°C Benzole Not suitable 2 2 Tensile strength in kp/cm (N/mm ) 200 (20) Foodstuffs' Suitable Tensile elongation in% 450 Solvents, aliphatic Bad Properties Solvents, aromatic Not suitable Abrasion Good Solvents, halogene Not suitable Resistance to flex cracking Very good Oils and greases Bad Elongation/Tensile strength Good Acids Very good Flexibility Good Water Very good Notch strength/strength of structure Moderate Chloroprene rubber

All-purpose synthetic rubber, flame resistant, resistant to abrasion, very robust, good dielectric strength, particularly recommended for exposure to ozone and weathering. International designation Hardness available Resistance to temperature Short term peak temperature Tensile strength in kp/cm2(N/mm2) Tensile elongation in% Properties Abrasion Resistance to flex cracking Elongation/Tensile strength Flexibility Notch strength/strength of structure Resistance to light Resistance to oxidizing Resistance to ozone Resistance to wear and tear Weathering effect

CR 30-90° Shore A -30°C to 120°C Up to 150°C 250(25) 450 Good Very good Good Good Good Very good Good Very good Very good Very good

Resistance to Lyes Petrol Benzole Foodstuffs' Solvents, aliphatic Solvents, aromatic Solvents, halogene Oils and greases Acids Water

Very good Moderate Not suitable Suitable Moderate Moderate Bad Good Good Very good

LIKON INFLATABLE SEALS Page 10

Elastomer types Continued

Silicone rubber / Likonsil Resistance to high temperatures, odorless and tasteless, non-toxic, can be sterilized in accordance with foodstuffs regulations, resistant to sea water and corrosive salt solutions, not to be used in conjunction with steam, concentrated acids and lyes, swells strongly under the effect of aromatic solvents. International designation MVQ/SI Resistance to Hardness available 40-80° Shore A Lyes Not suitable Resistance to temperature -70°C to 180°C Petrol Not suitable Short term peak temperature Up to 225°C Benzole Not suitable 2 2 Tensile strength in kp/cm (N/mm ) 80(8) Foodstuffs' Excellent Tensile elongation in% 250 Solvents, aliphatic Not suitable Properties Solvents, aromatic Not suitable Abrasion Moderate Solvents, halogene Not suitable Resistance to flex cracking Bad Oils and greases Good Elongation/Tensile strength Bad Acids Not suitable Flexibility Good Water Good Notch strength/strength of structure Moderate Resistance to light Excellent Resistance to oxidizing Very good Resistance to ozone

Excellent

Fluorinated rubber Resistant to extreme temperatures even over 200°C. Very good mechanical properties and high resistance to tearing at high temperatures. Excellent for exposure to sunlight, ozone, and weather. Not recommended for use in conjunction with esters and ketones. International designation FKM Resistance to Hardness available 65-90° Shore A Lyes Very good Resistance to temperature -30°C to 225°C Petrol Excellent Short term peak temperature Up to 350°C Benzole Good 2 2 Tensile strength in kp/cm (N/mm ) 200(20) Foodstuffs' Not suitable Tensile elongation in% 400 Solvents, aliphatic Very good Properties Solvents, aromatic Good Abrasion Moderate Solvents, halogene Good Resistance to flex cracking Good Oils and greases Good Elongation/Tensile strength Good Acids Very good Flexibility Moderate Water Good Notch strength/strength of structure Almost Good Resistance to light Excellent

LIKON INFLATABLE SEALS Page 11

Elastomer types Continued

Butyl rubber Least permeable rubber to air, steam and other gases, good resistance to heat, oxygen, ozone, and many chemicals and solvents, good electrical properties (isolating), good resistance to abrasion and tear propagation. International designation IIR Resistance to Hardness available 40-85째 Shore A Lyes Very good Resistance to temperature -40째C to 130째C Petrol Not suitable Short term peak temperature Up to 150째C Benzole Not suitable 2 2 Tensile strength in kp/cm (N/mm ) 170(17) Foodstuffs' Suitable Tensile elongation in% 400 to 800 Solvents, aliphatic Not suitable Properties Solvents, aromatic Not suitable Abrasion Good Solvents, halogene Not suitable Resistance to flex cracking Moderate Oils and greases Not suitable Elongation/Tensile strength Good Acids Very Good Flexibility Slight Water Good Notch strength/strength of structure Good Resistance to light Very good Resistance to oxidizing Very good Resistance to light Very good Resistance to oxidizing Very good Resistance to ozone Very good Resistance to wear and tear Good Weathering effect Very good Other elastomer types are available on request. Properties given are for guidance only and are affected by temperature, concentration etc. in specific applications. They can not be guaranteed. Please consult our technical staff. Prope

LIKON INFLATABLE SEALS Page 12

Installation & Use of Inflatable Seals Preparations Prior to installing an inflatable seal, the retainer must be inspected for the absence of dirt, roughness, weld splatter, flashes and sharp edges. Cleaning Clean the retainer by manner of brushing, derusting, degreasing and allowing the cleaning agent to dry or evaporate. Always make sure the cleaning agent does not contain ingredients that effect the elastomer used. Welds must be flushed. In general the retainer surface must be smooth and free from sharp spots.

Before Installing the IFS-seal Seals must be neatly placed in a properly sized retainer. Since inflating the inflatable seal allows for a virtually 100% air tight seal, glueing the inflatable seal is only necessary where 100% air tightness is required, or in cases where inflatable seal are mounted vertically or upside down. Upside down or vertical

no glueing required

fixing/glueing required

Glueing Applying glue in the cleansed retainer groove to secure the inflatable seal in place may require applying a primer first. Please check the application guidelines of the glue manufacturer. Glue may only be applied to the bottom of the seal.

Special adhesive tape If glueing is not an option or unwanted there are adhesive tapes available especially for EPDM and SILICONE seals to fixate the seals. Any glueing of other parts of the seal will decrease itâ&#x20AC;&#x2122;s ability to fully inflate.

LIKON INFLATABLE SEALS Page 13

Installing the IFS-seal The air connection valve or tube must be fitted first for proper positioning. When running an inflatable seal into the retainer groove, make sure the air connection is not strained as this may cause a loosening of the valve from the actual seal or a rupture of the joining of the tube. Never use a sharp object to run seals into the retainer clamp. After positioning the seal apply pressure to make it settle well. To allow for the glue to dry or vulcanize the seal may be left pressurized.

Using the seal We recommend not to pressurize the inflatable seal to the maximum allowed pressure before proper installation in its retainer. The maximum pressure an inflatable seal withstands, depends highly on the gap between the top of the retainer and the counter surface. The bigger the gap, the more likely the seal will extrude through this gap, causing more stress to the inflatable seal. This effects the life span of the inflatable seal. Thus: a smaller the gap will increase the life cycle of an inflatable seal. The width of the gap also effects the maximum pressure the seal will withstand. In a fully enclosed surrounding (no gap) the stress is limited to the air connection and high pressures can be applied. Pressure is applied by compressed air (most common), liquids or gels. Liquids, e.g. hydraulic fluids, and gels may effect certain elastomers. Please consult our technical staff.

LIKON INFLATABLE SEALS Page 14

Design Guide Fax sheet Date:

E-mail address:

Your Name:

Company Name:

Tel:

Fax:

Purch. office:

Rep Name:

Tel:

Fax:

Quote required by:

 Qty of seals required (prototype):

Sketch: (Also attach equipment drawing and or picture of

Application Description:  Sealing

 Qty of seals required / month:

application if possible)

 Handling (Lifting, Holding, Pressing, Clamping)

Seal exposed to: Pressure across seal: psi/Bar or required force (if handling): lbf/kPA Pressure media inside seal:  Air  Nitrogen  Water  Other: Frequency of inflation: Duration of inflation: Temperature at the seal environment:

°C

 HiP  LoP  Development  Custom

Profile#

Stock Materials:  MVQ (Silicone)  SBR (Styrene-Butadiene) Other Stock Materials:  EPDM  CR Chloroprene  VMQ Silicone  FKM Viton  IIR Butyl  FVMQ Fluorosilicone  Other : ……..

Shape:  Circular Seal  Rectangular Seal  Combination Expansion:  Axial  Internal Radial  External Radial See Dimension Picture & enter data from Catalog for new applications OR your existing seal / available area. *If Profile is selected, verify the minimum radius from the catalog.  Straight Length Seal See Dimension Picture & enter data from Catalog for new applications OR your existing seal / available area. SL = length be sealed or required length to lift  Retracted end (Standard)  Expanded end  Expandable end  Fitting in the end plug (Note: Molded Cone shown below is not required)  Fitting in the foot (Enter distance required to fitting or valve on the Dimension Picture.) Fitting:

 1/4” Tube

 1/2 ” Tube

 Brass 1/8”

Valve:

 Length ………… Optional for CVL Valve:  Elbow  Hose barb

Material:  Brass (Standard)  Stainless Steel

 Stainless 1/8”

Length: :

Thread:

 Other

The equipment must accept a min ¼”inflation tube. If yopu choose a metal fitting the equipment must also accept a hex nut fitted to the valve

h+1mm = Housing

 Custom: Diameter:

Comments: ……………………………………………………………………………… ……………………………………………………………………………… ………………………………………………………………………………

Ø =

………………………………………………………………………………

h= Fitting and Cone

……………………………………………………………………………… ……………………………………………………………………………… ………………………………………………………………………………

Øn= Ø + 1mm =

Øm=

……………………………………………………………………………… ……………………………………………………………………………...

........................................................................................................ ........................................................................................................

LIKON INFLATABLE SEALS Page 15

Cross section overview Non-reinforced sections Seal Profile

Section# Grade

Height inch mm

inch

IFS-1 IFS-2

CR EPDM

7/16 5/8

11,11 15,9

11/16 1 1/4

17,5 31,75

IFS-4

EPDM

1 1/4

31,75

76,2

EPDM

IFS-3

Seal with Base Seal Profile

IFS-20 IFS-39

IFS-302

IFS-7

Round Profile IFS-7w IFS-8 IFS-12 IFS-13 IFS-17

Grooved Seal Angled

VMQ

IFS-31

1/2 -

Height

12,7 24,6 20

2 1 -

Width

EPDM -

1/4 1/2

EPDM

1/2

EPDM EPDM EPDM EPDM EPDM EPDM

IFS-10 IFS-11

VMQ CR

IFS-102

VMQ

Height

1/2 3/4 3/8

50,8

Expansion inch mm

Wall Connection inch mm

1/8 3/8

3,175 9,5

1&2 1&2

25,4

1&2

3/4

25,4

3/4

49,2

152,4

inch

VMQ

inch

22,23

inch

Section# Grade

IFS-101

7/8

Section# Grade IFS-5 IFS-6

Seal Profile

EPDM

Section# Grade IFS-202

Seal with Base Seal Profile

EPDM

Width mm

19 19 20

Expansion

Wall

inch

6,35 12,7

3/4 1 1/2

19 38,1

3/16 7/16

4,76 11,11

1&2 1&2

12,7

50,8

3/4

1&2

12,7 19

2 3

50,8 76,2

Expansion

3/4

25,4

7/8

22,23

1 1/4

31,75

3/8

152,4

9,5

Wall

50,8

1,6

inch

5/8 0.197

15,9 5

1 0.256

25,4 6,5

5/16 0.06

7,94 1,52

0.197

17,5

Width

0.256

63,5

9,5

2 1/2

12,7

Height

Connection

Width

1/2 -

inch

1&2

inch

1&2

17,5

40,6

25 20

Expansion

0.06

Wall

4 3

Connection

1&2 1&2 1&2 1&2 1&2 1&2

Connection 1&2 1&2

LIKON INFLATABLE SEALS Page 16

Cross section overview Non-reinforced (continued) Seal Profile

Tapered Seal Profile

Square Seal Seal Profile

Rectangular Seal Seal Profile

Section# Grade

Seal Profile

Width

Expansion

inch

IFS-9 IFS-19

VMQ

1/2 0.669

12,7 17

5/8 0.866

15,9 22

1/4 -

6,35 -

IFS-101

VMQ

25,4

IFS-26

IFS-102

Nitrile VMQ

Section# Grade

0.74 -

Height

19 32

0.71 -

34,4

Width

Wall

inch

0.126

3,2

0.15

Expansion

Connection

inch

3,8

Wall

1&2 1 1 3 3

Connection

IFS-14

EPDM

1/2

12,7

1/2

12,7

0.063

1,6

1/8

IFS-25

VMQ

1.9

48,3

1.7

43,2

1/8

3,175

Section# Grade

Height

Width

Expansion

inch

Wall

Connection

IFS-16 IFS-18

EPDM EPDM

0.182

4,62

0.528

13,4

0.032

0,81

1&2 1&2

IFS-24

EPDM

0.585

14,9

1.44

36,6

0.13

3,3

1&2

IFS-23

FKM

Section# Grade

0.44

Height

11,1

0.75

Width

inch

34 14

16,5

24,9 13

1.34 -

IFS-408

VMQ

Height

12,7

16,6

Width

Expansion

inch

0.98 -

Section# Grade

Butyl VMQ VMQ

inch

IFS-22 IFS-402 IFS-403 Inverted Seal

Height

Wall

1&2 Connection inch

1&2 3

10,3

Expansion

inch

Wall

Connection

IFS-401 IFS-404

VMQ VMQ

10,8 23

13,6 23,6

8,7 15

3 3

Inverted seal IFS-406

VMQ

16,5

IFS-405

with bead

IFS-407 IFS-410 IFS-411 IFS-412

VMQ VMQ VMQ VMQ VMQ

31,5 12

31,5

11,6

35 20

16,9 35

22 6

1,2 -

3 3 1 1 3

LIKON INFLATABLE SEALS Page 17

Cross section overview Non-reinforced (continued)

Other sections available : please inquire

Connections Connection types 1) 2) 3) 4) 5)

Tube, any length 1/4" or 1/2" Barbed brass valve stem Barbed SS valve stem O-ring stem, Ă&#x2DC;11mm cone Barbed stem, cone

Tube splicers

Contact information Correspondence address: P.O BOX 23 NL-5410 AA ZEELAND (N.BR.) NETHERLANDS Office address: KERKSTRAAT 101 NL-5411 CK ZEELAND (N.BR.) NETHERLANDS TEL. FAX URL EML

: +31-(0)486 45 00 50 : +31-(0)486 45 00 45 : WWW.LIKON.INFO : SALES@LIKON.INFO

Applications shown throughout this brochure are typical. Your specific application should not be under taken without independent study and evaluation for suitability. For specific application recommendations consult LIKON. Failure to select the proper sealing products could result in property damage and/or serious personal injury. While the utmost care has been used in compiling this brochure, we assume no responsibility for errors. Subject to change without notice.