SAFE RUBBER PRODUCT

CRITICAL ISSUES REGARDING SILICONE SHEETING

Global demand for silicone sheeting and products is increasing in both the established and emerging markets. But some new suppliers to
the industry are providing sheeting that is far below the exacting quality standards that we take for granted. Some production practices
and end products in some countries are dangerous – to the workforce and the end user. Not all silicone sheeting is suitable for gaskets and
other components used in the food and beverage industry and other critical environments.
In particular there are issues around Extractable Levels, Volatile Loss and FDA White List (Positive List)

Useful Definitions:-
Extractable Levels - are the amount of chemicals that can escape into a liquid from the silicone when it is in prolonged contact with that liquid. Volatile Loss - is the amount of chemicals that escape from the silicone when it is subjected to raised temperatures. FDA White List - list of permitted ingredients & the manufacturer has a legal obligation to use these white list ingredients.

INDEPENDENT TESTING RESULTS
J-Flex Silicone Sheet Products are independently tested and comply with the requirements issued by the US Federal Food & Drug
Administration (FDA) Title 21, Chapter 1, sub-chapter 8, Section 177.2600. They also comply with the German Food Standards BfR
Empfehlung XV and colour bleed test according to BfR Empfehlung part B11 + peroxide levels.
Food Safety,
EC No.1935:2004
FDA Extraction Test FDA Limit Test Results
1st Extraction distilled water 20.0mg/inch² 0.24mg/inch²
2nd Extraction distilled water 1.0mg/inch² 0.05mg/inch²
1st Extraction hexane 175.0mg/inch² 47.84mg/inch²
2nd Extraction hexane 4.0mg/inch² 1.91mg/inch²
CONCLUSION:
The silicone material tested meets the extractive requirements
specified in FDA 21 CFR 177.2600 Class 1 - Rubber Article
intended for repeated use in aqueous and fatty food contact
(White List ingredients).
BfR Colour Bleed Test
Following tests in which Silicone samples were immersed in water, 10% aqueous ethanol; 3% aqueous acetic acid and Arachis oil.
Test method MSG-LAB-SOP-PML-1006. The test summary reports that the Silicone materials pass the colour bleed test requirements of:
• No Detectable Bleed based on the specifications of the German Budesgesundheitsant (BfR) Empfehlung IX of Part 11.
• The Netherlands ‘Verpakkingen-en-gerbruibsartenbesluit’ of the Netherlands Werewet PartB, Section 7.
• The Belgium Moniteur Belg of 24th September 1976 Section 3 – Migration d’un colorant au pigment
All Silicone elastomer products produced by J-Flex Rubber Products
and the processing methods used comply with the substance control
requirements of the following directives:
GADSL V1.0 (formally known as ILRS List 101 and VDA list 232-101)
EC Directive 76/769/EC
EC Directive 2002/95/EC (RoHS)
EC Directive 2002/96/EC (WEEE)
EC Directive 2000/53/EC (ELV)
EC Directive 2003/11/EC
EC Directive 2004/1/EC
EC Directive 2006/122/EC
And any subsequent
modifications to these
core directives.
None of the following substances are contained in; or used in
the production process of any of the silicone elastomer products
(either solid or cellular) supplied by J-Flex Rubber Products.
Lead (Pb),cadmium (Cd), hexavalent chromium (Cr6+), mercury
(Hg), phthalate based plasticisers, polycyclic aromatic
hydrocarbons (PAH), Short chain chlorinated parafins (SCCP),
polybrominatedbiphenyl ether and polybrominated diphenyl
ether flame retardants (this includes octabromobiphenyl ether,
pentabrombiphenyl ether and decabromodiphenyl ether). These
products and associated production processes are free of any
animal derivitives and are latex free.
None of the cellular silicone elastomer products supplied by
J-Flex contain azodicarbonamide blowing agents.
None of the products supplied by J-Flex contain Perfluorooctane
Sulfonates (PFOS).

BANNED SUBSTANCE USE IN SILICONE ELASTOMER PRODUCTS SUPPLIED BY J-FLEX
Under the Treaty of Rome the test covers all European Member States
The Silicone materials were also subjected to a test to determine levels of hydroxyl-peroxides as laid down in BfR XV Silicone 111 6.
The test summary showed that the silicone materials pass the limit with ‘No positive reaction for peroxide.’
Independent test were carried out by Intertek MSG – Molecular Spectrosopy – The Wilton Centre, Redcar, TS10 4RF. Test report No.
CHEMIST/W000424RL001 20th April 2010
In addition our materials are approved to UK WRAS Drinking Water Approval and meet the Framework Regulation (EC 1935/2004) which
states that food contact materials shall be safe. They shall not transfer their components into the food in quantities that could endanger
human health, change the composition of the food in an unacceptable way or deteriorate the taste or colour of foodstuffs.
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

GASKET RUBBER

The cost of leaky joints in industry today is staggering. Out-of-pocket costs run into billions of dollars annually in lost production, waste of energy, loss of product and, most recently, impact on the environment. These
problems are increasing, not decreasing. It behooves all of us to consolidate our knowledge and experience to solve or at least minimize these problems. This publication is being produced because we, as gasket
manufacturers and suppliers, are constantly called upon to solve sealing problems after the fact. Toooften we find insufficienttime and attention has been given to:
. proper design of flanged joint
. installation procedures and
. selection of the optimum gasket material required to solve a particular sealing problem.
Wewill endeavor to outline in this publication those areas we believe to be essential in a properly designed, installed and m"aintainedgasketed joint.
We believe most people involved with the design, installation, and maintenance of gasketed joints realize that no such thing as "zero" leakage can be achieved. Whether or not ajoint is "tight" depends on the sophistication
of the methods used to measure leakage. In certain applications the degree of leakage may be perfectly acceptable if one drop of water per minute is noted at the gasketed joint. Other requirements are that no
bubbles would be observed if the gasketed joint was subjected to an air or gas test underwater and a still more stringent inspection would require passing a mass spectrometer test. The rigidity of the test method would be determined by:
. the hazard of the material being confined
. loss of critical materials in a process flow
. impact on the environment should a particular fluid escape into the atmosphere
. danger of fire or of personal injury
All of these factors dictate proper attention must be given to:
. design of flange joints or closures
. proper selection of gasket type . proper gasket material
. proper installation procedures
Care in these areas will ensure that the best technology goes into the total package and will minimize operating costs, pollution of the environment and hazards to employees and the general public.
WHY GASKETS ARE USED
Gaskets are used to create a static seal between two stationary members of a mechanical assembly and to
maintain that seal under operating conditions which may vary dependent upon changes in pressures and
temperatures. If it were possible to have perfectly mated flanges and if it were possible to maintain an intimate
contact of these perfectly mated flanges throughout the extremes of operating conditions, a gasket would
not be required. This is virtually an impossibility either because of . the size of the vessel and/or the flanges . the difficulty in maintaining such extremely smooth flange finishes during handling and assembly
. corrosion and erosion of the flange surfaces during operations.
As a consequence, relatively inexpensive gaskets are used to provide the sealing element in these mechanical
assemblies. In most cases, the gasket provides a seal by external forces flowing the gasket material into the
imperfections between the mating surfaces. It follows then that in a properly designed gasket closure, three
major considerations must be taken into account in order for a satisfactory seal to be achieved.
. Sufficientforce must be available to initially seat the gasket. Stating this another way, adequate means
must be provided to flow the gasket into the imperfections in the gasket seating surfaces. . Sufficient forces must be available to maintain a residualstresson the gasket under operating conditions
to ensure that the gasket will be in intimate contact with the gasket seating surfaces to prevent
blow-by or leakage. . The selection of the gasket material must be such that it will withstand the pressures exerted against the gasket, satisfactorily resist the entire temperature range to which the closure will be exposed and withstand corrosive attack of the confined medium.
EFFECTING A SEAL
A seal is affected by compressing the gasket material and causing it to flow into the imperfections on the
gasket seating surfaces so that intimate contact ismade between the gasket and the gasket seating surfaces
preventing the escape of the confined fluid. Basically there are four differentmethods that may be used either
singly or incombination to achieve this unbroken barrier. . Compression (Figure 1). This is by far the most
common method of effecting a seal on a flange joint and the compression force is normally applied by
bolting. . Attrition (Figure 2). Attrition is a combination of a dragging action combined with compression such
as in a spark plug gasket where the spark plug is turned down on a gasket that is both compressed
and screwed into the flange
By heat, such as in the case of sealing a bell and spigot joint on cast iron pipe by means of molten
lead. Note, however, that after the molten lead is poured, it is tamped into place using a tamping tool
and a hammer.
. Gasket lip expansion. This is a phenomenon that would occur due to edge swelling when the gasket
would be affected by confined fluid, as in the case of elastomeric compounds affected by the confined
fluids, such as solvents, causing the gasket material to swell and increase the interaction of the gasket
against the flange faces.
Generally, gaskets are called upon to effect a seal across the faces of contact with the flanges. Permeation
of the media through the body of the gasket is also a possibility depending on material, confined media,
and acceptable leakage rate.
GASKET SEATING
There are two major factors to be considered with regard to gasket seating.The first is the gasket material itself. 'The ASME Unfired Pressure Vessel Code Section VIII, Division 1
defines minimum design seating stresses for a variety of gasket materials. These design seating stresses range
from zero psi for so-called self-sealing gasket types such as low durometer elastomers and O-rings to
26,000 psi to properly seat solid flat metal gaskets.
Between these two extremes there are a multitude of materials available to the designer enabling himto make
a selection based uponthe specific operating conditions under investigation. Table No.1 indicates the more
popular types of gaskets covered by ASME Unfired Pressure Vessel Code.
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

Mouldings tailor made to your requirements include: bellows, suckers, discs, rubber to
metal bondings, pads, boots, valve seals, diaghrams and sheets etc.
We mould by compression, transfer and injection moulding techniques - ask for further
information about these techniques. J-Flex is the comprehensive source for all of
your moulding requirements, be it small, medium or large volume.
Our polymer range is vast - if the compound is available, we can mould it. Suffice to say we
use all current natural and synthetic polymers, including EPDM, Viton® Silicone, Nitrile,
HNBR, Aflas® and Perfluoroelastomer. We sample new moulds to complete your
satisfaction and approval before we commence bulk supply. Deliveries by
agreement - but never late!
Consider the options, then let J-Flex mould your requirements into shape. Custom made
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

RUBBER MOULDING

Custom made Mouldings

Mouldings tailor made to your requirements include: bellows, suckers, discs, rubber to
metal bondings, pads, boots, valve seals, diaghrams and sheets etc.
We mould by compression, transfer and injection moulding techniques - ask for further information about these techniques.
J-Flex is the comprehensive source for all of your moulding requirements, be it small, medium or large volume.
Our polymer range is vast - if the compound is available, we can mould it. Suffice to say we use all current natural and synthetic polymers, including EPDM, Viton® Silicone, Nitrile, HNBR, Aflas® and Perfluoroelastomer.
We sample new moulds to complete your satisfaction and approval before we commence bulk supply. Deliveries by agreement - but never late! Consider the options, then let J-Flex mould
your requirements into shape.
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

EXTRUDED

Custom made Extrusions

Whether you are looking for tubing, sleeving, strips, cord or complex profiles, we can supply the extrusion you need, whatever the specification. We can also put high temperature adhesive backing onto many of our extruded products.
Produced in solid and sponge grades of Silicone+EPDM, Neoprene, PVC Nitrile, Natural Rubber, Polyurethane and TPE. Viton® Sponge profiles; strips and cords are a speciality.
We have a choice of over 2,000 existing sections to use - so our experience is good with a wide range of profile geometry. From tiny micro sections to huge profiles, its all the same to J-Flex.
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

introduction product

Welcome to Java Tech-Seal,CV

Java tech-Seal,CV as Sole Distributor products  from J-Flex Rubber products in England

J-Flex Rubber Products If you want high quality, high performance mouldings, gaskets, sheet rubber, extrusions, fabrications, sealants or adhesives - then you’re reading the right brochure.
Just take a quick glance at the front page again. ‘Total Capability for Industry’ is not just us being clever with fancy titles. It’s an expression of our pride, commitment and confidence. J-Flex is a leading international supplier of engineering rubber components and polymer sheetings across all those
key sectors you’ve spotted on that page. We’ve been committed to excellence since we commenced business in 1984: traditional principles of quality service and products coupled to innovative, high-performance
materials critical to contemporary, demanding and fast-moving industries. So what do you get from J-Flex?
Exactly the same service whether you’re a large global player or a smaller venture. Our goal is always to exceed customer expectation and we’ve retained hundreds of loyal customers who can attest to an excellent
business relationship. In summary, we at J-Flex believe we have the experience and resources to make
things happen for our customers all the time; time after time. We export to over 40 countries worldwide and we deliver down the road. Whether it’s a one off order, a regular time-schedule, a JIT delivery or a direct line feed situation you can rely on our professional service and quality products.
J-Flex Rubber Products: Totally Capable Here’s what you can expect:
> Personal service from a sales team high on product knowledge and technical expertise
> An efficient delivery process that delivers what you want, where you want it, when you want it
> A company committed to the best pricing structure for its customers
> A company approved to ISO9001 for many years
> An approved DuPont Genuine Viton® Licensee - your guarantee of quality for quality elastomers
> A specialist company perfectly positioned to provide stock items or bespoke mouldings to your own exacting specifications
> An active, progressive member of GCA and EUSGA
> A company that genuinely incorporates honesty and integrity into its business values int roduct ion
Certificate No.RS 27920
Approved to BS EN ISO 9001:2008
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com

RUBBER SHEETING

High Performance Sheet Rubber

We could go on and on about our Sheeting Range - how we have been market leaders for 15+ years, that we have the biggest physical stock of silicone sheetings in Europe, and that we have one of the widest ranges of Genuine Viton® sheetings in the world, but instead we’ll just let you scan the following list:
> Red, White, Translucent, Blue & Black Silicone
> Fabric Reinforced Silicone Insertions
> Silicone Sponge – plain, fabric finish or adhesive backed
> Metal Detectable Silicone
> MicraSil® – Antimicrobial Silicone
> Magnetic Silicone
> Genuine Viton® A. B. GF. White FDA. Insertion
> Viton® Sponge Sheets
> Fluor-A-Com Commercial Fluoroelastomer
> Fabric Reinforced Diaphragm – NBR. CR. EPDM
> Thin Gauge / Tight Tolerance – CR. NBR. EPDM
> Moulded Sheets
Please see website: www.j-flex.co.uk
If you need our products please contact us at:Tel: +62 31 72179064Fax: +62 31 8535442Mobile: +62 858 50837808Email: sales.javatech @ gmail.com