Water & Sanitary
Compatibility and cleanliness are of ultimate concern when developing sealing solutions for potable water and sanitary applications. Consequently, based on our longstanding experience, we have developed an outstanding range of seals and sealing materials. Most of these are proprietary and specifically designed to meet industry requirements, as well as carry global and regional certifications, including FDA, NSF 61, KTW, WRAS and ACS.
Our Solutions
Seals for the Water and Sanitary Industry
At Trelleborg Sealing Solutions, we offer a wide range of standard products to meet your water and sanitary application requirements. When standard solutions don’t meet your needs, our engineers work together with you to develop a customized sealing component that does.
Find out more about our range of products for your water and sanitary applications:
O-Rings – standard and custom-made O-Rings are available in a wide range of materials and sizes to meet all your application needs.
Custom molded parts
Static Seals
Rotary Seals
- Cassette Seal
- Radial Oil Seal
- Turcon® Varilip® PDR
- Turcon® Roto Glyd Ring®
Hydraulic Wear Rings
Hydraulic Piston Seals
Hydraulic Rod Seals
Surface Finishing – a range of surface treatments are available to improve the friction characteristics of elastomer seals in the production process or their application.
Materials
Seal Materials for Water & Sanitary Applications
Meeting the requirements of the water and sanitary market
Trelleborg Sealing Solutions offers a tailor-made portfolio of materials to meet the demanding requirements of the potable water and sanitary industry. Additionally, we continuously strive to extend our range of materials meeting global compliances.
EPDM
Ethylene Propylene Diene Rubber (EPDM) polymers are fully saturated, non-polar hydrocarbon based elastomers which offer:
- High chemical resistance
- Long life in chlorine, chloramine, hot water and steam
- Suitability for contact with alkaline cleaning fluids
- Enhanced chemical and thermal stability
- Compliance to a variety of sanitary and potable water standards and approvals (FDA, NSF, KTW, WRAS, etc.)
HNBR and NBR
Acrylonitrile-Butadiene Rubber (NBR) is a good choice for applications where seals will not be exposed to harsh cleaning regimes, ozone or superheated steam. These materials offer:
- Good mechanical properties
- Good resistance to hydrocarbons of high aromatic content and water
- Compliant to FDA and 3-A standards
Silicone (VMQ)
Silicone is an extremely versatile material that lends itself to a broad range of application conditions. As a liquid raw material, silicone offers advantages in processing that render it a premier choice of material for technical components where long-term consistency of precision, quality and performance is key. A next generation of low volatile liquid silicone rubber (LSR) materials is bringing exciting, new advantages in processing and application capabilities.
Other characteristics are:
- Good chemical resistance in a wide range of media
- Excellent heat resistance, dielectric strength and cold flexibility
- Neutral in taste and odor
- Good electrical and mechanical dampening properties
- Excellent weather and UV resistance, hydrophobic
- Sterilizable: γ-radiation, steam, EtO
- Biocompatibility – non-allergenic
- Approvals and compliances to WRAS, KTW, NSF and more.
We offer extensive silicone processing, including extrusion, injection, transfer or compression molding and sheeting, as well as state-of-the-art LSR injection molding, with cleanrooms to meet special cleanliness demands.
FKM
The performance of our Fluoroelastomer (FKM) material range has been optimized to meet the specific criteria of the potable and sanitary water industries.
- Very good chemical compatibility and resistance
- Low total organic carbon and metal extractables
- Low long-term compression set characteristics
- Material compliant to FDA, 3-A and USP standards
Turcon® MF
The Turcon® MF range has been formulated to meet the demands of the potable water and sanitary industry. These compounds, which are manufactured from high-purity PTFE grades and additives, offer:
- Excellent friction and self-lubricating characteristics
- Smooth finish, low porosity, and virtually no risk of contamination buildup
- Compatible with almost all chemicals; suitable for use with aggressive media including CIP and SIP regimes
- Operates in extreme temperatures from -253°C/ -423°F to 260°C / 500°F
- Compliant with FDA, KTW, WRAS, W270 standards
Zurcon®
Zurcon® grades such as Z80 and Z81 are specially formulated for use in water and sanitary applications. They are ideal for reciprocating, slow rotating and oscillating situations where high wear resistance is required. Other characteristics are:
- Excellent friction characteristics and high wear resistance
- Operating temperatures from -196 °C to +80 °C / -321 °F to +176 °F
- Compatible with water-based and alkaline cleaning agents, steam cycles below +115 °C / +239 °F
- Low compression set
- FDA compliant
Approvals Certifications
Approvals & Certifications for Potable Water & Sanitary
Seal materials which comply with industry regulations
The materials we use in our seals meet a wide variety of industry regulations, while providing tried and tested performance under manufacturing conditions and stringent cleaning regimes. Working at the forefront of standard development within a number of regulatory committees enables us to quickly adapt to new developments and provide our customers with a competitive edge.
Our seal materials comply with the following certifications and authorities:
- Deutsches Institut für Normung (DIN) EN 549 and EN 14241-1 (Germany): Sets standards for rubber materials for seals and diaphragms used in gas appliances, gas equipment and flue systems.
- Deutscher Verein des Gas- und Wasserfaches e.V. (DVGW) W270 (Germany): Sets tests for microbial growth enhancement of non-metallic materials In contact with drinking water.
- Umweltbundesamt (UBA) KTW (Germany): Includes a list of approved starting elastomers, test methods and limits for values obtained.
- Food & Drug Administration (FDA) CFR 177.2600 (USA): Sections cover requirements for many different polymeric materials, such as section 2600 for rubber materials, in which “positive lists” describe the allowable substances and limitations as well as extraction tests.
- National Science Foundation (NSF) ANSI 61 (USA): Defines the levels of contaminants and impurities that can be leached from elastomer components.
- Water Regulations Advisory Scheme (WRAS) BS 6920 (UK): Two tests related to odor, flavor and taste of water and three tests that examine leachable chemicals and growth of microorganisms.
- Ministerial Decree 174 (DM-174) (Italy): A white-list of elastomer materials for base compounding and tests, including leachable contaminant migration and immersion testing.
- Bundesministerium für Gesundheit ÖNORM B 5014-1 (Austria): Testing regimes and requirements for products in contact with drinking water, and a list of pre-approved materials.
Material
- Ethylene Propylene Diene Monomer (EPDM)
- Fluoroelastomer (FKM)
- Nitrile Butadiene Rubber (NBR)
- Hydrogenated Nitrile Butadiene Rubber (HNBR)
- Isolast® Perfluoroelastomer (FFKM)
- Silicone
- Turcon® Polytetrafluoroethylene (PTFE)
- Zurcon® Polyurethane (PUR)
- HiMod® High Modulus Plastic
- Orkot® Composite Bearings
Compliances
- FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 14241-1
- FDA, NSF 61, DIN EN 14241-1, DIN EN 549
- FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 549
- FDA, DIN EN 549
- FDA
- FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 549
- FDA, KTW, WRAS, W270
- FDA
- FDA, KTW, WRAS, W270
- FDA
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