PFAS-Free* Solutions & Materials

With growing regulation over Per- and PolyFluoroAlkyl substances, a transition towards alternative materials has become critical to supply chain management throughout the industry. Omniseal Solutions partners with our customers and suppliers to find and develop advanced materials & components for critical applications anticipating key changes in our markets.

Due to their unmatched combination of physio-chemical properties, Fluoropolymers, a sub-family of PFAS, have been used by Omniseal Solutions for decades on numerous challenging applications in various Industries. However, other materials have been developed and used already over years across our different markets. The recent changes in the regulatory environment accelerated our efforts towards the research and development of alternative materials for our customers’ applications.

Our teams of engineers are very well known throughout the industry as technology leaders in sealing technology and beyond, through a strong material expertise, a high design creativity coupled with a wide range of application testing and material simulation capabilities. We have developed and continue to invest in diverse production capabilities that provide us with a versatile manufacturing infrastructure able to supply any high performance metal and plastics parts.

You can find more of those alternatives in the page below or contact us to know more and explore the alternatives with our engineers.

* PFAS-Free here means we do not intentionally add PFAS material in the product, but does not exclude the possibility of traces, as these materials are common in the environment.

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Metal C Seal External Face
Metal C Seal External Face

Omniseal®

Metal C-Seals

Metal face C-Seals help overcome both heat and pressure pulsating sealing challenges. The key to the seal's superior performance is the high springback characteristic due to the C-shaped construction. These highly resilient seals can be used for internal, external, and axial pressures under extreme conditions that preclude the use of gaskets made of organic materials. 


Used in
where very low leak rates are demanded
Temperature

-253°C to +1100°C (-423°F to +2000°F)

Pressure

high vacuum to 5,500 BAR (79770 PSI)

Clamping Load

Approximately 250 N/mm seal circumference

Metal-Spring-Energized-Face
Metal-Spring-Energized-Face

Omniseal®

Metal Spring-Energized Face Seals

This face seal is designed with a spring-energizer in a C-Seal jacket, which is a self-pressure, activated design to provide an effective metal-to-metal leak proof solution. The proper combination of the base materials and surface coatings make it possible to seal almost any fluid at extreme temperatures and pressures without deterioration of the seal over extended periods of time. 


Used in
highly demanding applications in leakage rate with high load available
Temperature

Cryogenic to +1100°C (+2012°F)

Pressure

Ultra high vacuum to 79,770 psi (5,500 bar)

Clamping Load

Between 70 to 800 N/mm

Omniseal® RACO® Spring-Energized Seal
Omniseal® RACO® Spring-Energized Seal

Omniseal®

RACO® Spring-Energized Seals

Polymer seals with an U-shaped spring design used in extreme face sealing conditions, including cryogenic fluids and high vacuum.


Used in
extreme face sealing conditions, including cryogenic fluids and high vacuum, as those seen in space
Temperature

-250°C to +200°C (-418°F to +662°F)

Pressure

UHV to 100 MPa

Max Speed

1 m/s

Clamping Load

2 N/mm

Metal-O-Ring-Face-Seal
Metal-O-Ring-Face-Seal

Omniseal®

Metal O-Rings

These metal face seals are long lasting seals and unlike non-metallic seals, they are not subject to failure due to incompatibility with the environment, outgassing, or deterioration from age.


Used in
areas where elastomers & other non-metallic seals will not seal properly or do not offer required reliability for the application (temperature, pressure, environment).
Temperature

-250°C to +1100°C

(-423°F to +2000°F)

Pressure

high vacuum to 25,000 psi (1723 bar)

Clamping Load

200-3700 lb/in (35-650 N/mm) or higher with spring-energized design

Metal-C-Seal-Axial
Metal-C-Seal-Axial

Omniseal®

Metal C-Seals Axial

Metal face C-Seals help overcome both heat and pressure pulsating sealing challenges. The key to the seal's superior performance is the high springback characteristic due to the C-shaped construction. These highly resilient seals can be used for internal, external, and axial pressures under extreme conditions that preclude the use of gaskets made of organic materials. 


Used in
where very low leak rates are demanded
Temperature

-253°C to +1100°C (-423°F to +2000°F)

Pressure

high vacuum to 5,500 bar (79,770 psi)

Clamping Load

Approximately 250 N/mm seal circumference

Metal-Lip-Seal-Axial
Metal-Lip-Seal-Axial

Omniseal®

Metal Lip Seals

The metal axial lip seal is a patented design for use in high and low pressure as well as high and low temperature dynamic applications. This sealing solution provides excellent performance in thermal expansion applications or limited rotational or reciprocating applications.


Used in
shaft sealing & bore sealing; further development of axial C-Seal
Temperature

-75°C to +730°C 

(-100°F to +1350°F)

Pressure

up to 35,000 psi (2413 bar) with supports

Machined-K-Metal-Seal
Machined-K-Metal-Seal

Omniseal®

Metal Machined Seals

Machined seals are excellent metal seal solutions for high pressure and high load environments but are different from formed metal seal solutions in that they do not require additional tooling to be manufactured, which saves our customers time and cost. In addition, with our flexible capabilities and expertise to understand your machined metal seal requests, we can provide you the best resistant metal seal solution - from aluminium to complex nickel alloys.


Used in
extreme environments related to high temperature, high pressure, load or corrosive media
Temperature

-250°C to +423°C (-1100°F to +2000°F)

Pressure

high vacuum to high pressure

Segmented-Shaped-Seals-Multi-Convolution
Segmented-Shaped-Seals-Multi-Convolution

Omniseal®

Metal Segmented & Shaped Seals

Our metal segmented seals include standard E-Seals, V-Seals and multi-convolution E-Seals. Size is a determining factor for number of segments needed; customers typically use two to eight segments but the seals can be customized to requirements. With seals that have large diameters such as those used in power generation applications (in shroud and turbine sections), when segmented, customers can reduce shipping costs. This design also allows our team to make higher deflection profiles. Many segmented seals use our proprietary NCCM coating to help with wear.


Used in
applications that need small radii or custom shapes
Aluminium-SES-Seal
Aluminium-SES-Seal

Omniseal®

Metal Aluminium Spring-Energized Seals

Our aluminium spring-energized seals are standard spring-energized C-Seals with an additional aluminium jacket and soft layer to guarantee the best possible leakage tightness for any kind of surface finish.


Used in
high pressure & zero leakage tolerance with high surface roughness or soft material flange
Temperature

-196°C to +250°C (-320°F to +482°F)

Pressure

vacuum to atm

Clamping Load

200 to 240 N/mm

Meldin® HT Thermoplastic Materials
Meldin® HT Thermoplastic Materials

Meldin® HT Thermoplastics

Diverse array of engineered Meldin® thermoplastics

Under the Meldin® brand, Omniseal Solutions offers the most complete range of high-performance solutions including one of the top thermoset polyimide materials and a diverse array of engineered thermoplastic products. Each series is designed with unique characteristics and has been proven for specialized applications in aerospace, electronics, and other industries where high thermal resistance and good mechanical properties at high temperatures are required.


Used in
high thermal resistance & good mechanical properties
Meldin® Polyimide Materials
Meldin® Polyimide Materials

Meldin® Polyimides

High Temperature Polymer Material Solutions

Meldin® polyimide material solutions exhibit high dimensional stability at high temperatures and longer life at higher loads and speeds. With Omniseal Solutions,  total control on the process from the powder to the parts is guaranteed. Solutions include bearings, wear components, piston rings, vanes, thrust washers, and of course seals. This is in addition to custom shapes, rods, sheets, and tubes. These solutions are found in a multitude of industries such as aviation, industrial, semi-conductor, space, and life science.


Used in
where high thermal resistance and good mechanical properties are required
Hycomp™ Composites Group
Hycomp™ Composites Group

Hycomp Composites

Engineered Polyimide-Based Composite Materials

Hycomp™ composite materials are made from high temperature thermoset polymers and long carbon or glass fibers for applications requiring high temperature resistance, high mechanical strength and superior wear resistance.


Used in
when high temperature / wear resistance or high mechanical strength is needed 
Meldin® 4000 PAI-Based Group
Meldin® 4000 PAI-Based Group

Meldin® HT Thermoplastics

4000 PAI Based

Meldin® 4000 is Omniseal Solutions material line of PAI (polyamide-imide) based compounds. The different numbers within the series refer to the unique composition and different properties of the various compounds. 

Meldin® 4000 grades are manufactured by injection molding that can meet tight tolerances. There is also a limited number of shapes available for prototyping activities.


Used in
wear resistant in harsh conditions, chemically compatible with all automotive fluids
Temperature

-200°C to +290°C

Manufacturing Process
Hot compression molding
Injection molding
Mechanical Strength

70 MPa

Meldin® 5000 PEEK Based Piston Ring
Meldin® 5000 PEEK Based Piston Ring

Meldin® HT Thermoplastics

5000 PEEK Based

Components made with the Meldin® 5000 series (PAEK and PEEK-based material formulations) have several advantages over metals, machined ceramics, and other costly machined materials, with the ease and convenience of thermoplastics. Having a high tensile, compressive and flexural strength, Meldin® 5000 materials are injection molded into tight-tolerance finished components in single or complex designs that can exhibit metal-like finishes without expensive machining or secondary operations, and with the advantages of being lighter and corrosion-resistant.


Used in
used where high load and chemical resistance are needed.
Temperature

-100°C to +260°C

Manufacturing Process
Compression molding
Injection molding
Mechanical Strength

50 MPa

Meldin® 1000 Group
Meldin® 1000 Group

Meldin® HT Thermoplastics

1000 PPS Based

Meldin® 1000 series is an Omniseal Solutions material line based on polyphenylene sulfide (PPS) thermoplastic compounds. Components made from the Meldin® series materials exhibit excellent chemical and thermal resistance, have good dimensional stability, and maintain structural integrity, proving design versatility. This stability stems naturally from the low coefficients of thermal expansion of the series. The dimensional stability is particularly apparent in components functioning in close-clearance applications.


Used in
Thermoplastic economical polymer material solution BEST for strength and rigidity.
Temperature

-50°C to +200°C 

Manufacturing Process
Hot compression molding
Injection molding
Mechanical Strength

35 MPa