STANDARD
INNSEALS offers seals made of high-quality elastomer (rubber) materials as well as a wide variety of plastic qualities.
ELASTOMERS
ACM is mainly used in the automotive sector as the material is resistant to engines, transmission and ATF oils even at higher temperatures. The temperature range is -20°C to +150°C.
Like ACM, AEM is often used in the automotive sector. AEM is more cold and heat resistant than ACM and can be classified between ACM and FKM due to its overall properties. Good resistance in additive mineral oils, water and coolants. AEM has good weather and ozone resistance. The temperature range is -30°C to +150°C (short term +175°).
Chloroprenes have good ozone, weather and aging resistance as well as good mechanical properties. They show medium resistance in mineral oils and are suitable for use in many refrigerants. The temperature limits are -40°C to +100°C.
EPDM materials generally show good resistance to hot water, steam, aging and chemicals as well as a wide range of thermal applications. They are divided into sulfur- and peroxide-crosslinked types, with the peroxide mixtures being more thermally resilient and showing a significantly lower compression set. EPDM has good resistance to hot water and steam, detergents, caustic soda and potassium hydroxide solutions, silicone oils and greases, many polar solvents, many diluted acids and chemicals. Special qualities are recommended for glycol-based brake fluids. EPDM materials are absolutely incompatible with any mineral oil products (lubricants, fuels). The temperature limits are -45°C to +130°C (-50°C to +150°C peroxide-cured).
Perfluoroelastomers have chemical and heat resistance comparable to PTFE. They combine these positive properties of PTFE with the elastic behavior of FKM. Due to the significantly higher price level of this material group, perfluoroelastomers are only used when other materials can no longer meet the requirements and safety aspects justify the higher costs.
Typical areas of application for perfluoroelastomers include the chemical, petroleum and semiconductor industries, high vacuum technology, and aerospace.
FKM materials are characterized by their very high temperature and chemical resistance. Also worth mentioning are the very good aging and ozone resistance, the very low gas permeability (good suitability for vacuum applications) and the self-extinguishing fire behavior.
The FKM standard material shows very good resistance properties in mineral oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, fuels, flame-retardant hydraulic fluids HFD and many organic solvents and chemicals.
In addition to the standard FKM materials, various special mixtures are available that are tailored to specific applications through different compositions of the polymer chains and varying fluorine contents (65% to 71%). FKM is generally not resistant to hot water, steam, polar solvents, glycol-based brake fluids and low-molecular organic acids.
Fluorosilicone elastomers have similar mechanical properties to silicone and are much more resistant to oils and fuels. The thermal application range is somewhat limited compared to silicone. The temperature limits are -55°C to +175°C.
HNBR is obtained by fully or partially hydrogenating NBR. This significantly improves heat, ozone and aging resistance and achieves very good mechanical properties such as good wear resistance. The media resistance properties are comparable to those of NBR. HNBR has good resistance to some refrigerants. The temperature limits are -30°C to +150°C.
NBR is the most commonly used material because of its good mechanical properties and resistance to mineral oil-based lubricating oils and greases. Good resistance to fuels is usually only achieved with special mixtures. Its properties are essentially determined by the acrylonitrile content (ACN between 18% and 50%). A low ACN content results in good low-temperature flexibility but limited resistance to oils and fuels; As ACN content increases, cold flexibility decreases and oil and fuel resistance increases. The NBR standard material has a medium ACN content in order to cover a wide range of applications with balanced properties. It shows good mechanical-technological values, e.g. high abrasion resistance and good resistance to mineral oil-based lubricating oils and greases, hydraulic oils H, H-L, H-LP, flame-retardant pressure fluids HFA, HFB, HFC, aliphatic hydrocarbons, silicone oils and greases, water up to approx .+80°C. However, NBR is not stable in aromatic and chlorinated hydrocarbons, fuels with a high aromatic content, polar solvents, glycol-based brake fluids and flame-retardant pressure fluids HFD.
The ozone, weather and aging resistance is low. However, in the majority of applications, e.g. when the material is wetted with oil, this does not have a disadvantageous effect.
Natural rubber is still obtained from the latex of certain plants. Vulcanizates made from natural rubber show good cold behavior, good mechanical properties and high elasticity. NR vulcanizates are resistant to water, glycols, alcohols, glycol-based brake fluids, silicone oils and greases as well as diluted, weak acids and bases. The temperature range is approx. -50°C to +80°C.
SBR is used in glycol-based brake fluids, water, alcohols, glycols, silicone oils and greases. The temperature range is -50°C to +100°C.
Silicone rubbers are particularly characterized by their large thermal application range and excellent ozone, weather and aging resistance. The mechanical properties of silicone are rather low compared to other elastomers. In general, silicone materials are physiologically harmless, i.e. they are used in food-related and medical areas, among other things. The silicone standard material can be used in the temperature range from -55°C to +200°C and is resistant to water (up to 100°C), Aliphatic engine and gear oils, animal and vegetable oils and fats. Silicone is generally not resistant to fuels, aromatic mineral oils, water vapor (possible for short periods up to 120°C), silicone oils and greases, acids and alkalis.
TPU materials stand out from classic elastomers due to their significantly higher mechanical strength. Other excellent material properties include high abrasion, wear and extrusion resistance, high compressive strength and high tear and tear resistance. The TPU material shows good flexibility (even in the upper hardness range) in the temperature range from -40°C to +100°C and very good aging and ozone resistance. TPU can be used well in mineral oils and greases, hydraulic oils H, HL, HLP, silicone oils and greases, flame-retardant hydraulic fluids HFA and HFB and water up to 50°C as well as pure aliphatic hydrocarbons.
PLASTICS
Polyurethanes stand out from classic elastomers due to their significantly higher mechanical strength. These include, among other things, high abrasion, wear and extrusion resistance as well as high tear and tear resistance. The material is resistant to aging and ozone and can be used in mineral oils and greases, silicone oils and greases, flame-retardant hydraulic fluids HFA and HFB and water up to max. 50°C and pure aliphatic hydrocarbons.
is a semi-crystalline, thermoplastic with high strength and rigidity. The polymer has good sliding properties and wear resistance as well as a low
moisture absorption. The good dimensional stability and particularly good fatigue resistance as well as the excellent machinability make POM versatile
usable construction material even for complex components. A distinction is made between homopolymers (POM-H) and copolymers (POM-C). Due to their higher crystallinity, the homopolymers have a slightly higher density, hardness and strength. The copolymers
on the other hand, they have higher impact strength, greater abrasion resistance and better thermal and chemical resistance.
Characteristics:
° high strength, rigidity and hardness
° good impact strength even at low temperatures
° low moisture absorption (at saturation 0.8%)
° good creep resistance
° very easy to machine
° high dimensional stability
° Hydrolysis-resistant (up to ~60 °C)
° wear-resistant
° very good resilience
Applications:
° Mechanical engineering
° Precision engineering
° Food technology
° Medical technology
° Bearings and rollers
° dimensionally stable precision parts
are semi-crystalline, thermoplastic materials. Polyamides have very good mechanical properties, particularly high toughness and excellent sliding and wear behavior. The properties vary from hard and tough PA 66 to soft and flexible PA 12. Depending on the type, polyamides take on different amounts
Moisture, which affects the mechanical properties and dimensional accuracy. When producing semi-finished products, a distinction is made between extrusion and casting processes. In the casting process, polyamide semi-finished products can be made with larger
Dimensions and a higher degree of crystallinization (mechanical strength) are manufactured, which also contain less internal stresses. The extrusion process, on the other hand, enables more cost-effective production.
Characteristics:
° medium to high strength, hardness, toughness, rigidity,
° a high mechanical damping capacity
° good fatigue resistance
° very good sealing strength
° good sliding properties
° usually high moisture absorption
° usually low dimensional stability
Applications:
° Mechanical engineering
° Transport and conveyor technology
° Packaging and paper machines
° Electrical engineering
° Gears
° Plain bearings
° Castors
is a partially crystallized fluoroplastic with an exceptionally high chemical and thermal resistance (-200 °C to +260 °C, briefly up to 300 °C).
In addition, the thermoplastic material has excellent properties
Gliding properties, an anti-adhesive surface and the best insulation properties. However, this is offset by low mechanical strength and a high specific weight compared to other plastics. To improve the mechanical properties, PTFE can be provided with fillers such as glass fiber, carbon or bronze.
Characteristics:
° extremely good chemical resistance
° very good temperature resistance
° sehr geringer Reibungskoeffizient
° extremely low surface tension
° difficult to glue
° high thermal expansion
° relatively low strength and rigidity
° low dielectric constant
° non-flammable
° physiological harmlessness
Applications:
° Chemical plant construction
° Transport and conveyor technology
° Medical technology
° Food technology
° Mechanical engineering
° Seals/Gaskets
° Linings
° Guide rails
° Conveyor belts
is a semi-crystalline, thermoplastic with high toughness and very good chemical resistance, compared to other plastics, lower mechanical resistance
Strength and temperature resistance. The individual polyethylenes are differentiated by their molar masses (molecular weight), which determine their respective physical properties.
Polyethylenes are mainly divided into high-density polyethylene PE 300 (PE-HD), high-molecular-weight polyethylene PE 500 (PE-HMW) and ultra-high-molecular-weight polyethylene PE 1000
(PE-UHMW) As the molecular weight increases, toughness, abrasion resistance, chemical resistance, machinability and the temperature range increase.
Characteristics:
° low density
° high toughness even in the low temperature range
° good wear resistance
° very low water absorption
° excellent chemical resistance
° high corrosion resistance
° anti-adhesive
° very good electrical insulator
° high vibration damping
° soft surface
° long service life
° physiologically harmless
° black version permanently UV-resistant
° difficult to glue
Applications:
° Chemical apparatus and container construction
° General mechanical engineering, especially conveyor and drive technology
° Food industry
° Seals/Gaskets
° Packaging and beverage industry
° Assembly and automation technology
PP-H
Polypropylene homopolymer (PP-H) is a thermoplastic that has high strength, rigidity and chemical resistance. The properties are similar to polyethylene, but it is slightly harder and more heat-resistant.
Colors: natural and gray
Characteristics:
° low density
° very low water absorption
° excellent chemical resistance
° high corrosion resistance
° high heat resistance
° Relatively high surface hardness
° very good electrical insulator
° low oxidation resistance
° low abrasion resistance
° sensitive to cold
° not weatherproof
° physiologically harmless
° difficult to glue
° easy to weld
Applications:
° Chemical apparatus and container construction
° Bio and pharmaceutical industries
° Punching pads
° Pump and valve parts
° Medical technology
PVC-U
Polyvinyl chloride (hard PVC) is an amorphous, thermoplastic material, without plasticizers, that has high hardness, strength and rigidity. The material offers an excellent combination of chemical resistance and mechanical strength, making it a cost-effective solution for many industrial applications.
Colors: similar to gray RAL 7011, black, white, red and light gray similar RAL 7035
Characteristics:
° high hardness, strength and rigidity
° high hardness, strength and rigidity
° very good electrical insulator
° normal impact strength
° easy to machine
° low water absorption
° easy to glue and paint
° easy to weld
° easily thermoformable
° low toughness
° partially weatherproof
° flame retardant
Applications:
° Chemical apparatus and container construction
° Bio and pharmaceutical industries
° Ventilation and fan construction
° Electrical and electronics industry
° Machines and equipment covers
° Pump and valve parts
Polycarbonate (PC) is an amorphous, thermoplastic material from the polyester family. Due to the low degree of crystallinization, PC has a high level of transparency. This
material is characterized by high strength, rigidity and hardness. PC is also very impact-resistant and has a high heat resistance.
A distinction is made between optical and industrial quality. The optical quality is a polished polycarbonate that is highly transparent.
The industrial quality is a colorless cloudy unpolished semi-finished product. However, after machining it can also be polished to achieve greater transparency.
Characteristics:
° very high impact strength
° high strength and rigidity
° good heat resistance
° good electrical insulation properties
° easy to machine
° high dimensional stability
° sensitive to stress cracks
° sensitive to notches
° easy to glue
Applications:
° Mechanical engineering
° Medical technology
° Electrical engineering
° Precision engineering
° Safety glass
Polystyrene (HIPS) is an amorphous thermoplastic that has been modified with rubber to achieve improved impact strength. Polystyrene is easy to
edit, print well and bond excellently.
Characteristics:
° outstanding surface quality
° excellent impact strength at low temperatures
° suitable for thermoforming
° flat surface
° excellent printability
° excellent electrical insulation properties
° Food suitability
Applications:
° Signs of all kinds and deep-drawn parts
° Screen printing
° Advertising
Acrylonitrile-butadiene-styrene copolymer (ABS) is an amorphous, thermoplastic that has high impact strength even at low temperatures. It is hard, scratch-resistant and has good dimensional stability.
Characteristics:
° high toughness
° high rigidity
° electrically insulating
° good chemical resistance
° good cushioning
° low moisture absorption
° easy to glue
Applications:
° Electrical engineering
° Automotive industry and mechanical engineering
° Precision engineering
° Panels
° Covers
is a semi-crystalline, thermoplastic material with high hardness, stiffness and strength with excellent sliding behavior and low sliding wear. Due to its good creep resistance, low moisture absorption and excellent dimensional stability, PET is ideal for use in complex parts with the highest demands on dimensional accuracy and surface quality.
Colors: white and black (improved UV resistance)
Characteristics:
° high strength
° high rigidity and hardness
° very low moisture absorption
° very low tendency to creep
° very high dimensional stability
° very easy to machine
° low sliding friction and sliding wear
° Hydrolysis-resistant (up to +70 °C)
° physiological harmlessness
° not suitable for contact with media with an alcohol content of > 50%
° easy to glue
Applications:
° Mechanical engineering
° Automotive industry
° Precision engineering
° Food technology
° Transport and conveyor technology
° Heavily loaded bearings
° dimensionally stable precision parts
is an opaque, semi-crystalline, thermoplastic fluoroplastic. PVDF is characterized by excellent chemical resistance, but without sharing the disadvantages of other fluoroplastics such as low mechanical values or difficult machinability.
Characteristics:
° low density compared to other fluoroplastics
° good mechanical strength compared to other fluoroplastics
° high continuous use temperature (140 °C) and practically no water absorption
° good dimensional stability
° good dimensional stability
° good hydrolysis resistance
° weatherproof
° radiation resistant
° good electrical insulator
° high abrasion resistance
Applications:
° Chemical plant construction
° Transport and conveyor technology
° Medical technology
° Food technology
° Mechanical engineering
° Electrical engineering
° Solar systems
is a semi-crystalline, thermoplastic. It shows excellent sliding properties combined with very good mechanical properties even under thermal stress. The excellent chemical resistance and high continuous use temperature round off the profile and make PEEK an almost universally applicable material for heavily loaded parts.
Characteristics:
° high continuous use temperature (260°C)
° high mechanical strength
° high rigidity
° high creep resistance even at high temperatures
° good gliding properties
° high wear resistance
° high dimensional stability
° excellent chemical resistance
° hydrolysis resistant
° good electrical insulator
° radiation resistant
Applications:
° Chemical engineering
° Mechanical engineering
° Electrical engineering
° Aerospace engineering
° Automotive industry
° Food technology
° Semiconductor technology
° Vacuum technology
° High temperature insulators
° Pump parts
° Valve seats
° Plain bearings
° Bearing shells
° Gears
is a semi-crystalline, high-temperature-resistant thermoplastic. Due to its chemical structure, PPS is a very resistant polymer with very good mechanical strengths even in temperature ranges of over 200 °C.
In addition to low water absorption, PPS also has good dimensional stability and exhibits excellent electrical properties. In addition, PPS is very chemically resistant even at elevated temperatures.
Characteristics:
° high temperature resistance
° very good strength and rigidity
° low tendency to creep
° very abrasion resistant
° very good chemical resistance
° excellent electrical properties
° low water absorption
° sensitive to weather
is an amorphous, thermoplastic material with high mechanical strength and rigidity. Due to its properties, PEI is very close to polyarylsulfones. The material shows remarkably high creep resistance over a wide temperature range. In addition, PEI has a high continuous use temperature. The very good hydrolysis resistance and dimensional stability round off the property profile. Due to its amorphous molecular structure, PEI is transparent and has a golden yellow hue.
Characteristics:
° high continuous use temperature (170°C)
° high mechanical strength
° high rigidity
° high creep resistance over a wide temperature range
° high dimensional stability
° very good hydrolysis resistance (suitable for repeated steam sterilization)
° good electrical insulator
° good radiation resistance
Applications:
° Electronics
° Semiconductor technology
° Aerospace technology n Food technology
° Medical technology
° Automotive industry
° Vacuum technology
Other materials and special colors on request.
Resistance and other material data can be found in the material data sheets,
which can be requested from Innseals.