TC - Standard shaft seal - Rotary seal

Materials

Metal cage - Spring

The table below shows the materials that we can offer for metal cages and springs.

You can find more information on our web, so please take a look.

Application Material Standard Characteristics Metal cage Non-alloy standard steel AISI
(DIN ) Cold rolled steel Metal cage Nickel chrome steel AISI 304
(DIN 1. - V2A) Standard stainless steel Metal cage and spring Chrome-nickel-molybdenum steel AISI 316
(DIN 1. - V4A) Stainless steel highly resistant to corrosion Spring Steel for springs AISI -
DIN Cold drawn carbon steel wire Spring Nickel chrome steel AISI 302
(DIN 1.) Stainless steel for springs with a high carbon content

Rubbers

ACM (Polyacrylate)

Polymers containing ethyl acrylate (or butyl acrylate) have a small amount of monomer, which is necessary for cross-linking; ACM is a material with better heat resistance than NBR. It is often used for automatic gearboxes.

Chemical resistance Mineral oils (motor oils, gear box oils, ATF oils)
Atmospheric and ozone agents Compatibility issue Glycol-based brake fluids (Dot 3 & 4)
Aromatic and chlorinated hydrocarbons
Water and steam
Acids, alkalis and amines Temperature range -25°C to + 150°C (short-term peak at +160°C)
-35°C / +150°C with particular ACMs

AEM (ethylene acrylate rubber)

As a methyl acrylate and ethylene copolymer, AEM is considered to be more resistant to heat than ACM. Its characteristics make it an intermediary between ACM and FKM.

Chemical resistance Cooling fluids
Aggressive mineral oils
Atmospheric agents
Water Compatibility issue Aromatic solvents
Strong acids
Brake fluids
Gearbox oils
ATF oils Temperature range - 40°C to + 150°C

CR (Polychloroprene)

This CR-based rubber is used in the refrigeration industry and for ventilation systems. This chloroprene was the first synthetic rubber to be developed and marketed.

Chemical resistance Paraffinic mineral oils
Silicone oils and greases
Water and water-based solvents for use at low temperatures
Refrigerant fluids
Ammoniac
Carbon dioxide
Atmospheric and ozone agents Limited chemical resistance Naphthenic mineral oils
Aliphatic hydrocarbons (propane, butane, petroleum)
Glycol-based brake fluids Compatibility issue Aromatic hydrocarbons (benzene)
Chlorinated hydrocarbons (trichlorethylene)
Polar solvents (ketone, acetone, acetic acid, ethylene-ester) Temperature range -40°C / +100°C (short-term peak at +120°C)

EPDM (Ethylene Propylene Diene Monomer rubber)

As an Ethylene Propylene Diene Monomer copolymer, EPDM is commonly used for hot water taps, cooling systems, brake systems, dishwashers and washing machines.

Chemical resistance Hot water and steam up to +150°C
Glycol-based brake fluids (Dot 3 & 4) and silicone-based brake fluids (Dot 5)
Organic and inorganic acids
Cleaning agents, sodium and potassium alkalis
Hydraulic fluids (HFD-R)
Silicone oils and greases
Polar solvents (alcohols, ketones and esters)
Atmospheric and ozone agents Compatibility issue Mineral oils and greases
Hydrocarbons
Low impermeability to gas Temperature range -45°C / +150°C (short-term peak at +175°C)

FFKM (perfluorinated rubber)

FFKM has the best characteristics for resistance to high temperatures, with an excellent chemical inertia. This FKM-based rubber is very often used for high-temperature hydraulic and pneumatic systems, industrial valves, injection/fuel systems, motor seals and high-vacuum systems.

Chemical resistance Aliphatic and aromatic hydrocarbons
Polar solvents (ketones, esters and ethers)
Organic and inorganic acids
Water and steam
High-vacuum system Compatibility issue Coolants (R11, R12, R13, R113, R114, etc.)
PFPE Temperature range -15°C/+320°C

FKM (fluorinated rubber)

Depending on their structure and fluorine content, the chemical resistance and resistance to the cold in fluororubbers can vary. This FKM-based rubber is very often used for high-temperature hydraulics and pneumatics, for industrial valves, injection/fuel systems, motor seals and high-vacuum systems.

Chemical resistance Mineral oils and greases, ASTM n°1, IRM 902 and IRM 903 oils.
Fire-resistant liquids (HFD)
Silicone oils and greases
Mineral and vegetable oils and greases
Aliphatic hydrocarbons (propane, butane, petroleum)
Aromatic hydrocarbons (benzene, toluene)
Chlorinated hydrocarbons (trichlorethylene)
Fuel (including high alcohol content)
Atmospheric and ozone agents Compatibility issue Glycol-based brake fluids
Ammonia gas
Organic acids with a low molecular weight (formic and acetic acids) Temperature range -20°C / +200°C (short-term peak at +230°C)
-40°C / +200°C with particular FKMs

FVMQ (fluorosilicone rubber)

The FVMQ has mechanical and physical properties that are very similar to those of the VMQ. However, the FVMQ offers better resistance to fuels and mineral oils. However, resistance to hot air is not as good as that of the VMQ.

Chemical resistance Aromatic mineral oils (IRM 903 oil)
Fuels
Aromatic hydrocarbons with low molecular weights
(benzene, toluene) Temperature range -70°C/+175°C

HNBR (Hydrogenated Nitrile Butadiene Rubber)

This HNBR-based rubber is obtained through selective hydrogenation of the NBR's butadiene groups. It is commonly used for power-assisted steering and for air conditioning.

Chemical resistance Aliphatic hydrocarbons
Mineral and vegetable oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Diluted acids, saline solutions and bases for operation at an average temperature
Water and steam up to +150°C
Atmospheric and ozone agents Compatibility issue Chlorinated hydrocarbons
Polar solvents (ketones, esters and ethers)
Strong acids Temperature range -30°C / +150°C (short-term peak at +160°C)
-40°C / +150°C with particular HNBRs

NBR (Nitrile Butadiene Rubber)

Nitrile rubber (NBR) is the general term for acrylonitrile-butadiene copolymer. The ACN content can vary between 18% and 50%. While the acrylonitrile content is important, the resistance to oil and fuel is more so. Conversely, the elasticity and compression set are not as good. The NBR has good mechanical properties and good wear resistance. However, its resistance to atmospheric agents and the ozone is relatively low.

Chemical resistance Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel)
Mineral oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Diluted acids, low-temperature alkaline and saline solutions
Water (up to +100°C max) Compatibility issue Fuels with high aromatic content
Aromatic hydrocarbons (benzene)
Chlorinated hydrocarbons (trichlorethylene)
Polar solvents (ketone, acetone, acetic acid, ethylene-ester)
Strong acids
Glycol-based brake fluids
Atmospheric and ozone agents Temperature range -30°C / +100°C (short-term peak at +120°C)
-40°C / +100°C with particular NBRs

VMQ (silicone rubber: methyl vinyl polysiloxane)

This FVMQ-based rubber is very often used in fuel systems.

Chemical resistance Animal and vegetable oils and greases
Water for operation at an average temperature
Diluted saline solutions
Atmospheric and ozone agents Compatibility issue Superheated steam up to +120°C
Chlorinated hydrocarbons with a low molecular weight (trichlorethylene)
Aromatic hydrocarbons (benzene, toluene) Temperature range -60°C / +200°C (short-term peak at +230°C)

The table below gives an overview of the physical, chemical and mechanical characteristics for each of the materials.

Characteristics/Materials ACM AEM CR EPDM FFKM FKM FVMQ HNBR NBR VMQ Abrasion resistant 2 3 2 2 4 2 4 2 2 4 Resistance to acids 4 3 2 2 1 1 3 1 3 3 Chemical resistance 4 2 2 1 1 1 1 2 2 2 Resistance to cold 4 2 2 2 3 4 2 2 2 2 Dynamic properties 3 3 3 2 3 2 4 1 2 4 Electrical properties 3 3 3 2 1 4 1 3 3 1 Flame resistant 4 4 2 4 1 1 2 4 4 3 Heat resistant 1 1 2 2 1 1 1 1 2 1 Sealing water 1 1 2 2 2 2 4 2 2 4 Oil resistant 1 3 2 4 1 1 2 1 1 2 Ozone resistant 1 1 2 1 1 1 1 2 4 1 Tearing resistant 2 3 3 1 4 3 4 2 2 4 Traction resistant 3 2 2 1 2 1 3 1 2 4 Water/vapour resistant 4 4 3 1 2 3 3 1 2 3 Resistance to atmospheric agents 1 1 1 1 1 1 1 2 3 1

1. Excellent properties 2. Good properties 3. Average properties 4. Poor properties

Chemical compatibility

A &quotChemical compatibility guide&quot catalogue can be downloaded from the Documentation section. You can also use our online &quotChemical compatibility&quot tool free of charge.

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These two tools give you the option of measuring the behaviour of our materials that come into contact with the majority of existing fluids. The data displayed is the result of rigorous testing of the ambient temperature and in consultation with previous publications. Test results are not fully representative due to the specific features of your application. The tests performed actually do not consider additives and impurities that may exist under the actual conditions of use, nor the potential elevation of temperatures. Other parameters can also alter the behaviour of our materials, such as the hardness, persistence, abrasion, etc. We therefore recommend performing your own tests to verify the compatibility of our materials according to your specific application. Our technical team can provide you with any additional information.

The TC profile is an anti-pollution shaft seal made up of a single metal cage with a rubber coating, a main sealing lip with an integrated spring, and a second sealing lip.For the retention or exclusion of fluids on rotating shafts in a variety of applications, rotary shaft lip seals are frequently utilized.

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Most industries employ oil seals primarily to keep grease in a particular case or housing. These are efficient ways to fill a gap between stationary and moving parts of various machines and mechanical devices. This kind of barrier effectively shields machinery from dangerous impurities and dirt while preventing lubricant escape.

These dynamic seals are the most widely used for low pressure lubricants and high speed rotating shafts. When a bearing is used to support a rotating shaft, oil seals are utilized to keep lubricating fluids in the system and to keep contaminants out. Rubber elastomer that is attached to a metal case or container and helps maintain the lip against the shaft utilizing its garter spring gives these durability.These are often put next to a bearing that seals various gases, liquids, or solids that a particular mechanism encounters in or out. Oil seals are also available in split types for simple installation and effective downtime reduction by preventing machinery disassembly. These come in single or double lip varieties and are suggested for horizontal shafts.

The TC Oil Seal is a garter spring-equipped dual-lip radial seal that operates at low pressure to defend against impurities. The OD's ability to seal is enhanced by the rubber coating. The steel case's inside face is partially coated in rubber. The secondary sealing lip is shielded from contamination and dust by the additional dust lip. You can use this seal in contaminated settings. An appropriate lubricant should be used between the two sealing lips in order to maximize performance over the seal's lifetime.

In mechanical equipment, oil seals, also known as grease, fluid, or dirt seals, seal gaps between fixed and moving parts to assist stop lubricant evaporation. Additionally, they prevent dangerous impurities from entering machinery, especially in harsh conditions. Oil seals are essential parts of almost every sort of operating machine or vehicle and guard all varieties of carefully designed, snugly fitting ball, sleeve, and roller bearings.

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