Shaft Seals

High-quality shaft seals from Corteco!

What to consider when choosing a seal? How to select the highest quality seals?

What are radial shaft seals?

Radial shaft seals are a key component of every drive system. A suitable high-quality seal is extremely important because it:

- prevents leaks of oil and other operating fluids,

- ensures system stability,

- is used in moving connections with high relative speeds.

The most commonly used solution is simmerrings (radial shaft seals). Our seals are available in many variants, so you can match them to any system.

Construction of seals

Simmerrings consist of:

- an external cylindrical surface made of elastomer or steel sheet (metal surface or reinforcement),

- a sealing lip – ensures tightness during motion and at rest,

- an additional spring – reinforces radial pressure.

Many models of seals also have a dust lip that protects against external contaminants. In our offer, you will also find popular types of seals.

Simmerrings – most common applications

Rotary shaft sealing rings, commonly known as simmerrings, are:

- the most popular type of rotary motion seals,

- available in many material variants: FPM (Viton), NBR, HNBR, silicone.

This is a suitable seal for various industrial applications.

Types of Sealing Materials – What Do the Colors Mean?

The color of seals (shaft seals, radial oil seals) usually reflects the material they are made of. The most common colors and corresponding materials are:

– Blue – NBR
– Brown – FPM (Viton), FKM
– Black – ACM

Note: The color does not always indicate the material definitively – for example, NBR seals may also appear in black.

Characteristics of Sealing Materials:

– NBR (nitrile butadiene rubber) – Very good resistance to low temperatures (down to -40°C). Widely used in industrial and automotive applications.

– FPM / Viton (fluoro rubber) – Excellent chemical and thermal resistance. Operating range up to +200°C (short-term up to 230°C). Ideal for applications involving oils and fuels.

– ACM (acrylic rubber) – Temperature resistance range: -25°C to +150°C. Good resistance to engine oils – commonly used in crankshaft seals.

– PTFE (Teflon) – One of the most resistant materials: temperature range from -200°C to +260°C. High chemical and mechanical resistance. Does not absorb water and is wear-resistant.

– VMQ / MVQ (silicone rubber) – Silicone-based elastomer used in demanding environments. Temperature range: -60°C to +200°C.

Trusted seal manufacturers

In our offer, you will find seals from renowned manufacturers, including:

- Corteco (Freudenberg group),

- www.e-simmering.pl – an online store with a wide selection.

You will also find a sealing ring used in various technical applications. Thanks to this, we can guarantee:

- reliability,

- durability,

- resistance to loads.

Our offer also includes Corteco seals in various sizes and specifications.

Types of shaft seals

The types of available simmerrings differ in construction and application. In our offer you will find, among others:

- directional – right-hand, left-hand, bidirectional or non-directional,

- DUO – with two springs, so-called double-sided,

- combi – seals designed to work in harsh conditions (dust, mud),

- cassette (cassette simmerrings) – so-called RWDR-KASSETTE, consisting of two parts, used in closed seals,

- for hydraulic cylinders – e.g. for Caterpillar, JCB machines.

Why trust us?

✅ We guarantee:

- top quality,

- over 7000 products available immediately, including a huge selection of seals,

- fast shipping (by 4 PM on each working day),

- the possibility of individual delivery or pickup arrangements.

If you’re looking for proven and durable solutions, the seals available in our offer will be an excellent choice. We offer high-quality seals, including Corteco seals, which are highly regarded on the market. Our offer includes both popular types of seals and specialist ones, tailored to various applications. All seals are available off the shelf. We will help you choose the right seal for a specific application, and our e-simmering store provides convenient access to the full range of products. Choose seals that guarantee reliability, quality, and availability – choose a Corteco seal from our offer and gain confidence in all conditions.