Sealing

We are leaders in sealing products: any seal, any material

At OSN we are leaders in sealing solutions, committed to quality and innovation in all our products. We offer a wide range of solutions designed for various industrial applications, ensuring maximum efficiency and durability in each of them. In addition, our products are available in multiple materials and comply with various international certifications, guaranteeing their suitability for specific applications and demanding standards.

Oil seals

OSN oil seals are designed to prevent the leakage of lubricants and the ingress of contaminants into mechanical systems. They are essential in engines, transmissions and industrial machinery. Our oil seals stand out for their high wear resistance, excellent sealing capacity and availability in a variety of materials such as NBR, FKM, VMQ, ACM, EPDM, CR and PTFE. They can also comply with certifications such as FDA, NSF, WRAS or UL, among others, ensuring their suitability for applications in the food, pharmaceutical and other regulated industries. It is worth noting that we know all the existing types of oil seals and hold more than 260 different profiles in stock, among which we also find blind seals or end caps. We include a wide range of stainless steel springs for oil seals that are in contact with fluids that advise the use of this material.

O-rings

O-rings are circular rings with a round cross-section, used for sealing mainly in hydraulic and pneumatic applications but also in all kinds of processes. Their versatility, combined with materials that resist high temperatures and chemicals, makes them indispensable in numerous industries. OSN offers O-rings in multiple dimensions and materials such as NBR, FKM, FFKM, VMQ, EPDM, HNBR, CR, ACM, IIR, PU and PTFE. These seals can also comply with certifications such as FDA, NSF, WRAS or UL, and other international standards, guaranteeing their safety and effectiveness in critical applications. Finally, we complete our range with a wide selection of encapsulated O-rings, and we offer the option of immediate-delivery O-rings manufactured by vulcanised joining.

V-Rings

V-rings or V-seals are flexible axial seals that generally protect bearings from the ingress of dust and splashes. Commonly used in electric motors and pumps, these rings are easy to install and compatible with high speeds. They are available in materials such as NBR and FKM, but can also be manufactured in VMQ, CR or the material required by the customer. In addition, our range of dimensions (for shafts from 3 to 2000 mm) and types (VA, VS, VL, VE, VAX, and more) is the widest on the market and can comply with specific certifications according to the application requirements.

Axial seals

Axial seals perform the same function as V-rings but have a metal casing to increase rigidity and improve protection against dust. These seals are characterised by their high sealing capacity and friction resistance, and are available in NBR and FKM, as well as in other materials or according to custom designs to meet specific needs. In particular, our RE and RE-1 types ensure their effectiveness in various operating conditions and can comply with certifications such as FDA and UL, among others.

Quad-Rings

Also known as X-rings, quad-rings have an X-shape that improves sealing capacity compared to conventional O-rings. They are ideal for high-pressure systems and dynamic applications, meaning they reduce the risk of twisting and have a longer service life. Made from materials such as NBR or FKM, they can be customised in other elastomers, as well as obtain special certifications.

Static seals

OSN offers a wide range of static sealing solutions, adapting to various industrial needs. Our range includes flat gaskets, D-rings (DIN 11851), JR seals (DIN 3869) and clamp seals, guaranteeing a secure, efficient seal in every application. In addition, we have other seals for valves and fittings, providing versatile, high-quality solutions to ensure tightness in connections and hydraulic systems. Each of our products is designed to offer durability and optimal performance in demanding environments. Our static seals can be manufactured in a large number of materials and hold numerous certifications, especially for the food industry.

O-ring cord

O-ring cord is a thread-shaped sealing material that can be cut to measure to form custom O-rings. It is especially useful for on-site repairs and specific applications where a quick, economical solution is required. Available in a variety of materials such as NBR, VMQ, EPDM or FKM, OSN O-ring cord can comply with FDA and NSF certifications, offering flexibility and convenience in use. It is available by the metre or in plastic or cardboard reels. You can consult our range of customisable colours.

Extruded profiles

Manufactured by extruding elastomeric materials, OSN extruded profiles are used in doors, windows and industrial containers. These profiles can be customised according to the customer needs, providing excellent sealing against air and water, and they are durable and resistant to ageing.

Mirror seals

Mirror seals are designed specifically for rotary applications in extremely demanding environments, where they withstand severe wear and prevent the ingress of abrasive, aggressive external media. Mirror seals combine a seal lip and a sealing mirror to offer greater sealing effectiveness. Used mainly in heavy machinery, these seals reduce friction and wear, providing superior durability and a longer service life for the components.

Mechanical seals

Mechanical seals are essential devices in pumps and compressors, used to prevent fluid leaks. OSN offers highly reliable, safe mechanical seals, designed to withstand extreme conditions in industries such as chemical, petrochemical and food. Made from advanced materials such as silicon carbide, graphite and special elastomers, these seals comply with FDA, NSF and API certifications, ensuring their performance in critical applications.

Our wide sealing range is completed with caps for tapered bearings, square cord, quad-ring cord or nylon washers, among many other options to cover all our customers industrial needs. We therefore offer innovative, effective sealing solutions. In addition, the availability of multiple materials and international certifications ensures that our products are suitable for a wide range of applications and comply with the most demanding standards.

OSN supports you throughout the entire purchasing process. In addition to offering you a quote with the best price and delivery time, we also provide technical drawings and data sheets for any material you need. We offer all kinds of certifications and dimensional studies, as well as the different steps of a PPAP approval process. Our aim is to give you fast advice and technical support before and after the sale, to make sure you get exactly what you need, at the right time, because your time is our commitment.

In short, choosing OSN means opting for guaranteed-quality products, developed to the highest standards and backed by personalised technical support.

Do you have any questions? Contact us through this form.

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