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One-stop-shop for sealing solutions

Trelleborg Sealing Solutions offers everything from the versatile elastomer O-Ring to complex multi-faceted PTFE based and polyurethane geometries. Over the past 50 years Trelleborg has developed a portfolio of seals and bearings that can meet the most demanding industry-specific needs. Their range of products includes hydraulic seals, pneumatic seals, shaft seals, oil seals and other rotary seals, mechanical face seals / heavy duty seals, o-rings, aircraft seals and a broad variety of static seals.  In the unlikely event that none of these suit your requirements, Trelleborg can develop a specific product for your application.

Please click on a category below for additional information.  Feel free to contact us with any questions!

O-Rings|closed

O-Rings are used in a variety of fields: they are either used as sealing elements or as energizing elements for hydraulic slipper seals and wipers. Thus, the O-Ring is basically used in every field of industry including aerospace, automotive or general engineering.

Your advantagesToday, the O-Ring is the most widely used seal because of its inexpensive production methods and its ease of use. Trelleborg offers a range of elastomeric materials for both standard and special applications which allow the O-Ring to seal practically all liquid and gaseous media.

The perfect O-Ring for each purposeTrelleborg's O-Rings are both cost-effective and perform highly in almost every environment. No matter if you need metric or inch, standard or custom-made O-Rings – any size of O-Ring is available – including giant O-Rings using Trelleborg's Fleximold™ process. Their rubber O-Rings are made of EPDM, FKM, NBR, HNBR, as well as their proprietary FFKM, Isolast®. Special products apart from rubber O-Rings such as O Rings in PTFE based Turcon® material and Wills Rings® metal O-Rings  are also available.

Need help determining what O-ring you require?  Please contact us for assistance!

Hydraulic Piston Seals & Piston Rings

Piston Seals or Piston Rings are used in hydraulic cylinders for fluid sealing. They are internal to the cylinder head and seal against the cylinder bore, preventing fluid from flowing across the cylinder head. This allows pressure build up on one side of the piston, making the cylinder extend or retract.

Trelleborg Sealing Solutions offers a wide range of piston seals that provide the ultimate in leakage control. Their proprietary piston seal designs meet users’ requirements for low friction, compact form and simple installation.

A hydraulic piston seal or piston ring is usually manufactured in Trelleborg's Turcon® Polytetrafluoroethylene (PTFE) based material or Zurcon® polyurethane . Specially engineered for fluid power applications, these compounds provide exceptional resistance to wear and outstanding extrusion properties. Compatible with virtually all media, they demonstrate unrivalled performance at extremes of temperature.

Hydraulic Rod Seals

Rod seals are used in hydraulic cylinders for fluid sealing. They are external to the cylinder head and seal against the cylinder’s rod, preventing leakage of fluid from within the cylinder to the outside.

Trelleborg Sealing Solutions offers a wide range of hydraulic rod seals that provide the ultimate in protection from ingress of media. This includes O-Ring energized Polytetrafluoroethylene (PTFE) seals, polyurethane (PU) U-Cups, and many more. Trelleborg's proprietary rod seal designs meet users’ requirements for low friction, compact form and simple installation

A hydraulic rod seal is usually manufactured in our Turcon® PTFE based material or Zurcon® polyurethane . Specially engineered for fluid power applications, these compounds provide exceptional resistance to wear and outstanding extrusion properties. Options are available that are compatible with virtually all media, they demonstrate unrivalled temperature performance.

Hydraulic Scrapers/Wipers

Scrapers or Wipers are installed in the sealing configurations of hydraulic cylinders to scrape dirt, foreign particles, chips or moisture from the piston rods as they retract into the system. A hydraulic wiper or scraper prevents contamination of the hydraulic medium that could damage wear rings, seals and other components.

Trelleborg Sealing Solutions offers a wide range of hydraulic scrapers and wipers in metal, elastomer, Turcon® Polytetrafluoroethylene (PTFE) based material or Zurcon® polyurethane. These include the Turcon® Excluder®, which is the Trelleborg Sealing Solutions proprietary design of double-acting hydraulic scraper.

Specially engineered for hydraulic cylinder applications, Turcon® and Zurcon® materials demonstrate excellent low-friction properties providing exceptional resistance to wear.

Wear Rings & Guide Rings

Slydring® is the Trelleborg Sealing Solutions proprietary design of hydraulic wear ring or guide ring. The function of a hydraulic wear ring is to guide the piston and piston rod of a hydraulic cylinder, absorbing transverse forces. At the same time, it prevents metal-to-metal contact, optimizing the performance of the sealing system.

Slydring® hydraulic wear rings and guide rings are available in three different materials types all of which are wear-resistant and demonstrate outstanding friction properties. Turcite® is for low to medium duty applications where there are limited radial forces, HiMod® is for medium to heavy duty applications and Orkot® materials are for heavy duty applications where there are high radial forces

Mechanical Face Seals

Mechanical Face Seals or heavy duty seals are specifically engineered for rotating applications in extremely arduous environments where they withstand severe wear and prevent ingress of harsh and abrasive external media. A Mechanical Face Seal is also known as Heavy Duty Seal, Face Seal, Lifetime Seal, Floating Seal, Duo Cone Seal, Toric Seal , Mechanische Laufwerkdichtungen (German), Механични Челни Уплътнения (Bulgarian), 机械端面密封件 (Chinese), Mekaniske aksialtætninger (Danish), Mekaaninen otsatiiviste (Finnish), Joints d’Etanchéité Axiaux (French), Mechaniczne Uszczelnienie Czołowe (Polish), Juntas espejo (Spanish), Mekaniska Glidringstätningar (Swedish).

There are two different types of Mechanical Face Seals / Heavy Duty Seals:

  • Type DO is the most common form that uses an O-Ring as a secondary sealing element
  • Type DF has an elastomer with a diamond-shaped cross section as a secondary sealing element instead of the O-Ring
Both types consist of two identical metal seal rings mounted in two separate housings face-to-face on a lapped seal face. The metal rings are centered within their housings by an elastomer element. One half of the Mechanical Face Seal remains static in the housing, while the other half rotates with its counter face.

 
Mechanical Face Seal, Type DO

Mechanical Face Seal, Type DF



Applications

Mechanical Face Seals are predominantly used for sealing the bearings in construction machinery or production plants operating under extremely arduous conditions and subject to severe wear.

These include:

  • Tracked vehicles, such as excavators and bulldozers
  • Conveyor systems
  • Heavy trucks
  • Axles
  • Tunnel boring machines
  • Agriculture machines
  • Mining machines
Mechanical Face Seals are proven for use in gearboxes, mixers, stirrers, wind-driven power stations and other applications with similar conditions or where maintenance-free lifetime sealing is expected.

Pneumatic Seals

Trelleborg Sealing Solutions supplies a number of seals, wear rings and scrapers / wipers specifically engineered for pneumatic applications, where cylinders and valves are actuated by air. Pneumatic seals operate in dynamic applications, often at high speeds, generally with rotary or reciprocating motions. In addition, where a standard product type is not suitable, custom solutions can be developed.

Trelleborg's range of pneumatic seals includes:

Ppneumatic rod seals
Piston seals
Rod seal - scraper combinations
Static seals
Pneumatic scrapers
Wear rings and cushioning seals

Any Trelleborg pneumatic seal is manufactured in optimized materials including Zurcon® polyurethane and Turcon® Polytetrafluoroethylene (PTFE) based material . Zurcon® provides exceptional resistance to wear, abrasion and tearing. It also demonstrates outstanding durability, high breaking elongation and excellent elasticity. Turcon® has the advantage of no stick-slip, excellent friction characteristics and high resistance to wear.

Rotary & Shaft Seals

Rotary and Shaft Seals are used in components with oscillating or rotating parts to keep lubrication fluids in while preventing ingress of mud and water. Trelleborg seals help improve components life and long term performance.

Trelleborg's portfolio of rotary seals includes the commonly known radial oil seal, rotary shaft seals, radial and axial lip seals, double-acting O-Ring energized Polytetrafluoroethylene (PTFE) rotary seals for shaft and bore, rubber V-Rings, mechanical face seals / heavy duty seals and many more.
Extending component life
Our specialized Rotary and Shaft Seals perform exceptionally well in many different rotary situations. They demonstrate superior low-friction properties and provide excellent resistance to wear.
Rotary and Shaft Seals for many different applications

With special seals, like the Radial Oil Seal without a tension ring, the range of applications goes beyond fluid sealing. This special form of Rotary Shaft Seals can also serve as a scraper in situations with helical movement.

Trelleborg Sealing Solutions offers a wide range of specialized Rotary Shaft Seals, including their best-in-class proprietary radial lip seal, Turcon® Varilip® PDR and high quality radial oil seals .

Static Seals

In a static sealing application there is no movement between sealing surfaces or between the seal surface and its mating surface.

The most common seal used in static sealing situations is the O-Ring , but in addition to these, Trelleborg Sealing Solutions offers a range of specialized static seals. The range includes our proprietary metal O-Rings, Wills Rings® , which are ideal for use in extreme temperatures and pressures. Other static seals offered include inflatable seals (Airseal), various rubber seals, valve seals, x-rings, square rings, rubber - metal bonded seals, polyurethane seals and spring energized Polytetrafluoroethylene (PTFE) seals.

Resistant to virtually all media, static seals in Trelleborg's Turcon® PTFE based material are offered for contact with aggressive chemicals. In addition, there is the inflatable Airseal, suitable for sealing doors and openings especially in chemical or semiconductor applications.

Custom Designed Seals, Gaskets, & Diaphragms

The wide range of sealing products offered by Trelleborg Sealing Solutions can usually satisfy even the most demanding of application requirements. In some cases, though, a custom-designed component is the best sealing solution.

We frequently work with customers’ engineering teams to develop the optimum design for their applications in Trelleborg's advanced elastomer, thermoplastic or composite sealing materials.

A large number of customers globally are supplied with custom-made rubber diaphragms. Technically challenging applications are solved with composite materials including the application of Polytetrafluoroethylene (PTFE) and other barrier materials for gaskets to be used in chemically aggressive environments. Innovative plastic or metal-to-rubber bonding technology can result in simplified parts and reduced assembly.

Bearings & Bushings

Trelleborg Sealing Solutions offers composite bearings and thermoplastic bearings for a wide range of applications. Bearings are fitted within an application to allow constrained relative motion between two or more parts. They are mechanical devices that support another part and/or reduce friction.

Polymer bearings, such as our Orkot®, Turcite® and HiMod® products, offer significant advantages over traditional metal bearings. All are dimensionally stable, have excellent wear resistance and outstanding low-friction characteristics, giving them unrivalled performance in dry or with boundary lubrication.

Trelleborg's range of bearing materials includes Turcite® and HiMod® engineered thermoplastic bearings and Orkot® synthetic composite bearings.

Orkot® composite bearings have virtually no swell in seawater, making them ideal for marine and hydropower applications. Their superior elasticity over metal bearings means they can take edge-loading and counter misalignment even under extremely heavy loads.

Flat Gaskets

HiMod® FlatSeal™

Trelleborg Sealing Solutions introduces HiMod® FlatSeal™, a range of best-in-class flat gaskets.
himod flatseal

The new range consists of seven products that will satisfy the requirements of the majority of applications within aerospace, chemical and processing industries.

Details of gaskets in the HiMod® FlatSeal™ range:

HiMod® FlatSeal™10 – A good all rounder- Suitable for a broad variety of standard applications, this gasket is ideal for use in average temperatures and pressures.

HiMod® FlatSeal™15 – Ideal for steam, oils, fuels and hydrocarbons- This gasket shows exceptionally good resistance to steam and fluids such as oils, fuels and hydrocarbons.

HiMod® FlatSeal™20 – Long-term resistance to high pressure- Providing high long-term pressure resistance, this gasket is also blowout resistant and complies with fugitive emissions standards.

HiMod® FlatSeal™34 – Metal insert for easier handling and strong performance- For universal use in a wide variety of general and chemical processing applications, the gaskets metal insert guarantees easy handling and a strong performance.

HiMod® FlatSeal™36 - Material profile ensures maximum safety- Made of expanded graphite with flat metal inserts, this gasket has the best pressure to temperature ratio of any gasket on the market.

HiMod® FlatSeal™43 and 45 – Superior performance in food applications- Suitable for food contact, the gaskets offer improved performance compared to conventional polytetrafluoroethylene (PTFE) flat gaskets.

Liquid Silicone Rubber (LSR)

Liquid silicone rubber is best suited to life science applications because it features matchless inertness and biocompatibility, which should be considered when factoring in potential bacteria growth and alleviating contamination.
Silicone rubber is compatible with human beings and its mechanical properties are highly suitable for dynamic applications where accuracy, consistency and longevity are required.trelleborg-medical-devices
Features and benefits:

Facilities:
• LSR Center of Excellence in Switzerland
• Global LSR manufacturing footprint in Europe, North America and China
• ISO 13485, ISO9001 and ISO 14001 certified
• Product design centers globally
• State-of-the-art cleanrooms
• IS 8 (Class 100,000) Manufacturing
• ISO 7 (Class 10,000) Finishing, Washing and Packing

Products and processes:
• High precision and miniature silicone parts
• State-of-the-art 2K/ 2-shot LSR parts
• Complex shapes, thin sections, parts with undercuts
• Low to high volume production, 100 to 100 million pieces
• High product purity and cleanliness from fully closed loop
automated production
• Elimination of secondary parts handling operations through
sophisticated robot technology
• High precision tool design and manufacture
• Wasteless and flashless designs

Markets Served:
• Life sciences
• Baby care
• Food & beverage
• Sanitary industry
• Appliances

LSR Injection Molding is ideal for:
• High precision requirements
• Complicated geometrical features
• Thin wall thicknesses (as low as 0.10mm / .004 inch)
• Extremely high volumes
• Fully automated production to ensure maximum process control and consistency of product
• Parts tolerating little to no flash
• Miniature components

Silicone (VMQ) - General Characteristics:
• Food-safe, clean and transparent
• Hardness of Shore A 10 to 80
• Good thermal stability
• Excellent resistance to weather, ozone and UVrays
• Excellent electric insulation properties
• Biocompatibility: USP Class VI, ISO 10993
• Withstand sterilization by: γ-radiation, steam, ethylene oxide (EtO)
•Neutral in taste and smell

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