O-Ring
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Seals and Rubber Technology

Seals and Rubber Technology Epidor INDEX

EPI INDUSTRIES Family of Companies, a consolidated group of companies with more than sixty years of experience, creates in May 2016 EPIDOR Seals and Rubber Technology. Epidor Seals and Rubber Technology A new company was born with the mission of continuing to develop the business of sealing and vibration insulation products of Epidor SAU and Lidering SAU, prestigious firms with several decades of experience in the market. Epidor Seals and Rubber Technology Cfntril • tVadquvtm Epidor Seals and Rubber Technology inherits all the knowledge of the product and the market and is oriented to the...

Seals and Rubber Technology Epidor Seals and Rubber Technology offers equipment manufacturers (OEMs) a wide range of product-related • Design and development of innovative technical solutions for high quality mechanical engineering components. • Reports of first samples, quality controls. • Vibration isolation for the protection of people, equipment and working environments. • Trainings adapted to each need. • Support in the design of your equipment. • Personalized logistics: special labels, kits for spare parts or assembly, stock of material, packaging adapted to each product. • Product...

OUR CUSTOMERS EQUIPMENT MANUFACTURERS (OEM) Our value contribution to equipment manufacturers (OEMs) lies in our collaboration to design the best solution for their products. This implies intense communication to understand the technical needs of the product to be manufactured, as well as its characteristics and the competitive advantages that this product must meet in its market. We collaborate with the technical, engineering, product and prototype design, purchasing and procurement departments to define the standards of pre-shipment, service, deliveries, schedules, assembly kits or spare...

Seals and Rubber Technology MAIN PRODUCTS Since the middle of the 20th century, we have established close cooperation with the world’s leading manufacturers of sealing and vibration isolation products. From this collaboration is born a very wide range of products and solutions. In the whole product range we have the ability to make tailor-made solutions. HYDRAULICS AND PNEUMATICS SEALING The experience accumulated over more than 50 years in the design, manufacture and marketing of sealing solutions for hydraulic and pneumatic cylinders, allows us to offer a wide range of collars, scrapers...

O-rings Introduction O-rings are elastomer rings used in fluid sealing. The range of O-rings comprises the following types: O-rings of Homogeneous material There is a similar element for the same applications, in the form of a cross with rounded ends (X-Ring). O-rings encapsulated Its manufacture can be by: Injection moulding (large quantities) Compression moulding (small series and large sizes) Machining O-ring extrusion, O-ring cutting and subsequent bonding by vulcanization or gluing Continuous Moulding Injection Molding Manufacture of gaskets. Figure 1 The first patent of this seal is...

The O-ring owes its sealing capacity to its elastic nature which allows axial or radial deformation of its section, depending on the design of its housing. It should be noted that an elastomer is non-compressible; i.e. under a compression load it will react by adapting to the available volume of the housing. However, spongy or cellular elastomers are compressible because they contain gas (air CO2, N2) in their structure. When the O-ring is subjected to a certain force, depending on the design of its groove or housing, the joint reacts by showing one type of deformation or another. This...

Epidor Seals and Rubber Technology MATERIALS O-rings are manufactured from elastomers for two reasons: ■ They are easy to install and can be deformed for convenience. ■ They are mounted in housings and are adapted to them by expansion or by upsetting. Elastomers are classified into thermostables and thermoplastics. They are differentiated by the degree of cross-linking after the curing or vulcanisation reaction and by their behaviour with temperature. The most interesting elastomers from the point of view of sealing are thermosets. THERMICALLY STABLE POLYMERS The main characteristic of a...

Materials I ... THERMICALLY STABLE POLYMERS Acrylonitrile / Butadiene copolymer (NBR) Synthetic rubber developed from a copolymer of acrylonitrile and butadiene, whose concentration in acrilonitrile varies between 18 % and 50 %. If the acrylonitrile concentration is low, the NBR obtained has a higher resilience and its elasticity is improved at low temperature. If the acrylonitrile concentration is high then the chemical resistance to oil increases, however the elasticity and the resistance to the remaining deformation decrease. Fluorelastomers, Viton® being the best known of them, are the...

Epidor Seals and Rubber Technology THERMICALLY STABLE POLYMERS ... Methyl Silicone Vinyl Rubber (VMQ) Ethylene / propylene / diene terpolymer (EPPDM) Silicone rubbers stand out for their high thermal resistance and good flexibility when cold. They are highly recommended for high and low temperature applications. Elastomer with good wear resistance. Its composition contains between 45 % and 75 % of ethylene, being in general more resistant the higher this percentage is. ■ Very good resistance to oxygen and ozono. ■ The electrical properties are excellent as well as its resistance to...

... THERMICALLY STABLE POLYMERS Hydrogenated acrylonitrile / butadiene copolymer (H-NBR) Perfluorocarbon Rubber (FFPM / FFKM) They are fully fluorinated polymers with elastomer characteristics and are highly recommended for applications with aggressive chemicals at high temperatures. Its properties depend on the initial concentration of acrylonitrile and the degree of hydrogenation of the copolymer butadiene. CHARACTERISTICS OF INDUSTRIAL INTEREST: Almost universal chemical inertia, similar to PTFE. High temperature thermal stability. CHARACTERISTICS OF INDUSTRIAL INTEREST: Excellent...