Pressed and injection-molded rubber parts
Rubber parts manufactured by compression and injection molding are developed for applications that require defined geometries, controlled tolerances, and precise mechanical functions.
General features
Dimensional accuracy and geometric stability.
Controlled elastic properties and durability
Ability to integrate metal inserts
High repeatability in mass production
Adaptation to application-specific functional requirements
The processes used enable the production of components with stable elastic properties and high repeatability in manufacturing. The solutions are tailored to the functional requirements and operating conditions specific to each application. The category includes both rubber parts and rubber–metal assemblies, intended for industrial and automotive use.
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- Applications
Industries served
Automotive and commercial vehicles
- Engine cooling systems and auxiliary circuits for continuous operation
- Air intake routing in engine bays with limited space
- Elastic elements for vibration reduction in chassis-mounted assemblies
Motorcycles and scooters
- Air intake routing and engine ventilation in compact configurations
- Flexible connections for fuel or air, exposed to vibration
- Protection and damping elements for lightweight, moving components
Industrial equipment (HVAC, pumps, generators)
- Sealing of pumps, valves, and technical housings
- Air and technical fluid transfer in HVAC systems and generators
- Compensation of vibrations and tolerances in industrial assemblies
Agriculture
- Protection and sealing of systems exposed to dust, mud, and moisture
- Water and auxiliary fluid routing in agricultural machinery
- Elastic elements for shock absorption in mobile equipment
Residential and industrial appliances
- Sealing water circuits in washing machines and dryers
- Damping vibrations generated by motors and pumps
- Flexible connections for fluid transfer in continuous-use equipment
Heavy-duty
- Cooling and ventilation systems for construction and mining equipment
- Protection of joints and mechanisms exposed to heavy wear
- Elastic elements for reducing mechanical loads under severe operating conditions
Types of pressed and injection-molded parts
[1]
Gaskets
Fundamental elements intended for sealing hydraulic and pneumatic systems or mechanical housings, with the purpose of preventing fluid leaks and the ingress of contaminants.
- Dimensional accuracy: Manufactured with extremely tight tolerances to ensure a perfect and uniform seal between contact surfaces.
- Compound diversity: Made from optimized elastomers (NBR for resistance to oils and fuels, EPDM for weathering and ozone, Viton or Silicone for high temperatures), perfectly adapted to the specific operating environment.
- Elastic memory (compression set): High ability to return to the original shape after prolonged periods of compression, maintaining long-term sealing performance.
[2]
Dampers
Specialized components for vibration isolation, structural noise reduction, and shock absorption in mechanical assemblies or industrial equipment.
- Vibration control: The rubber’s chemical formulation is specifically calibrated to dissipate vibration frequencies generated by engines, pumps, or machinery.
- Energy absorption: Excellent ability to take up and attenuate dynamic impacts, protecting the main structure against micro-cracks or joint loosening.
- Thermomechanical stability: They maintain damping properties and fatigue resistance across a wide range of operating temperatures.
[3]
Bellows and sleeves
Flexible protection and guiding solutions designed to cover moving parts, joints, wiring, or tubing pass-through points.
- Structural flexibility: Bellows allow repeated axial, radial, and angular movements (extension and compression cycles) without delamination or tearing.
- Protective barrier: They act as a sealed shield against dust, moisture, mud, and external corrosive agents.
- Wear resistance: The material is formulated to withstand mechanical fatigue and continuous friction during system operation.
[4]
Rubber-to-metal parts
High-performance composite components, where rubber is vulcanized directly onto rigid inserts or supports made of steel, aluminum, or brass.
- Permanent adhesion: The advanced pressing process and surface treatments ensure an extremely strong chemical bond between elastomer and metal, preventing separation under maximum load.
- Structural synergy: The metal insert provides the rigidity and solid mounting points required for assembly, while the rubber body takes up torsional and shear loads.
- Heavy-duty applications: The ideal solution for engine mounts, heavy-duty elastic bushings, industrial rollers, and pump rotors subjected to complex mechanical loads.
[5]
Miscellaneous
This category reflects Parmel’s technological versatility and its ability to manufacture atypical or highly specialized pressed parts:
- Gas masks (components): Ergonomically molded elements made from hypoallergenic rubber compounds, safe for skin contact. They provide increased flexibility and a perfect seal along the facial contour, while also offering high resistance to chemical agents.
- Elastic couplings: Parts intended for power transmission between shafts. Their role is to compensate for small angular or axial misalignments and to absorb torsional shocks at motor start-up.
- Suction cups: Components with geometry optimized for vacuum handling systems (industrial automation). They provide strong grip on various surfaces and quick release, without leaving marks on the handled material.
- Molded air intake tubes: Connectors and elbows with complex, irregular 3D geometries obtained by pressing. They ensure smooth guidance of airflow in extremely compact spaces in the engine bay, being resistant to vacuum and high temperatures.
Materials used
NR / Isoprene — Natural rubber / polyisoprene
An elastomeric compound based on polyisoprene, known for high elasticity, very good resilience, and excellent behavior under dynamic loads. It is suitable for applications where flexibility, tear resistance, and rapid recovery after deformation are important. It has limited resistance to oils, fuels, ozone, and atmospheric aging unless protected with appropriate additives.
CR / Chloroprene — Chloroprene rubber
An elastomeric compound based on polychloroprene, with a good balance between mechanical strength and resistance to weathering, ozone, and flame. It is frequently used in technical applications where durability in outdoor environments and stable aging behavior are required. It has moderate resistance to oils and fuels, but better than natural rubber.
AEM / Ethylene Acrylate — Ethylene-acrylic rubber
An elastomeric compound based on ethylene-acrylate copolymer, developed for good resistance to temperature, oils, and automotive fluids. It is suitable for under-hood applications, hoses, gaskets, and elements exposed to heat and lubricants. It offers good flexibility and superior thermal stability compared to many conventional rubbers.
EPDM / Ethylene Propylene Diene Monomer — Ethylene-propylene-diene rubber
An elastomeric compound based on ethylene, propylene, and diene, with very good resistance to ozone, UV radiation, steam, water, and atmospheric aging. It is recommended for outdoor applications, seals, profiles, membranes, gaskets, and components exposed to the environment. It is not recommended for contact with mineral oils, fuels, or aromatic hydrocarbons.
NBR / Nitrile — Nitrile rubber
An elastomeric compound based on acrylonitrile-butadiene, valued for good resistance to oils, greases, fuels, and petroleum fluids. It is commonly used for gaskets, O-rings, seals, hoses, and sealing components. Oil performance increases with acrylonitrile content, but low-temperature flexibility may decrease.
HNBR / Hydrogenated Nitrile — Hydrogenated nitrile rubber
An elastomeric compound based on hydrogenated NBR, with superior resistance to temperature, oils, ozone, and aging compared to standard NBR. It is used in demanding applications, especially in the automotive, oil gas, and hydraulic industries. It offers a good combination of mechanical strength, thermal stability, and chemical resistance.
SBR / Styrene-butadiene — Styrene-butadiene rubber
An elastomeric compound based on styrene and butadiene, used for good abrasion resistance, stable wear behavior, and competitive cost. It is found in tires, rollers, technical mats, dampers, and general rubber applications. It has low resistance to oils, fuels, ozone, and weathering unless protected through appropriate formulation.
FKM / Fluoroelastomer — Fluorinated rubber
An elastomeric compound based on fluoroelastomer, designed for very high resistance to high temperatures, fuels, oils, solvents, and aggressive chemical agents. It is used in premium sealing applications where chemical and thermal stability is critical. It performs excellently in harsh environments, but low-temperature flexibility may be limited depending on the exact FKM type.
FVMQ / Fluorosilicone — Fluorosilicone rubber
An elastomeric compound based on fluorosilicone, combining silicone’s low-temperature flexibility with improved resistance to fuels and oils. It is used in aerospace, automotive, and sealing applications where large temperature variations and contact with petroleum fluids are present. It has lower mechanical strength than FKM or HNBR, but very good low-temperature performance.
- Product gallery
Pressed and injection-molded rubber parts
Gaskets
Ensure sealing of joints in static or dynamic systems, preventing fluid and gas losses and contributing to assembly reliability.
Rotors
Rubber or rubber–metal components used in pumping and dosing applications, providing controlled flexibility, sealing, and wear resistance.
Sleeves
Elastic elements for protection, connection, or sealing, used to compensate tolerances and adapt to movements or vibrations.
Buffers
Elastic parts intended to damp shocks and vibrations, protecting equipment and increasing the service life of assemblies.
Dampers
Rubber or rubber–metal components designed to dissipate energy and reduce vibrations, improving comfort and functional stability.
Elastic couplings
Flexible connection solutions between shafts or components, compensating misalignments and reducing the transmission of vibrations and mechanical shocks.
- Benefits and certifications
Product benefits certifications
The rubber components we develop and supply contribute to the reliable and durable operation of the systems in which they are integrated, through technical solutions tailored to the real requirements of the application. Our know-how in extrusion, compression, and injection processes enables design and material optimization, ensuring consistent performance and compatibility with operating conditions.
From an economic perspective, the feasibility-driven approach and process control support a balanced ratio between cost, quality, and product service life. Integrating in-house production with validated partner solutions enables flexibility in volume and delivery, reduces supply risks, and optimizes total costs across the entire product life cycle.
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