Silicone O-Rings
Silicone VMQ O-Rings molded by compression or injection. Static or dynamic sealing in critical applications. Hardness 30–90 Shore A. Certified materials FDA, EC 1935/2004, EN 45545-2, UL94, USP VI, and ISO 10993. Manufacturing in industrial environment or ISO 8 cleanroom.
Process Principle
Silicone O-Rings are manufactured by compression or injection molding, depending on the volume and required precision. Their circular profile ensures a hermetic and uniform seal in high-pressure, vacuum, or high-temperature applications.
Materials and Formulations
Made from VMQ silicone with hardnesses between 30 and 90 Shore A. Available formulations: food-grade, medical-grade, fire-retardant, antistatic, and fluorosilicone (FVMQ). Compliant with FDA 21 CFR 177.2600, EC 1935/2004, EN 45545-2, UL94, USP VI, and ISO 10993.
Dimensions and Finishes
Available according to standards AS568, ISO 3601, BS1806 or per custom drawing. Diameters from 0.5 mm up to 1,000 mm, with ISO 3302-1 M1/F tolerances. Smooth or micro-textured finishes, in standard colors (translucent, red, black, grey) or specific RAL colors.
Production Environments
Production in an automated industrial environment or an ISO 8 cleanroom for the medical, food, and pharmaceutical sectors. Processes certified under ISO 9001 and ISO 13485 with full traceability, hardness control, and sealing and thermal aging tests.
Product Gallery
Key Technical Data
Typical values obtained according to series datasheets (1, 2, 9, 12) and indicated standards. May vary based on hardness, formulation, and raw material. Final validation is the customer's responsibility.
| Property | Typical Values | Standard |
|---|---|---|
| Hardness (Shore A) | 20 – 90 (núcleo habitual: 40–70) | ISO 7619-1 |
| Tensile Strength | 6 – 9 MPa (según dureza) | ISO 37 |
| Elongation at Break | 300 – 700 % (blandos hasta 1000 %) | ISO 37 |
| Tear Resistance (Type C) | 15 – 30 kN/m (alto desgarro hasta 40 kN/m) | ISO 34-1 |
| Density | 1,11 – 1,20 g/cm³ (extremos 1,07 – 1,23) | ISO 2781 |
| Working Temperature | –60…+200 °C (up to +300 °C in thermal series) | — |
| Tolerances | Molding Class M2 | ISO 3302-1 |
| Sectoral (On Request) | FDA / CE 1935/2004 / BfR / EN 45545-2 / RoHS / REACH / UL94 | — |
Certifications and Regulatory Compliance in Silicone Molding
Every molding batch is manufactured under strict validation protocols, guaranteeing conformity with international standards and integral traceability of the material and the mold.
Main Certifications
- ISO 9001:2015 – Quality Management System
- ISO 13485:2016 – Medical Devices
- EN 9100 – Aerospace and Defense
- GMP – Good Manufacturing Practices
- ISO 10993 – Medical Biocompatibility
- USP Class VI – Pharmaceutical Biocompatibility
Regulatory Compliance
- FDA 21 CFR 177.2600 – Food Contact
- EC 1935/2004 – Materials in Contact with Food
- EN 45545-2 – Railway Fire Protection
- UL94 – Material Flammability
- ISO 10993 and USP Class VI – Medical and Pharmaceutical Biocompatibility
- REACH (1907/2006) and RoHS (2015/863) – Chemical and Electrical Substances
Main Application Sectors
Key Applications
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Precision static or dynamic seals
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Pressurised connections and fittings
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Vacuum and high-temperature systems
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Medical equipment, valves, and pumps
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Technical spares and industrial maintenance
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Gaskets for Tri-Clamp couplings in food processing lines (FDA)
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Sealing in chemical product and solvent dosing valves (FVMQ)
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Safety gaskets in industrial gas pressure regulators
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Seals for injectors and carburettors in high-performance automotive
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Small-diameter O-rings for surgical instruments
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Sealing for lids and covers of laboratory peristaltic pumps
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Gaskets for fibre optic connectors and liquid cooling systems
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Seals for precision pneumatic cylinder pistons
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Sealing for fittings in ultra-pure water systems (Cleanroom)
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O-rings for aviation oil and fuel filters
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Seals for gas and liquid chromatography equipment
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Gaskets for the base of heating elements in sealing machines
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Sealing in pipework and joints in hyperbaric chambers
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Gaskets for food pasteurisation and homogenisation equipment
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Seals for flow metres and level sensors
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Gaskets for cryogenic valves (Low Temperature)
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Sealing in automatic dosing syringe bodies
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Gaskets for electrical transformer access lids
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Seals in hydraulic braking systems (Railway)
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Gaskets for precision machinery lubrication systems
Manufacturing and Delivery Options
- Geometries: Standard (AS568, ISO 3601) or per drawing
- Diameters: From 0.5 mm up to 1,000 mm
- Materials: VMQ or FVMQ silicone
- Formulations: Food-grade, Medical-grade, Fire-retardant, Antistatic, Fluorinated
- Production: Industrial or ISO 8 Cleanroom
- Delivery: Tested, lubricated, and traced gaskets
- Entrega: bolsas o bandejas identificadas
Product Selection Matrix
| Customer Requirement | Recommended Solution |
|---|---|
| Flat or die-cut seals | Flat Gaskets |
| Dynamic or inflatable seals | TIXAN'AIR® Inflatable Seals |
| Precision molded parts | HCR Injection Molding |
| Integration with complex systems | Overmolding |
| Juntas vulcanizadas en aro | Juntas vulcanizadas en aro |
Technical Conclusion and Recommendations
The silicone O-Rings from ProSilicones64 guarantee a reliable, clean, and durable seal even under extreme conditions.
Their controlled manufacturing in ISO 9001 and ISO 13485 environments and the use of certified silicones (FDA, EC 1935/2004, EN 45545-2, UL94, USP VI, ISO 10993) ensure total regulatory compliance in critical sectors.
An optimal solution for precision sealing in industrial, medical, and food environments, consolidating ProSilicones64 as a European benchmark in technical elastomers.
La solución clásica para estanqueidad industrial.
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