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Inyección HCR
HCR injection moulding

Silicone parts by HCR injection

We manufacture HCR (High Consistency Rubber) silicone parts by closed-mould injection. The high-consistency compound is fed through a cold extruder and vulcanises inside the mould under controlled temperature and pressure. Platinum or peroxide cure depending on the application.

Contact usView technical specifications
CatalysisPlatinum or peroxide
Hardness20–90 Shore A
TolerancesISO 3302-1 · class M2
CertificationsISO 9001 · ISO 13485 · USP VI · FDA · EN 45545-2

Post-curing in oven (4 h at 200 °C) on peroxide-cured series when volatile by-products have to be removed. Platinum-cured grades cure without post-curing.

The product

Platinum or peroxide cure, hardness from 10 to 90 ShA and specific formulations: high temperature, EN 45545-2 railway, FVMQ fluorosilicone or repeated autoclave sterilisation.

We run a dedicated HCR injection workshop with cold-extruder feeding and 100 % bespoke moulds. Weights from a few tenths of a gram up to several kilos, single or multi-cavity, manual or automatic demoulding depending on geometry. The shop floor processes more than 40 HCR formulations derived from the catalogue base series, according to the part's end use.

Pieza moldeada con aletas radiales
Placa moldeada con nervios
Perfil moldeado con tetones
Pieza moldeada con gancho y ranuras
Placa hexagonal moldeada con tetones perforados

Specifications

Process
HCR injection · high consistency · platinum or peroxide cure
Capacity
Dedicated HCR workshop · cold-extruder feeding · bespoke moulds (g to kg)
Cleanroom
550 m² ISO 8 · platinum-cured HCR moulding press · 3 stainless-steel ovens
Hardness
10 to 90 Shore A (full range in series 02 and 12)
Tensile strength
Standard series: 6 to 10 MPa · series 02 from 3.5 MPa in soft grades (ISO 37)
Elongation at break
300 to 700 % · up to 1,000 % in soft formulations (ISO 37)
Tear strength
Standard series: 15 to 30 kN/m · implantable series 17 up to 46.7 kN/m (ISO 34-1)
Density
VMQ series: 1.07 to 1.23 g/cm³ · FVMQ series 13 by design: 1.40 to 1.46 g/cm³ (ISO 2781)
Service temperature
–60 °C to +200 °C continuous · up to +300 °C in heat-resistant series
Tolerances
ISO 3302-1 class M2 · class M1 on critical parts
Management system
ISO 9001:2015 · ISO 13485:2016
Production environments
ISO 8 cleanroom (medical · pharmaceutical · food) · Controlled industrial workshop (rest)
Biocompatibility
USP Class VI · ISO 10993 (medical grade)
Food contact
FDA 21 CFR 177.2600 · CE 1935/2004 · BfR XV (food grade)
Sector-specific
EN 45545-2 railway · UL94 V-0 flame retardant
Sterilisation
Autoclave · steam · gamma radiation · ethylene oxide
Restricted substances
REACH (1907/2006) · RoHS (2015/863)
Typologies

Moulded HCR catalogue: three families cover most orders

Dynamic seals and gaskets

  • 01Custom O-rings
  • 02Rotary shaft seals
  • 03Pharmaceutical vial stoppers

Membranes and valves

  • 01Pumping membranes
  • 02Check valves
  • 03Regulator diaphragms

Electrical and control components

  • 01Industrial pushbuttons and keypads
  • 02High-temperature sealed connectors
  • 03Electrical insulators and bushings
Materials

Catalogue HCR series available for moulding

Series 2 – Peroxide-cure silicone for general and food-grade use

Series 2 is a peroxide-cured silicone compound designed for versatile processing by extrusion and moulding.

Shore A hardness10 – 90
Temperature range-60 °C / 200 °C
Peak temperature315 °C
Density (g/cm³)1.07 – 1.23
Tensile strength (MPa)3.5 – 9.5
Elongation at break (%)125 – 950
Tear strength (kN/m)10.0 – 23.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Tubes (Øint 0.5–145 mm), profiles (cords, square, rectangular), moulded parts and varied industrial applications.

Certifications and technical standards

  • FDA 21 CFR 177.2600
  • BfR IX and XV
  • CE 1935/2004 (Food contact)
  • ISO 10993 (medical grade depending on formulation)
  • USP Class VI
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 4 – Peroxide-cure silicone with low compression set and oil resistance

Series 4 is a peroxide-cured VMQ silicone formulation developed specifically for applications requiring excellent elastic recovery after compression (low compression set) and good resistance to oil contact.

Shore A hardness40 – 80
Temperature range-60 °C / 200 °C
Density (g/cm³)1.11 – 1.40
Tensile strength (MPa)6.0 – 7.5
Elongation at break (%)100 – 350
Tear strength (kN/m)10.0 – 15.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourTranslucent beige / Opaque beige
Available coloursRAL colours on request

Applications

  • Moulded parts or profiles subjected to repeated stress, O-rings, damping systems.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • NF ISO 815
  • ISO 3302 (M2/E1/L2)

Series 12 – Platinum-cure silicone with strong mechanical properties and versatility

Series 12 is a platinum-cured silicone compound processable by extrusion and moulding, recognised for its strong mechanical properties.

Shore A hardness20 – 90
Temperature range-60 °C / 200 °C
Peak temperature315 °C
Density (g/cm³)1.11 – 1.20
Tensile strength (MPa)6.0 – 9.0
Elongation at break (%)100 – 1000
Tear strength (kN/m)17.0 – 30.0
Curing systemPlatinum
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Tubes (Øint 0.5–145 mm), profiles (cords, square, rectangular), moulded parts and industrial or medical applications.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • BfR IX and XV
  • CE 1935/2004
  • ISO 10993 (depending on formulation)
  • USP Class VI
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 10 – High-tear platinum-cure silicone for medical and food-grade applications

Series 10 is a platinum-catalysed silicone blend designed to deliver exceptionally high tear strength.

Shore A hardness40 – 80
Temperature range-60 °C / 200 °C
Density (g/cm³)1.12 – 1.24
Tensile strength (MPa)7.0 – 9.0
Elongation at break (%)320 – 760
Tear strength (kN/m)33.0 – 55.0
Catalysis typePlatinum
Processing methodExtrusion and moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Inflatable seals, tubes, profiles and moulded parts for industrial, medical and food-contact applications.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • BfR IX and XV
  • CE 1935/2004
  • ISO 10993 (depending on formulation)
  • USP Class VI
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 14 – Enhanced peroxide silicone for steam and fluid resistance

Series 14 is a peroxide-cured silicone compound formulated specifically to improve resistance to water steam, coolant fluids and oils.

Shore A hardness60 – 70
Temperature range-60 °C / 200 °C
Density (g/cm³)1.16 – 1.20
Tensile strength (MPa)8.0 – 8.0
Elongation at break (%)300 – 360
Tear strength (kN/m)15.0 – 18.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / RAL colours
Available coloursRAL colours on request

Applications

  • Autoclave gaskets, parts in contact with steam or coolants.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • BfR IX and XV
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 22 – Peroxide silicone resistant to steam and aromatic oils

Series 22 is a peroxide-cured silicone compound processable by extrusion and moulding.

Shore A hardness40 – 80
Temperature range-60 °C / 200 °C
Density (g/cm³)1.11 – 1.36
Tensile strength (MPa)6.4 – 7.9
Elongation at break (%)130 – 390
Tear strength (kN/m)9.5 – 14.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourRAL1013 Translucent

Applications

  • Autoclave gaskets, moulded parts, O-rings.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant

Series 9 – Peroxide-cure silicone with excellent thermal resistance (300°C)

Series 9 is a peroxide-cured silicone compound formulated specifically to deliver excellent thermal stability.

Shore A hardness40 – 68
Temperature range-60 °C / 300 °C
Peak temperature315 °C
Density (g/cm³)1.11 – 1.20
Tensile strength (MPa)6.0 – 8.0
Elongation at break (%)300 – 400
Tear strength (kN/m)12.0 – 17.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Profiles, industrial oven equipment, moulded parts and extreme thermal applications.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 16 – Fire-retardant self-extinguishing peroxide silicone (EN 45545-2) PMQ

Series 16 is a peroxide-catalysed silicone blend, processable by extrusion and moulding, designed specifically to provide excellent fire resistance and self-extinguishing properties.

Shore A hardness30 – 85
Temperature range-60 °C / 200 °C
Density (g/cm³)1.09 – 1.26
Tensile strength (MPa)5.0 – 9.0
Elongation at break (%)380 – 850
Tear strength (kN/m)17.0 – 25.0
Oxygen index (LOI)32.7
Smoke density (Ds max)84.7
ITC / Hazard Level0.06
Railway hazard levelHL1, HL2, HL3
Catalysis typePeroxide
Processing methodExtrusion and moulding
Base colourBlack / Blue-black (RAL 9017 / RAL 5004)
Available coloursBlack (RAL 9017), Blue-black (RAL 5004)

Applications

  • Railway applications (seals, profiles, gaskets, thermal protections, insulation panels).

Certifications and technical standards

  • EN 45545-2 R22/R23 HL1-HL2-HL3
  • RoHS compliant
  • REACH compliant
  • NF EN 45545-2:2020
  • EN ISO 4589-2 (O₂ Index 32.7%)
  • EN ISO 5659-2 (Ds max 84.7)
  • EN 17084 (ITC PNL 0.06)

Series 17 – Platinum-cure short-term implantable silicone (< 29 days)

Series 17 is a platinum-catalysed silicone blend, designed specifically for medical applications requiring short-term implantation (less than 29 days according to NUSIL data).

Shore A hardness25 – 80
Temperature range-60 °C / 200 °C
Density (g/cm³)1.11 – 1.20
Tensile strength (MPa)7.9 – 10.8
Elongation at break (%)700 – 1200
Tear strength (kN/m)33.5 – 46.7
Catalysis typePlatinum
Processing methodExtrusion and moulding
Base colourTranslucent

Applications

  • Tubing, tubing with radiopaque lines, profiles, moulded parts and O-rings for medical applications.

Certifications and technical standards

  • USP Class VI
  • ISO 10993 (depending on formulation)
  • RoHS compliant
  • REACH compliant

Series 13 – Fluorosilicone (FVMQ) with high resistance to oils and solvents

Series 13 is a fluorosilicone blend (FVMQ base) catalysed with peroxide, designed specifically to provide exceptional resistance to mineral oils, fuels and organic solvents.

Shore A hardness40 – 70
Temperature range-60 °C / 170 °C
Density (g/cm³)1.40 – 1.46
Tensile strength (MPa)6.0 – 7.0
Elongation at break (%)160 – 400
Tear strength (kN/m)10.0 – 21.0
Catalysis typePeroxide
Processing methodExtrusion and moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Profiles, moulded parts and special components for environments with oils or solvents.

Certifications and technical standards

  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 11 – Peroxide-cure electroconductive silicone

Series 11 is a peroxide-catalysed silicone blend with electroconductive properties.

Shore A hardness50 – 70
Temperature range-50 °C / 210 °C
Density (g/cm³)1.11 – 1.16
Tensile strength (MPa)5.0 – 5.0
Elongation at break (%)100 – 250
Tear strength (kN/m)5.0 – 10.0
Catalysis typePeroxide
Processing methodMoulding (extrusion subject to evaluation)
Base colourBlack
Available coloursBlack only

Applications

  • Wiring equipment, connectors, moulded parts and components with electrical conductivity.

Certifications and technical standards

  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/L2)
Salas blancas ISO 8 del grupo · Francia e Italia
ISO 8 cleanroom · France

550 m² of cleanroom for medical, pharmaceutical and food grade HCR parts

The ISO 8 cleanroom at Progress Silicones (France, 550 m² · ISO 14644-1 · BMS) houses the platinum-cured HCR moulding press and 3 stainless-steel ovens with sealed tanks, dedicated to parts for regulated sectors. 12 qualified operators trained specifically for ISO 10993 and USP Class VI grades.

The enclosure is pressurised and monitored, with access restricted to qualified personnel. Mixing and colour dosing of medical, pharmaceutical and food HCR are carried out inside the cleanroom. Periodic re-qualification of facilities and equipment under ISO 13485 and GMP (Good Manufacturing Practice).

Each batch produced in the cleanroom is supplied with a certificate of conformity, process parameter logs and full raw material traceability to feed the customer's technical file or regulatory validation dossier.

Discover the ISO 8 cleanroom
Services and processes

Moulding processes of the group

LSR injection Process LSR injection Learn more → Compression moulding Process Compression moulding Learn more → Plastic-silicone overmoulding Process Plastic-silicone overmoulding Learn more → Design and tooling Process Design and tooling Learn more →
Catalogue

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Need parts by HCR injection?

Send us the drawing (STEP, IGES or PDF), the target Shore A hardness, the applicable HCR series or end-use sector, the required standards (FDA, USP VI, ISO 10993, EN 45545-2, UL94…) and the estimated annual volume. We will confirm mould feasibility and provide a quote with the tooling lead time.

Email
info@prosilicones64.com
Form
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