What Sterne Silicone Performance does

Sterne Silicone Performance (legal entity: STERNE SAS) designs, develops, and manufactures custom silicone elastomer articles for enterprise customers across four verticals: healthcare/medical, transport/railway, energy, and industrial/agro-food. Founded in 1996 in Cavaillon, France by C\u00e9line Laget, the company operates from a 4,000 m2 consolidated facility that includes 700 m2 of ISO 6, 7, and 8 classified clean rooms dedicated to medical device manufacturing. The company holds dual ISO 9001:2015 and ISO 13485:2016 certifications and qualifies its materials to USP Class VI, ISO 10993, FDA 21 CFR 177.2600, CE 1935-2004, and railway fire/smoke standards (NF F16-101, BS 6853, EN 45545-2).

Core production capabilities span the full silicone transformation toolkit: LSR (Liquid Silicone Rubber) injection molding, HCR (High Consistency Rubber) compression and injection molding, extrusion, calendering, dipping, coating, confection, and 3D additive manufacturing using the proprietary SiO-Shaping platform. Sterne sells seven registered proprietary material brands (SWELLSIL for cellular food-grade silicone, STIRLENE for high-temperature up to 400\u00b0C, ELASTALERN for fluoro-carbon resistance, STILUVENE for UV-curing, STIRMOTIV for rail flame/smoke compliance, STAMINALENE for dynamic fatigue, and DIODON for inflatable seals) plus the HIGHTUBE range for medical tubing. Differentiating process IP includes internally developed UV-curing crosslinking (since 2015, in partnership with Momentive), fully automated LSR injection with proprietary robotic grippers, and in-house tooling via the 2014 acquisition of 5 Axes.

Sterne operates as a B2B custom manufacturer on a quote-based, multi-year project model, with dedicated project managers supporting clients from consulting and prototyping through full-scale production. Distribution is direct: headquarters in France, a commercial bureau in Villasanta, Italy (Silicone & Specialties), and a Brazil partnership with EXSTO Brasil at Itupeva-SP established in 2023. The company joined the EXSTO Group in 2022 and was reclassified as an ETI (Entreprise de Taille Interm\u00e9diaire). Named customers include Carmat, Sartorius, Acteon, Bioclin, Eriks, Mabeo, MID, Machouyou, and Baultar in medical/healthcare, plus TGV Korea and the London Victoria Line metro project in transport.

Name

Sterne Silicone Performance

Legal name

STERNE SAS

Website

https://sterne-elastomere.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

101–250 employees

Short description

French custom silicone elastomer manufacturer serving medical, transport, energy, and industrial clients with ISO 13485-certified clean room production, proprietary 3D printing (SiO-Shaping), and seven branded material lines. Subsidiary of EXSTO Group since 2022.

Ownership category

akta.pro rank

Product category

Custom Silicone Manufacturing

NAICS

Surgical and Medical Instrument Manufacturing (339112), Surgical Appliance and Supplies Manufacturing (339113)

SIC

Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821), Plastics Products, Nec (3089), Surgical & Medical Instruments & Apparatus (3841)

akta.pro primary industry

Elastomers & Synthetic Rubber Polymer Manufacturing (SBR, BR, NBR, EPDM, Silicone base polymers) (IMANAAAD)

akta.pro secondary industries

Seals, Gaskets & O-Rings (Industrial Elastomer) (IMANALAC), Medical & Life Sciences Injection Molding (Devices, Diagnostics, Cleanroom) (IMANAFAC), Aerospace Seals, Gaskets, O-Rings & Elastomeric Components (IMABANAF)

Keywords

• Custom silicone manufacturing
• Medical silicone components
• Silicone elastomer processing
• Silicone injection molding
• Silicone 3D printing

Headquarters

HQ city

Cavaillon

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Custom Silicone Manufacturing: Custom silicone elastomer manufacturing including injection molding, compression molding, extrusion, confection, and 3D printing. Services range from consulting and prototyping through full-scale production for medical devices, transport, energy, and industrial applications.
2. Technical Consulting and Development: Technical advisory services for material selection, product design, tooling conception, and process development from concept through market launch.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Sterne Silicone Performance designs, develops, and manufactures custom high-performance silicone elastomer components for industrial clients. The company transforms silicone into molded parts, extruded profiles and tubes, confectioned articles, and inflatable seals, while also offering material consulting, prototyping, and 3D silicone printing services. It operates clean rooms (ISO 6/7/8) for medical device production and serves four primary markets: Healthcare/Medical, Transport, Energy, and Industry.

Product overview

Sterne Elastomère is a specialized silicone transformation company offering a comprehensive portfolio of proprietary material brands and manufacturing processes. Their core offering includes seven specialized silicone material sub-brands (SWELLSIL® for food-grade cellular silicone, STIRLENE® for high-temperature applications up to 400°C, ELASTALERN® for fluoro-carbon resistance, STILUVENE® for UV-curing silicone, STIRMOTIV® for flame-resistant railway applications, STAMINALENE® for ultra-high performance dynamic applications, and DIODON™ for inflatable seals, plus HIGHTUBE™ for high-performance medical tubes), combined with advanced manufacturing processes including SiO-Shaping® 3D printing technology, injection and compression molding, extrusion, confection, and finishing services. The company operates across four market sectors: Healthcare/Medical, Transport, Energy, and Industry, with production facilities including 700m² of clean rooms (ISO 6, 7, 8) and industrial workshops totaling over 3000m².

Differentiator

Problem solved

Functional benefit

Brands

• SWELLSIL®: Cellular silicone range for food industry applications
• STIRLENE®
• ELASTALERN®
• STILUVENE®
• STIRMOTIV®
• STAMINALENE®
• SiO-Shaping®
• Diodon®
• HIGHTUBE®

Products and services

• Custom Molded and Overmolded Silicone Parts (Pièces moulées et surmoulées) Custom silicone molded and overmolded components produced via injection molding and compression molding processes using HCR and LSR silicone grades. Designed for medical devices, transport, energy, and industrial applications requiring specific mechanical and chemical properties.
• Custom Extruded Profiles, Tubes and Cords (Profils, tubes, cordes) Silicone profiles, tubes, cords and similar extruded items used in railway sealing, medical peristaltic pump tubing, and industrial applications. Manufactured via continuous extrusion processes in various hardness and dimension ranges.
• Manufactured Silicone Articles (Articles confectionnés) Custom fabricated silicone articles produced by assembling, cutting, splicing and finishing silicone elements. Includes dip-coated and calendered products for medical and industrial uses.
• DIODON Inflatable Seals (Joints gonflables) High-performance inflatable seal range for static or dynamic sealing solutions that compensate pressure and temperature differences between interior and exterior environments.
• HIGHTUBE High-Performance Tubes High-performance tubing range designed for pharmaceutical and medical applications, providing durable resistance for specific peristaltic pump applications and medical device fluid paths.
• SiO-Shaping 3D Silicone Printing Service Proprietary 3D printing technology for silicone using UV-curing filament deposition, offering rapid prototyping with mechanical and elongation properties matching final injected parts. Includes 1601 (up to 205x200x100mm, 30-60 Shore A) and 2201 (up to 500x500x500mm, 10-80 Shore A) versions.
• SWELLSIL Cellular Silicone Proprietary cellular silicone range for agro-food sector with FDA 21 CFR 177.2600 approval. Used in food-contact applications requiring compressible sealing materials.
• STIRLENE High Thermal Silicone High thermal properties silicone range with temperature resistance up to 400°C in hot air, suitable for thermal insulation and high-temperature industrial applications.
• ELASTALERN Fluoro-Carbon Silicone Fluoro-carbon silicone with elastic properties supporting large deformations before rupture, offering resistance to hydrocarbons, acids, solvents, steam and hot water for industrial applications.
• STILUVENE UV-Crosslinkable Silicone UV-crosslinkable silicone range optimized for ultra-violet light curing processes, combining silicone properties with shorter crosslinking reaction and lower energy consumption.
• STIRMOTIV Railway/Transport Elastomer Performance elastomer range for railway, public transport, and nautical applications meeting fire and smoke toxicity standards NF F16-101, BS 6853, and EN 45545-2.
• STAMINALENE Ultra High-Performance Silicone Ultra-high performance silicone with improved fatigue and abrasion resistance for dynamic applications requiring extended service life under mechanical stress.
• Silicone Consulting and Product Development Service Technical advisory and product development services covering material selection, product design, tooling conception, and process development from concept through market launch for clients needing custom silicone solutions.

Quantifiable outcome

• Fully automated LSR injection with no human material handling ensures homogeneous quality and eliminates foreign body contamination
• +2 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Silcomp FrancecoreOthersPrivileged partnership with Silcomp France for raw material supply. Global volume-based pricing policy and R&D exchange including new material testing at Sterne facilities and joint development with direct access to supplier R&D departments.
• MomentivecoreStrategic or Co-development PartnerStrategic material development partnership with Momentive. Jointly developed UV-curing silicone processes since 2015. Direct R&D collaboration and exclusive material testing. Full range of FDA, USP Class VI, ISO 10993 certified raw materials.
• Elkem SiliconescoreOthersPrivileged partnership with Elkem Silicones for raw material supply. Volume-based pricing and R&D exchange including joint material development and direct access to supplier R&D capabilities.
• NuSilcoreOthersPrivileged partnership with NuSil for raw material supply. R&D exchange program and joint material development. Full range of FDA, USP Class VI, ISO 10993 certified silicone materials.
• 5 AxescoreImplementation/ SI/ Consulting PartnerAcquired in March 2014, 5 Axes is an expert in tooling machining for all materials, specializing in silicone tooling for 8+ years. Provides in-house tool development capability and CNC machining for production tooling.
• EXSTO BrasilcoreStrategic or Co-development PartnerPartnership established in 2023 for Sterne silicone activity expansion in Brazil. Located at Itupeva, São Paulo, enabling local presence in South American market.
• Local Adapted EnterpriseminorOthersPartnership with a local Adapted Enterprise (Entreprise Adaptée) for social inclusion of disabled workers, providing meaningful employment opportunities.

Scale indicators6 records

Recent moves16 records

Expansion highlights6 records

Direct peers

• Raumedic: German medical polymer processor producing silicone and thermoplastic components for medical devices, pharmaceuticals, and life sciences with significant clean room manufacturing. Highly comparable in medical-grade silicone focus, regulatory certifications, and custom manufacturing service model.
• Novotema: Italian custom elastomer manufacturer (part of Novotema Group) producing silicone and rubber components for industrial, food, and pharmaceutical applications. Comparable mid-sized European custom silicone transformer with similar end-market focus.
• Helvoet: Belgian custom elastomer manufacturer specializing in silicone, rubber, and thermoplastic components for medical, food, and industrial markets. Helvoet is the closest direct competitor in custom silicone transformation with clean room capabilities and a comparable B2B custom manufacturing model.

Emerging players

• Spectrum Plastics Group: US-based custom polymer and silicone component manufacturer focused on medical devices and specialty industrial applications. Comparable in custom medical silicone transformation, with an emerging specialty focus in similar end-markets.
• KRAIBURG TPE: German custom thermoplastic elastomer and silicone material manufacturer serving industrial, automotive, and consumer markets. Comparable mid-sized custom elastomer developer with proprietary material compounds similar to Sterne's branded material portfolio approach.

Broad incumbents

• Saint-Gobain: French global materials group with a High-Performance Materials segment producing silicone-based sealing and polymer solutions for industrial, healthcare, and life sciences markets. A French broad incumbent competing in the same verticals.
• Parker Hannifin: Global motion and control technologies leader with a substantial Engineered Materials Group producing silicone seals, gaskets, and O-rings for aerospace, medical, and industrial customers. A broad incumbent in the same product categories as Sterne.
• Trelleborg Sealing Solutions: Global leader in polymer technology and sealing solutions including silicone elastomer components across aerospace, automotive, medical, and industrial markets. Broad incumbent whose specialty seals business competes with Sterne on large programs.
• Freudenberg Sealing Technologies: Global sealing technology company within the Freudenberg Group producing silicone and elastomer solutions for automotive, medical, food, and industrial applications. Broad incumbent with overlapping silicone sealing portfolio.
• Datwyler: Swiss-listed sealing solutions and elastomer components company with a Healthcare Solutions business serving medical device and pharmaceutical customers. Overlaps directly with Sterne's medical silicone components business as a larger, publicly-listed competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCg7uVbBClw8IVc7UHu2O8qg
• Facebookfacebook.com/sterne.elastomere
• LinkedInlinkedin.com/company/sterne-sas

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sterne Silicone Performance