What SILAM S.A. does

SILAM S.A. (legal name: Siliconas Silam S.A.) is a privately held Spanish B2B manufacturer founded in 1964 in Zumaia, Gipuzkoa, and operating as a compounder and extruder of HTV (heat-vulcanizable) silicone elastomer. The firm runs two production sites — a 6,000 m² main plant in Zumaia (30 km from San Sebastian) and a 3,000 m² secondary plant through its wholly-owned subsidiary Dicoinsa in Sant Llorenç d'Hortons (Barcelona) — for a combined ~9,000 m² of industrial space. Its offering spans the silicone value chain from raw bases and additives through to ready-to-use compounds (sheets, continuous strips, cylindrical bales) and finished technical components (tubes, gaskets, profiles, cables, O-rings, vulcanized frame joints) produced via compression and injection molding, extrusion, and calendaring.

The business is built on custom formulation: SILAM develops proprietary recipes in its own Silam Tech Center and tests them in an in-house laboratory against ISO, EN, ASTM, VDE, NF, and BS standards, allowing it to serve regulated and safety-critical applications. Its commercial backbone is a long-standing agreement (since 2000) making it the official HCR silicone mixer of Wacker Chemie GmbH for Spain and Portugal, which secures base-silicone supply and Iberian distribution reach. Marketing is field-sales-driven, multilingual web-led (ES/EU/EN/FR/DE), and reinforced through participation in the Rubber Consortium, ACEDE, and Naturklima Foundation networks. Pricing is opaque and quoted per specification, with no public disclosures.

End-markets are diversified across ten verticals — aeronautics, automotive, construction, food contact, household appliances, lighting, railway, laboratories and pharmaceuticals, electrical transmission, and agriculture — gated by a dense certification stack (FDA, Bfr, European Pharmacopoeia, USP XXV, RAL H-18, EN 549, ISO 9001, ISO 14001, TÜV, plus REACH/RoHS compliance). The headcount band sits at 11–50 employees and SILAM exports globally from its Spanish base, describing itself as a "European benchmark and leader in the Iberian Peninsula" for HTV silicone transformation.

Name

SILAM S.A.

Legal name

Siliconas Silam S.A.

Website

https://silam.com

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

11–50 employees

Short description

SILAM S.A. is a privately held Spanish B2B compounder and extruder of HTV silicone elastomer, producing custom formulations and technical components (tubes, gaskets, profiles, cables). It serves regulated industrial verticals from food contact and pharma to rail, aerospace, and automotive via its Zumaia and Barcelona plants.

Ownership category

akta.pro rank

Headquarters

HQ city

Zumaia

HQ country

Spain

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Silicone Compounds and Mixtures Sales: Formulation and manufacture of ready-to-use silicone compounds (bases, additives, mixtures) in accordance with technical characteristics required by the application and customer such as hardness, density, breaking load, elongation, tear resistance, fire resistance, oil resistance, etc. Products supplied in various forms: sheets of different sizes and thicknesses, continuous strips, cylindrical bales.
2. Technical Silicone Components: Development, production and commercialization of technical components made of solid silicone and silicone foam through extrusion and moulding: tubes, gaskets, profiles, cables and technical parts. Includes value-added processes like cutting, marking, die-cutting, gluing, joining for O-rings, vulcanized frame joints.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

SILAM formulates and manufactures ready-to-use HTV silicone compounds (bases, additives, and mixtures) tailored to customer-specified hardness, density, breaking load, elongation, tear, fire, and oil resistance. It also develops, produces, and sells technical silicone components made from solid silicone and silicone foam via extrusion and moulding, including tubes, gaskets, profiles, cables, and custom technical parts supplied globally to industrial sectors.

Product overview

SILAM S.A. is a silicone solutions provider offering a comprehensive portfolio of HTV (Heat Vulcanizable Elastomer) products. The core offering consists of silicone compounds (ready-to-use formulations), silicone bases (raw polymers), and silicone additives (property modifiers). Technical components include silicone tubes, gaskets, profiles, and cables manufactured via extrusion and molding processes. The company operates two manufacturing facilities in Spain (Zumaia and Barcelona) and holds partnerships including official HCR silicone mixer status for Wacker Chemie GmbH for Spain and Portugal since 2000. Products serve industries including automotive, aerospace, rail, food contact, pharmaceuticals, lighting, construction, and electrical transmission.

Differentiator

Problem solved

Functional benefit

Products and services

• Silicone Compounds (Mezclas de silicona) Ready-to-use HTV silicone compounds formulated and manufactured to customer-specified technical characteristics such as hardness, density, breaking load, elongation, tear resistance, fire resistance, and oil resistance; supplied in sheets of various sizes and thicknesses, continuous strips, and cylindrical bales to industrial customers.
• Silicone Bases (Bases de silicona) Pure silicone polymers serving as the fundamental raw materials for downstream silicone product manufacture, providing essential elasticity and high-temperature resistance for industrial compounders and processors.
• Silicone Additives (Aditivos de silicona) Substances added to silicone bases to modify or enhance intrinsic properties such as wear resistance, color, and thermal conductivity, used by industrial compounders and manufacturers.
• Silicone Technical Components (Componentes de silicona) Technical components manufactured from solid silicone and silicone foam via extrusion and moulding, including tubes, gaskets, profiles, and cable products, with value-added processes such as cutting, marking, die-cutting, gluing, joining for O-rings, and vulcanized frame joints supplied to industrial OEMs.
• Silicone Tubes (Tubos de silicona) Highly flexible silicone tubes resistant to extreme temperatures from -60°C to +200°C, designed for safe transport of fluids and gases in food, pharmaceutical, medical, automotive, and aerospace applications.
• Silicone Gaskets (Juntas de silicona) Sealing gaskets offering performance across extreme temperatures from -60°C to +250°C with chemical exposure and adverse-environment resistance, supplied to industrial OEMs needing reliable sealing.
• Silicone Profiles (Perfiles de silicona) Custom extruded silicone profiles for LED lighting systems and thermal/acoustic insulation, maintaining properties from -60°C to +250°C for demanding industrial applications.
• Silicone Cables (Cables de silicona) Silicone cables combining flexibility and thermal resistance from -60°C to +200°C for electrical installations in demanding environments, featuring fire-retardant properties and low smoke/toxic gas emissions meeting international fire safety standards.

Segments10 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• Wacker Chemie GmbHcoreStrategic or Co-development Partner · 1 January 2000Since 2000, SILAM has been the official HCR (Heat Curable Rubber) silicone mixer of Wacker Chemie GmbH for Spain and Portugal. This partnership enables SILAM to access high-quality silicone base materials and provides Wacker with a dedicated distributor partner for the Iberian market.
• Rubber Consortium and ACEDEminorStrategic or Co-development PartnerSILAM collaborates with various technology centers and participates in projects coordinated by the Rubber Consortium and ACEDE associations. These are industry associations that coordinate collaborative projects among member companies in the rubber and elastomer sector.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Wacker Chemie AG: One of the world's three largest silicone raw-material producers and SILAM's official HCR silicone base supplier/partner for Iberia since 2000. Operates the full silicone value chain — bases, compounds, and finished parts — making Wacker both an enabler and an above-SILAM competitive reference point.
• Shin-Etsu Chemical Co., Ltd. Global leader in silicones and semiconductor materials with deep reach into high-purity and industrial grades. Competes for the same automotive, healthcare, and electronics end-markets SILAM serves, but at vastly greater scale and global footprint.
• Momentive Performance Materials: Specialty silicones manufacturer offering HCR/LSR bases and finished parts across transportation, healthcare, and lighting. Overlaps with SILAM's product portfolio (tubes, gaskets, profiles, cables) and target verticals.
• Elkem ASA (Elkem Silicones): Vertically integrated silicones producer serving automotive, electronics, healthcare, and construction. Operates compounding and fabrication at scale in Europe and Asia, directly comparable to SILAM's HTV/mixing value proposition.
• Dow Inc. (Dow Silicones / DOWSIL): Global silicone franchise spanning fluids, bases, elastomers, and finished components. Competes with SILAM across food-contact, lighting, electronics, and rail via DOWSIL-branded products and distribution.

Direct peers

• SIMTEC Silicone Parts: Custom silicone molder offering LSR and HCR injection molding for medical, automotive, and industrial OEMs. Comparable niche to SILAM in custom-formulated, application-specific silicone components with regulatory end-markets.
• Stockwell Elastomerics: US-based fabricator of custom silicone sponge, gaskets, and profiles for outdoor enclosure, lighting, and transportation customers. Direct overlap with SILAM's LED-lighting, weather-resistant, and gasket product lines.
• Specialty Silicone Products, Inc. US-based custom silicone fabricator extruding tubes, profiles, and cords with FDA and USP-compliant grades — closely mirroring SILAM's compounding-plus-extrusion model and customization orientation for industrial customers.

Emerging players

• KCC Corporation: Korean specialty chemicals and silicones producer with growing presence in industrial silicone elastomers for automotive and electronics. A regional Asian emerging player whose capacity additions can pressure Iberian/European silicone pricing.

Others

• Avantor, Inc. Global laboratory and pharmaceutical chemicals distributor serving biopharma, healthcare, and research customers — an adjacent channel partner for SILAM's USP/Ph.Eur.-certified silicones into the pharma and laboratory verticals the company already targets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/about

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 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 SILAM S.A.