What Kastaş Sızdırmazlık Teknolojileri does

Kastaş Sızdırmazlık Teknolojileri is a privately held Turkish manufacturer of hydraulic and pneumatic sealing elements, established in 1984 and headquartered in a 40,000 m² production and management facility at the Menemen Plastic Specialization Organized Industrial Zone in İzmir. The company produces a broad catalog spanning over 100 standard designs and more than 15,000 size varieties, including hydraulic rod and piston seals, pneumatic rod and piston seals, static seals, dust seals/wipers, guiding elements, O-rings, and rotary seals. Manufacturing is grounded in compression molding, CNC machining, and advanced polymer processing using elastomer, PTFE, polyurethane, and composite materials. Proprietary innovations include the K19 heavy-duty piston seal series, the K17X high-performance piston seal (FEA-designed for 400 bar yield strength), the K518X compact piston seal, the FR200 low-friction rod seal, and the PU9414 high-temperature thermoplastic polyurethane compound. Two sub-brands extend the offering: SmartSeal delivers custom CNC-machined seals with a 24-hour response capability and machining up to 1,500 mm diameter, while Seal-Link is a B2B e-commerce portal for product search, stock checks, online ordering, and shipment tracking.

The company operates a multi-channel B2B distribution model combining a global network of authorized dealers, a wholly-owned European subsidiary (Kastaş Europe, Germany), direct enterprise sales via SmartSeal, and the Seal-Link portal. End-markets served include construction machinery, mobile hydraulics, agricultural equipment, hydraulic presses, iron and steel, plastic injection, mining equipment, gas springs, and high-pressure cleaners across Turkey, Europe, China, India, the United States, and Russia. Revenue is generated through quote-based hardware sales of standard products and custom-engineered sealing solutions, with multi-year contracts in some accounts. The company is privately held as a Turkish Anonim Şirket (joint stock company), with no disclosed institutional investors, and holds ISO 27001 certification for information security management. Leadership includes Technology Director Ozan Devlen, who concurrently serves as President of the European Sealing Association, anchoring Kastaş's role in European sealing-industry standards development.

Name

Kastaş Sızdırmazlık Teknolojileri

Legal name

Kastaş Sızdırmazlık Teknolojileri Sanayi ve Ticaret Anonim Şirketi

Website

https://kastas.com.tr

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

101–250 employees

Short description

Kastaş Sızdırmazlık Teknolojileri manufactures hydraulic and pneumatic sealing elements with 100+ standard designs and 15,000+ size varieties, serving construction, mobile hydraulics, agriculture, mining, and industrial sectors globally via authorized dealers, custom CNC machining (SmartSeal), and a B2B portal (Seal-Link).

Ownership category

akta.pro rank

Product category

Industrial Sealing Components

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industry

Seals, Gaskets & O-Rings (Industrial Elastomer) (IMANALAC)

Keywords

• Hydraulic seals
• Pneumatic seals
• Sealing technology
• Custom machined seals
• Industrial seals

Headquarters

HQ city

İzmir

HQ country

Türkiye

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Standard Sealing Products: Sale of standard hydraulic and pneumatic sealing elements including rod seals, piston seals, dust seals, O-rings, guiding elements, and rotary seals. Products are sold through authorized distributors and direct B2B portal.
2. SmartSeal Custom Machined Seals: Custom-made machined sealing solutions produced via CNC technology for urgent repair-maintenance needs and customer-specific designed sealing solutions. Delivered within 24 hours for rapid demand response.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Kastaş manufactures hydraulic and pneumatic sealing elements including rod seals, piston seals, dust seals, O-rings, guiding elements, and rotary seals from elastomer, PTFE, polyurethane, and composite materials. The company offers over 100 standard product designs with 15,000+ size variations plus custom CNC-machined seals via its SmartSeal division with 24-hour response capability. Products are sold through authorized global distributor networks and the Seal-Link B2B e-commerce portal to industrial OEM and MRO customers.

Product overview

Kastaş Sızdırmazlık Teknolojileri is a sealing technology manufacturer offering a comprehensive portfolio of over 100 standard product designs with more than 15,000 size variations for hydraulic and pneumatic sealing applications. The core product portfolio includes hydraulic rod seals, hydraulic piston seals, hydraulic piston-rod seals, pneumatic rod seals, pneumatic piston seals, static seals, dust seals/wipers, guiding elements, O-rings, and rotary seals. The company operates two key sub-brands: SmartSeal (custom CNC-machined seals responding to urgent and special needs on a 24-hour basis, including PTFE, polyurethane, and composite material solutions) and Seal-Link (B2B online sales portal for product search, stock control, ordering, and shipment tracking). Innovation products include the K19 Heavy Duty Piston Seal Series, K49 Piston Seal, FR200 Low Friction Rod Seal, K17X High Performance Piston Seal, K518X High Performance Compact Piston Seal, and PU9414 High Temperature Premium TPU. The company serves construction machinery, agricultural equipment, mobile hydraulics, industrial, mining, and iron-steel sectors.

Differentiator

Problem solved

Functional benefit

Brands

• SmartSeal: Custom-made machined seals - CNC-machined sealing solutions offering over 100 standard and unlimited custom-designed sealing elements produced from various raw materials within minutes, responding to emergency and special customer needs on a 24-hour basis.
• Seal-Link

Products and services

• Hydraulic Rod Seals

Quantifiable outcome

• 40+ years of industry experience with global customer base
• +2 more outcomes

Named customers2 records

Segments9 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• European Sealing Association (ESA)coreStrategic or Co-development Partner · 1 April 2026Ozan Devlen, Technology Director of Kastaş, serves as President of ESA representing 62 member companies across Europe. Kastaş actively participates in ESA working groups addressing PFAS developments, digital product passports, young engineer recruitment, and university-industry collaborations. ESA provides platform for cooperation, knowledge sharing, and forward-looking strategic dialogue in the European sealing industry.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Parker Hannifin: Parker's Industrial Seals division (formerly Chrometics) provides hydraulic and pneumatic sealing solutions to construction, mobile equipment, and industrial OEMs globally, overlapping directly with Kastaş's primary segments.
• Trelleborg Sealing Solutions: Trelleborg's Sealing Solutions division is a global leader in polymer-engineered seals for hydraulic, pneumatic, and rotary applications, serving the same industrial customer base as Kastaş with a broader geographic and product footprint.
• Freudenberg Sealing Technologies: Freudenberg Sealing Technologies (formerly Simrit) is one of the world's largest sealing product manufacturers, with deep OEM relationships in automotive and industrial hydraulics that directly overlap Kastaş's served markets.
• SKF Seals: SKF's sealing solutions business supplies radial shaft seals, hydraulic seals, and custom sealing solutions for industrial applications, competing with Kastaş in mobile hydraulic and industrial machinery segments.

Direct peers

• Greene Tweed: Greene Tweed manufactures engineered sealing products for fluid handling, including hydraulic and pneumatic seals using PTFE, elastomers, and composites — directly comparable material technology and end-market focus to Kastaş.
• KACO GmbH & Co. KG: KACO is a German manufacturer of elastomer sealing products including rotary shaft seals and hydraulic seals, serving automotive and industrial customers with comparable polymer material expertise and product portfolio.
• NOK Corporation: NOK is a major Japanese manufacturer of oil seals, O-rings, and hydraulic/pneumatic sealing products, serving automotive and industrial machinery customers globally with comparable elastomer- and PTFE-based product technology.
• Hallite Seals International: Hallite (now part of Trelleborg) specialized in hydraulic cylinder seals including rod, piston, and wiper seals, targeting the same construction machinery and mobile hydraulic OEMs as Kastaş.

Regional players

• GAPI Sızdırmazlık Elemanları: GAPI is a Turkish manufacturer of O-rings, gaskets, and rubber sealing products, serving domestic and export markets with directly comparable product technology and serving as a regional competitor in Kastaş's home market.

Emerging players

• Dichtomatik / FKM Industrial: Dichtomatik distributes and manufactures industrial seals, O-rings, and sealing kits for hydraulic and pneumatic applications, serving a comparable MRO and OEM customer base with overlapping product categories.

Market position

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/kastassizdirmazlikteknolojileri

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

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 Kastaş Sızdırmazlık Teknolojileri