What Kastas does

Kastaş Sızdırmazlık Teknolojileri (Kastas Sealing Technologies) is a Turkish manufacturer of hydraulic and pneumatic sealing elements headquartered at a 40,000 sqm integrated facility in the İzmir-Menemen Plastic Organized Industrial Zone. Founded in 1984, the company operates one of the world's largest sealing product catalogs — 15,000+ different sizes and 100+ standard designs — spanning hydraulic rod and piston seals, pneumatic rod and piston seals, static sealing elements, dust wipers, guiding elements/bearings, O-rings, and rotary shaft seals. Under the SmartSeal sub-brand, Kastas runs CNC-based rapid custom manufacturing capable of producing 100+ standard and unlimited custom designs from 50+ raw materials (PTFE, polyurethane CPU/TPU, engineering plastics, composites, and elastomers from European sources) within minutes and on a 24-hour emergency basis, with material processing up to 1500mm diameter.

Technically, Kastas positions on materials science rather than AI or software, maintaining material-grade certifications across food-contact (FDA, EU Regulation 10/2011, BfR, 3A Sanitary, ACS), drinking-water (WRAS, KTW, W270, DVGW B2/H3, BELGAQUA), pharmaceutical (USP Class VI), offshore (NORSOK M710), gas (EN549), and information security (ISO 27001 referenced) domains. Recent in-house innovations include the XT200 high-strength rod seal (2+ years of R&D), K19 heavy-duty piston series, FR200 low-friction rod seal, K17X and K518X compact piston sets, and the PU9414 high-temperature TPU compound.

Commercially, Kastas serves industrial OEMs in construction machinery, mobile hydraulics, agricultural machinery, mining equipment, hydraulic presses, iron and steel, plastic injection molding, gas dampers, and pressure washers. Distribution runs through a global network of authorized distributors (e.g., Alpan Hidrolik in Turkey), a proprietary Seal-Link B2B e-commerce portal for product search, inventory check, ordering, and shipment tracking, and direct European sales via Kastaş Europe as a regional headquarters. Pricing is quote-based and undisclosed. The company is privately held by its founders/management with no disclosed external investors; Technology Director Ozan Devlen currently serves as President of the European Sealing Association, anchoring the company's industry positioning across Europe, Asia, and the Americas.

Name

Kastas

Legal name

Kastaş Sızdırmazlık Teknolojileri San. ve Tic. A.Ş.

Website

https://kastas.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Kastas is a Turkish manufacturer of hydraulic and pneumatic sealing elements — offering 15,000+ sizes and 100+ standard designs — that supplies industrial OEMs in construction, agriculture, mining, mobile hydraulics, and heavy machinery through a global distributor network, a proprietary B2B portal (Seal-Link), and custom CNC manufacturing (SmartSeal).

Ownership category

akta.pro rank

Product category

Industrial Hydraulic and Pneumatic Sealing Solutions

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991)

SIC

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

akta.pro primary industry

Blow-Molded Medical & Laboratory Containers (IMANAGAI)

akta.pro secondary industry

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

Keywords

• Hydraulic sealing elements
• Pneumatic sealing solutions
• Industrial sealing manufacturer
• Custom CNC machined seals
• Rod and piston seals

Headquarters

HQ city

Menemen

Offices1 record

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, O-rings, dust wipers, guiding elements, and rotary seals. Products sold through authorized distributors and direct B2B portal.
2. SmartSeal Custom Manufacturing: Custom CNC-machined sealing solutions produced on-demand for customer-specific requirements, serving emergency repair needs and specialized applications with rapid turnaround.
3. SmartSeal Material Solutions: Sale of high-performance polymer semi-finished products (tubes and rods) in PTFE, Polyurethane, and Composites for industrial applications.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Kastas manufactures hydraulic and pneumatic sealing elements (rod seals, piston seals, O-rings, dust wipers, guiding elements, rotary shaft seals) and provides custom-made sealing solutions through its SmartSeal CNC machining service. The company operates the Seal-Link B2B e-commerce portal for direct ordering and serves industrial B2B customers in construction, agriculture, mining, mobile hydraulics, iron and steel, plastic injection, gas dampers, and pressure washing applications.

Product overview

Kastaş Sızdırmazlık Teknolojileri (Kastas Sealing Technologies) is a manufacturer of hydraulic and pneumatic sealing solutions with one of the world's largest product programs, offering over 15,000 different sizes and more than 100 standard seal designs. The core product portfolio includes: Hydraulic Rod Seals (boğaz keçeleri), Hydraulic Piston Seals (piston keçeleri), Hydraulic Piston-Rod Seals, Pneumatic Rod Seals, Pneumatic Piston Seals, Static Sealing Elements, Dust Seals/Wipers (toz keçeleri), Guiding Elements/Bearings (yataklama elemanları), O-rings, and Rotary/Rotating Shaft Seals (döner mil keçeleri). Additional product sub-brands include SmartSeal (custom CNC-machined sealing elements for urgent and special needs) and Seal-Link (B2B online sales portal for ordering and stock management). Products serve industries including construction machinery, mobile hydraulics, agricultural machinery, hydraulic presses, iron and steel, plastic injection molding, mining equipment, gas struts, and pressure washers. The company operates from a 40,000 m² production facility in Izmir-Menemen Plastic OSB, Turkey.

Differentiator

Problem solved

Functional benefit

Brands

• SmartSeal: Custom-made machined seals division using CNC technology for producing standard and custom-designed sealing elements, offering 24-hour emergency production capability with over 100 standard and unlimited custom designs from various high-performance materials including PTFE, polyurethane, and composites.
• Seal-Link

Products and services

• Hydraulic Rod Seals (Hidrolik Boğaz Sızdırmazlık Elemanları) Hydraulic rod sealing elements for preventing fluid leakage in hydraulic cylinder rods, offered in single-acting, double-acting, heavy-duty, and low-friction designs for industrial machinery OEMs and MRO customers.
• Hydraulic Piston Seals (Hidrolik Piston Sızdırmazlık Elemanları)
• Hydraulic Piston-Rod Seals (Hidrolik Piston-Boğaz Sızdırmazlık Elemanları)
• Pneumatic Rod Seals (Pnömatik Boğaz Sızdırmazlık Elemanları)
• Pneumatic Piston Seals (Pnömatik Piston Sızdırmazlık Elemanları)
• Static Sealing Elements (Statik Sızdırmazlık Elemanları)
• Dust Seals and Wipers (Toz Keçeleri)
• Guiding Elements and Bearings (Yataklama Elemanları)
• O-Rings (O-ringler)
• Rotary Shaft Seals (Döner Mil Keçeleri)
• SmartSeal Custom Sealing Manufacturing Service
• Seal-Link B2B Online Sales Portal
• XT200 High-Strength Rod Seal (XT200 Yüksek Dayanımlı Boğaz Keçesi) High-strength rod seal developed through 2+ years of R&D, designed for demanding applications requiring both yield strength and low leakage.
• K19 Heavy-Duty Piston Seal (K19 Ağır Hizmet Piston Keçesi) Heavy-duty piston seal consisting of an elastomer ring, PTFE ring, and two thermoplastic support rings, suitable for heavy-duty hydraulic cylinders.
• PU9414 High Temperature TPU Material Next-generation high-temperature TPU polyurethane material developed by Kastas combining excellent viscoelastic properties and extrusion resistance for high-temperature sealing applications.

Quantifiable outcome

• Custom sealing elements produced within minutes via CNC machining
• +2 more outcomes

Segments9 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered high, regional, minor and core.

• European Sealing Association (ESA)highStrategic or Co-development Partner · 15 April 2026Kastaş participates as an active member and ESA Presidency held by Technology Director Ozan Devlen. Company contributes to ESA working groups on production facility safety and environmental impact reduction, PFAS developments, digital product passports, and university-industry collaborations.
• Alpan HidrolikregionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Turkey. Collaborated with Kastaş to organize training events for industry professionals, including sessions at Eskişehir Chamber of Commerce with 100+ participants from different sectors.
• EHEDG TürkiyeminorStrategic or Co-development PartnerKastaş participated in the 4th Hygienic Design Day organized by EHEDG Türkiye in İzmir, bringing together over 100 professionals from food manufacturers and food machinery producers.
• Seal-LinkcoreTechnology or IntegrationB2B e-commerce platform developed by Kastaş enabling product search, inventory control, ordering, shipment tracking, and order history. Built on modern infrastructure supporting all purchasing processes for customers.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• NOK Corporation: NOK Corporation is a Japanese global manufacturer of oil seals, O-rings, and hydraulic/pneumatic sealing products, with a product portfolio and end-market exposure closely aligned with Kastaş's industrial sealing business.
• Trelleborg Sealing Solutions: Trelleborg's Sealing Solutions division is a global leader in polymer-engineered seals for hydraulic, pneumatic, and fluid power applications, directly overlapping with Kastaş's core product portfolio across hydraulic rod seals, piston seals, and O-rings.
• Dichtomatik: Dichtomatik is a European distributor and manufacturer of technical sealing products including O-rings, hydraulic seals, and pneumatic seals, with comparable product assortment and end-market focus to Kastaş.
• Greene Tweed: Greene Tweed is a US-based manufacturer of high-performance seals and engineered components for fluid handling, semiconductor, and industrial applications, with overlapping thermoplastic and elastomer seal technologies compared to Kastaş.
• Hallite Seals: Hallite Seals is a UK-based specialist manufacturer of hydraulic cylinder seals, piston seals, and wiper seals — a direct niche competitor to Kastaş in industrial hydraulic sealing with comparable product focus and customer base.

Broad incumbents

• Freudenberg Sealing Technologies: Freudenberg Sealing Technologies is a global manufacturer of sealing solutions for automotive, industrial, and fluid power applications, with comparable radial shaft seals, O-rings, and hydraulic/pneumatic seal products serving overlapping end markets.
• Parker Hannifin: Parker Hannifin is a global motion and control technologies leader with a comprehensive seal portfolio for hydraulic and pneumatic systems, serving the same construction, agriculture, and industrial OEM customers as Kastaş but at much larger scale.
• SKF Seals: SKF, primarily known for bearings, also produces a comprehensive range of sealing solutions including hydraulic seals, rotary shaft seals, and cassette seals, with direct product overlap in the same end applications as Kastaş.
• Eriks (Sealing Products): Eriks is a European industrial service provider and distributor of sealing products, gaskets, and rubber technology, competing with Kastaş in the European MRO and OEM sealing market with a broader industrial MRO portfolio.

Emerging players

• Dexmet (Sealing Division): Dexmet manufactures specialized sealing and gasket products for industrial applications using expanded metals and polymers, representing an emerging competitor in custom-engineered sealing solutions comparable to Kastaş's SmartSeal offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/kastassealing
• Instagraminstagram.com/kastastechnologies
• Xx.com/kastas_seal
• LinkedInlinkedin.com/company/kastassealingtechnologies

Compliance15 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 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 Kastas