What Trostel does

Trostel is a U.S.-based manufacturer of precision molded seals, operating as a wholly-owned sub-brand of ParkOhio Holdings Corp. (NASDAQ: PKOH) within the parent's Assembly Components division. The company specializes in rubber and plastic molded products serving OEM manufacturers across the automotive, appliance, agricultural, and industrial sectors, with applications ranging from automobiles and commercial trucks to forklifts, engines, and industrial machinery. Production is conducted via injection and compression molding, supported by design engineering, finish machining, laser cutting and welding, internal braze furnaces, part assembly, and testing capabilities. The company was founded in 1858 and is headquartered in Lake Geneva, Wisconsin, with a stated headcount of 251–500 employees.

Trostel's commercial model is that of a B2B OEM component supplier, generating revenue through the manufacture and sale of precision molded seals to enterprise manufacturers rather than to end consumers. Pricing and contracts are negotiated directly with OEM customers and are not publicly disclosed; the company competes on engineering quality, precision, and reliability of the seal components that go into final product assembly. Distribution is handled through ParkOhio's enterprise sales organization, with global reach supported by the parent's 25+ manufacturing facilities across the United States, Mexico, China, England, and the Czech Republic. The Assembly Components division as a whole reports $580MM+ in sales, 3,000+ employees worldwide, and notes that approximately 45% of division-level sales are single-sourced, indicating that a significant share of Trostel's revenue is likely embedded in customer Bill of Materials under long-term supply arrangements.

Within the Assembly Components portfolio, Trostel is co-positioned with six sibling brands (ATM, Bates, EuroPower, Fluid Routing Solutions, hydraPower Dynamics, and ParkOhio Global Rubber & Plastics) that together cover metallic tube manipulation, hose extrusion, rubber and plastic molding, hose assemblies, and low/high-pressure fuel rails for gasoline port fuel injection and direct injection systems. This portfolio architecture allows ParkOhio to cross-sell complementary components into OEM final assembly accounts. No independent funding, M&A, or strategic actions attributable to Trostel as a standalone entity are disclosed; all strategic posture is governed at the ParkOhio parent level.

Name

Trostel

Legal name

Trostel

Website

https://trostel.com

Company type

Private

Founded year

1858

Operating status

Operating

Headcount range

251–500 employees

Short description

Trostel is a ParkOhio-owned U.S. manufacturer of precision molded rubber and plastic seals, supplying OEM customers in the automotive, appliance, agricultural, and industrial sectors through injection and compression molding. The company operates as a sub-brand within ParkOhio's $580MM+ Assembly Components division, leveraging 25+ global manufacturing facilities.

Ownership category

akta.pro rank

Product category

Precision Molded Seals Manufacturing

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991), Other Rubber Product Manufacturing (32629), Rubber Product Manufacturing (3262)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Fabricated Rubber Products, Nec (3060)

akta.pro primary industry

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

akta.pro secondary industries

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI), Automotive Weatherseals, Gaskets & Sealing Systems Manufacturing (Door/Window/Trunk Seals) (IMACAKAI), Expansion Joints, Flexible Connectors & Compensators (Rubber/Fabric) (IMANALAF)

Keywords

• Precision molded seals
• Rubber compounding
• OEM seal components
• Molded rubber products
• Automotive sealing solutions

Headquarters

HQ city

Lake Geneva

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Molded Seal Products: Trostel generates revenue through the manufacture and sale of precision molded seals to OEM customers in automotive, appliance, agricultural, and industrial sectors. As a component supplier, revenue is derived from long-term supply contracts with manufacturers.

Go-to-market motion1 record

Distribution channels1 record

Core offering

Trostel manufactures and sells precision molded rubber and plastic seals directly to OEM customers in the automotive, appliance, agricultural, and industrial sectors. The company produces these sealing components through injection and compression molding processes, supporting final assembly of automobiles, agricultural equipment, commercial trucks, forklifts, engines, and industrial machinery. Operating as a brand within ParkOhio's Assembly Components division, Trostel leverages the parent's global manufacturing footprint and complementary rubber, plastic, hose, and fluid routing capabilities.

Product overview

Trostel operates as a sub-brand within ParkOhio's Assembly Components division, offering precision molded seals. The company is positioned as a global leader serving the automotive, appliance, agricultural, and industrial industries. Within the broader Assembly Components portfolio, Trostel's precision molded seals complement other ParkOhio brands including ATM (stainless steel fuel system components), Bates (hose assemblies and gaskets), EuroPower (hoses and fittings), Fluid Routing Solutions (engineered components), hydraPower Dynamics (fluid power solutions), and ParkOhio Rubber and Plastics — all providing complementary rubber, plastic, hose, and fluid routing products for OEM final assembly applications.

Differentiator

Problem solved

Functional benefit

Brands

• Trostel: A global leader in precision molded seals for the automotive, appliance, agricultural and industrial industries.

Products and services

• Trostel Precision Molded Seals Precision molded rubber and plastic seals manufactured through injection and compression molding processes, supplied to OEM manufacturers for use in the final assembly of automobiles, agricultural equipment, commercial trucks, forklifts, engines, and industrial machinery. The offering is targeted at OEM customers in the automotive, appliance, agricultural, and industrial sectors and includes supporting design engineering, finish machining/laser cutting and welding, internal braze furnaces, part assembly, and testing services.

Named customers4 records

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators5 records

Recent moves3 records

Expansion highlights2 records

Direct peers

• ElringKlinger: German automotive supplier with strong sealing technology and gasket portfolio for powertrain and chassis applications. Comparable to Trostel in OEM-embedded molded sealing solutions for vehicle manufacturers.
• Cooper Standard Automotive: Tier-1 automotive supplier specializing in sealing, fluid handling, and anti-vibration systems. Directly overlaps with Trostel's automotive weatherseals, gaskets, and molded rubber product offering for OEM vehicle assembly.
• Hutchinson (TotalEnergies subsidiary): Global manufacturer of rubber and polymer products including precision molded seals, anti-vibration components, and fluid systems for automotive, aerospace, and industrial customers. Closely mirrors Trostel's elastomer molding and OEM customer base.
• Freudenberg Sealing Technologies: Division of Freudenberg Group focused on seals and vibration control technology, serving automotive and industrial OEMs globally. Closely mirrors Trostel's precision-molded seal offering and OEM-embedded business model.
• Greene Tweed & Co. Manufacturer of high-performance elastomeric seals, gaskets, and custom molded rubber components for industrial, aerospace, and oil & gas markets. Comparable to Trostel in custom molded elastomer seals for harsh-environment OEM applications.
• Trelleborg AB: Global leader in engineered polymer solutions, including precision molded rubber seals for automotive, industrial, and agricultural OEMs. Directly comparable to Trostel in product category, customer base, and injection/compression molding capabilities.

Broad incumbents

• Parker Hannifin: Diversified motion and control technologies giant with a substantial sealing solutions portfolio. Overlaps with Trostel in precision molded elastomer seals for industrial and automotive OEMs but operates across a much broader product breadth.
• Dana Incorporated: Tier-1 automotive supplier of sealing and thermal-management technologies alongside driveline products. Overlaps with Trostel in molded sealing components for automotive OEMs but serves a much broader drivetrain portfolio.
• SKF Group: Global bearings and seals manufacturer serving automotive and industrial OEMs. Comparable to Trostel in industrial sealing and rotating-equipment markets, though SKF's bearings franchise is much larger.

Emerging players

• Flowserve Corporation: Industrial flow control specialist with engineered sealing solutions for pumps and process equipment. Adjacent to Trostel's industrial machinery sealing applications, though Flowserve is primarily known for pumps and valves rather than OEM elastomer seals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/trostel-ltd

Revenue estimate

Valuation estimate

Number of profiles

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 Trostel