Reiss Manufacturing, Inc.

What Reiss Manufacturing, Inc. does

Reiss Manufacturing, Inc. is a fourth-generation, family-owned custom silicone rubber manufacturer headquartered in Blackstone, Virginia, operating under the Ronsil silicone division that has been active since 1946. The company produces custom-extruded and molded silicone components from a 110,000+ square foot facility, with annual capacity of approximately 40 million feet of extrusion and 2.5 million pounds of compounding, supported by a library of more than 750 proprietary silicone formulations. Its customer base spans Fortune 50 OEMs through early-stage startups across automotive, aerospace, defense, medical, energy, construction, and telecommunications end markets, including approved-supplier status with the U.S. Department of Defense.

The company holds ISO 9001:2015 certification, runs debt-free, and employs more than 50 people with an average tenure exceeding 10 years, reflecting deep institutional compounding and extrusion expertise. Recent product emphasis has been placed on EMI/RFI shielding silicones for electronics and defense applications, and the business has invested in a refreshed website, content marketing, and LinkedIn presence to support inbound demand from non-traditional buyers. Operationally, the company has historically narrowed its portfolio through divestitures of non-core businesses, including C. Reiss Coal Company in 1986 and the prior plastics operations.

The business model is project-based custom manufacturing: customers engage Reiss for tailored silicone compounds and extruded/molded geometries, with revenue generated per part, per tool, or per pound of compound rather than through subscription or licensing structures. Pricing is anchored to material formulation complexity, tooling, dimensional tolerance, and qualification requirements (notably medical, FDA-compliant, and defense work), with the Fortune 50 to startup range implying a mix of high-volume OEM programs and lower-volume specialty orders. Go-to-market is direct, supplemented by recent digital content and SEO investment rather than a distributor or rep network.

Name

Reiss Manufacturing, Inc.

Legal name

Reiss Manufacturing, Inc.

Website

https://reissmfg.com

Company type

Private

Founded year

1896

Operating status

Operating

Headcount range

11–50 employees

Short description

Reiss Manufacturing is a fourth-generation, family-owned custom silicone rubber compounder and extruder in Blackstone, Virginia, producing tailored extruded and molded silicone components from 750+ proprietary formulations for Fortune 50 OEMs, defense, medical, and industrial customers.

Ownership category

akta.pro rank

Product category

Custom Silicone Rubber Manufacturing

NAICS

Manufacturing (31-33)

SIC

Fabricated Rubber Products, Nec (3060)

akta.pro primary industry

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

Keywords

• Custom silicone rubber
• Silicone extrusion manufacturing
• Rubber molding services
• EMI/RFI shielding silicone
• Industrial rubber compounding

Headquarters

HQ city

Blackstone

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Silicone Product Manufacturing: Job-shop custom manufacturing model where products are made to customer specifications. Revenue generated through formulation, compounding, extrusion, molding, calendering, and fabrication services. Pricing based on custom quotes considering material costs, labor, and production scale.
2. Prototyping and Design Services: Design assistance and prototyping services including CAD software, 3D modeling, rapid prototyping tools (3D printing, CNC machining), and iterative testing to help customers develop products before full-scale production.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Reiss Manufacturing is a custom silicone rubber job-shop manufacturer that designs, compounds, extrudes, molds, calendars, fabricates, and finishes silicone and other elastomer products to customer specifications. Operating from a 110,000+ square foot U.S. facility in Blackstone, Virginia, the company serves Fortune 50 corporations, defense contractors, and startups with vertically integrated in-house capabilities, selling through a quote-based direct sales model rather than a catalog.

Product overview

Reiss Manufacturing, Inc. is a custom silicone rubber manufacturer offering vertically integrated manufacturing capabilities. The company operates as a single unified offering platform centered on custom silicone products, with core manufacturing services including Custom Formulating/Mixing & Milling, Extrusions, Rubber Molding, Calendering, and Fabricating. These core capabilities are supported by add-on modules including Prototyping & Design Assistance, Tooling, EMI/RFI Shielding, Color Matching, and Printing services. The company works with materials including Silicone Rubber (VMQ), Fluorosilicone (FVMQ), Viton® (FKM), EPDM Rubber, and Nitrile. All manufacturing is performed in-house from material formulation through fabrication, allowing complete control over quality, costs, and delivery timelines.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Formulating, Mixing & Milling

Quantifiable outcome

• 40 million feet annual extrusion capacity
• +4 more outcomes

Named customers4 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators7 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Elasto Proxy: Custom fabricator of rubber and silicone gaskets, seals, and weatherstripping for industrial, transportation, and defense customers. Very similar to Reiss in custom job-shop model, mid-market scale, and broad material/silicone focus.
• Marco Rubber & Plastics: Custom rubber and plastic component supplier of O-rings, seals, gaskets, and molded parts, with strong emphasis on engineering support and specialty materials. Comparable to Reiss in product breadth, custom focus, and industrial customer base.
• Daemar Inc. Canadian custom manufacturer of industrial seals, gaskets, and oil seals supplying OEMs across similar end markets including automotive, energy, and general industrial. Comparable in custom elastomer focus and mid-market scale.
• Lauren Manufacturing: U.S.-based custom manufacturer of dense and sponge rubber extrusions, gaskets, and seals serving similar industrial OEMs in appliances, lighting, transportation, and electronics. Similar size, vertical mix, and custom job-shop orientation to Reiss.
• Simolex Rubber Company: U.S. custom rubber and silicone extruder/molder producing gaskets, seals, and tubing for industrial OEM customers. Highly comparable in size, in-house tooling, and custom manufacturing orientation.
• Stockwell Elastomerics: U.S. custom manufacturer of silicone rubber components including gaskets, seals, and EMI/RFI shielding, serving similar industrial and electronics customers. Closely comparable in scale, custom job-shop model, and material focus to Reiss.

Broad incumbents

• Freudenberg Sealing Technologies: Major global supplier of sealing solutions, O-rings, and custom elastomer components for automotive, aerospace, and industrial markets. Overlaps with Reiss in precision custom silicone and fluorosilicone parts but is significantly larger with global operations.
• Trelleborg Sealing Solutions: Global manufacturer of precision seals, O-rings, and engineered polymer solutions across aerospace, automotive, and industrial markets. Comparable to Reiss as a custom engineered elastomer supplier, but at vastly larger scale and with broader product breadth and global manufacturing footprint.
• Parker Hannifin (Seal Group): Diversified industrial manufacturer whose Seal Group produces O-rings, custom elastomer seals, and engineered polymer solutions for aerospace, defense, and industrial customers. Overlaps with Reiss in high-spec custom sealing for demanding environments.

Others

• Wacker Chemical (Wacker Silicones): Major global silicone polymer and raw material supplier as well as custom silicone parts manufacturer. Adjacent to Reiss both as a potential raw material supplier and as a downstream competitor in custom molded and extruded silicone components.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Reiss-Manufacturing-Inc-
• LinkedInlinkedin.com/company/reiss-manufacturing-inc.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 Reiss Manufacturing, Inc.