What Rubber Industries does

Rubber Industries, Inc. (also known as RII) is a privately held, family-owned custom elastomer manufacturer founded in 1968 and now in its third generation of family ownership. The company produces custom molded rubber, silicone, and liquid silicone rubber (LSR) parts using injection, transfer, compression, and liquid injection molding processes from a 5-acre owned campus in Shakopee, Minnesota, supplemented by a manufacturing partnership in Asia. Core technical capabilities include in-house mold building with 4130 steel tooling, rubber-to-metal bonding and overmolding (approximately one-third of revenue), a 2,000+ custom elastomer formula library mixed by in-house chemists, and rapid prototyping programs (ProtoFast, LIMFAST) that deliver steel tooling and parts in as little as one day.

The company operates 24x7x365 and serves enterprise customers across medical (its largest segment), automotive, industrial, consumer, defense contracting, and oil and gas. Named customers include Tesla, General Motors, Toyota, Ford, DuPont, 3M, Boston Dynamics, Disney, and Bell. The business holds ISO 9001:2015 quality certification and ITAR registration, and produces FDA-compliant medical and food-grade silicone parts, enabling participation in regulated supply chains. Pricing is quote-based with no hidden fees; prototype tooling starts around $850 and production tooling averages around $800 per mold, with customers owning tooling post-purchase.

Revenue is generated through one-time custom manufacturing orders, tooling sales, and custom compound formulation services, scaling from prototype quantities to tens of millions of parts annually. The go-to-market is sales-led and direct, driven by website quote requests, file upload RFQs, phone contact, and trade-show presence. Distribution is direct from the Minneapolis facility and Asian partner network to global customers. Capital allocation over the past four years has emphasized domestic plant modernization while extending capacity offshore through the Asian manufacturing partnership.

Name

Rubber Industries

Legal name

Rubber Industries, Inc.

Website

https://rubberindustries.com

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

1–10 employees

Short description

Rubber Industries is a family-owned custom manufacturer founded in 1968, producing molded rubber, silicone, and LSR parts from its Shakopee, Minnesota facility and Asian partners. It serves enterprise customers in medical, automotive, industrial, defense, and consumer markets.

Ownership category

akta.pro rank

Headquarters

HQ city

Shakopee

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Molded Parts Manufacturing: One-time transaction-based manufacturing of custom rubber, silicone, and LSR parts. Revenue generated from production orders ranging from prototype quantities to tens of millions of parts annually. Customers own tooling after purchase.
2. Tooling and Mold Building: Custom steel tooling manufacturing services. Steel molds starting at $850 for prototyping services. Production tooling typically costs around $800, built to last tens of thousands of cycles.
3. Custom Compound Formulation: In-house chemists create custom elastomer formulations to meet specific performance requirements including hardness, fluid resistance, abrasion resistance, and color matching.
4. Material Sourcing and Import: Sourcing millions of parts annually from Asian partners in addition to domestic USA manufacturing.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

Rubber Industries manufactures custom molded rubber, silicone, and Liquid Silicone Rubber (LSR) parts using injection, transfer, and compression molding processes. Core offerings include rubber-to-metal bonding, overmolding, rapid prototyping (ProtoFast), and in-house steel tooling/mold building. The company also provides custom compound formulation with over 2,000 in-house mixed elastomer formulas and partners with Asian manufacturers for expanded capacity.

Product overview

Rubber Industries is a custom rubber and silicone molding manufacturer offering a comprehensive suite of services under one roof. The company provides custom molded rubber, silicone, and liquid silicone rubber (LSR) parts using injection, transfer, and compression molding processes. Core offerings include rubber-to-metal bonding, overmolding, rapid prototyping (ProtoFast), and in-house tooling/mold building. The product portfolio encompasses specialty materials including EPDM, Nitrile NBR, Neoprene, FKM/Viton, HNBR, SBR, Butyl, and Silicone. The company operates from a 5-acre Minneapolis campus and partners with Asian facilities for additional capacity. Services span multiple industries including medical (largest segment), automotive, industrial, consumer, and defense contracting.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Rubber Molding Custom rubber molding service using injection, transfer, and compression methods to produce custom molded rubber parts in elastomers including EPDM, Nitrile NBR, Neoprene, FKM/Viton, HNBR, SBR, Butyl, and Silicone. Targeted at OEM customers in medical, automotive, industrial, consumer, and defense sectors.
• Rubber Injection Molding High-volume rubber injection molding service using multiple modern injection presses with shot sizes up to 15 pounds for fast, economical production of large quantities of custom rubber parts. For OEM customers requiring large-volume production runs.
• Transfer Molding Transfer molding service for medium to high precision rubber components, suitable for custom colors and complex part geometries. For customers needing precision parts in custom colors.
• Compression Molding Compression molding service for producing high-strength custom molded components, suitable for simple designs and low-volume production. For customers needing high-strength, simpler-design parts.
• Silicone Molding Custom silicone injection molding, transfer, and compression molding services for producing silicone parts in various formulations. For OEMs requiring silicone components across medical, food-grade, and industrial applications.
• LSR - Liquid Silicone Rubber Molding Liquid Silicone Rubber (LSR) molding using Liquid Injection Molding (LIM) process for both clear and colored parts, including F-LSR for high-performance applications. For customers needing high-precision, high-purity silicone parts.
• Medical Silicone Molding Medical-grade silicone molding services for the medical industry, including FDA-compliant materials and critical tolerance manufacturing. For medical device OEMs and healthcare equipment manufacturers.
• Rubber-to-Metal Bonding Expert rubber-to-metal bonding and silicone-to-metal bonding services using chemical bonding during vulcanization, bonding elastomers to stainless steel, aluminum, brass, and other metals. For OEMs in automotive, industrial, and defense sectors.
• Rubber to Metal Overmolding Overmolding services encapsulating rubber and silicone onto metal substrates and plastics including glass-filled nylon and polycarbonates, for demanding applications. For OEMs needing composite rubber-plastic or rubber-metal parts.
• Rapid Prototypes (ProtoFast) Fast prototyping service (ProtoFast) producing prototype tooling and parts in as little as 1-15 days using real 4130 steel molds rather than aluminum. For OEMs needing quick-turn prototypes with production-quality materials.
• Tooling and Mold Building In-house custom tooling and mold building using 4130 steel for production tools up to 26" x 40", with hundreds of tools produced annually. For customers needing durable steel tooling for high-volume production.
• High Volume Production High-volume custom rubber and silicone molding production capabilities with tens of millions of parts manufactured annually across USA and Asian partner facilities. For OEMs needing large-scale production runs.
• Custom Silicone Gaskets Custom silicone gasket manufacturing for sealing applications in food, medical, and industrial uses. For OEMs needing FDA-compliant or industrial-grade silicone gaskets.
• Custom Die Cut Rubber Parts Die-cut rubber parts using custom cutting dies to stamp out gaskets and other parts quickly from rubber sheets. For customers needing flat, stamped rubber components at speed.
• Custom Rubber Grommets Custom molded rubber grommets for protecting wires, cables, and components in various applications. For OEMs across automotive, industrial, and electronics.
• Silicone Plugs and Caps Custom silicone plugs and caps for masking, protection, and sealing applications. For manufacturers performing powder coating, plating, or finishing processes.
• FKM/Viton Products FKM (Viton) fluoroelastomer custom molded parts with high heat resistance and chemical exposure resistance, including Viton O-Rings. For OEMs in automotive, oil & gas, and chemical processing requiring high-performance sealing.
• EPDM Custom Molded Rubber

Quantifiable outcome

• Prototype tooling and 10,000+ custom silicone parts shipped in one week
• +3 more outcomes

Named customers9 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

Feature5 records

Partnerships

One partnership is on record.

• Asian Manufacturing Partners (China)coreOEM/ Whitelabel/ Licensing PartnerStrategic partnership with manufacturers in China and Asia for custom molded rubber, silicone, and LSR. Provides expanded capacity for high-volume production and rapid tooling. Company sources millions of parts annually from overseas partners while maintaining USA-based quality control and engineering.

Scale indicators10 records

Recent moves6 records

Expansion highlights5 records

Market position

Weaknesses5 records

Competitive moat6 records

Customer concentration

• Facebookfacebook.com/rubberindustriesinc
• LinkedInlinkedin.com/company/rubber-industries-inc

Compliance2 records

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 Rubber Industries