Verified Nov 2026
Bearings & Components
·
Rock Island, Illinois
·
Since 1977
Inpro/Seal LLC manufactures permanent bearing protection and shaft sealing solutions for rotating equipment in automotive, electric-vehicle, renewable-energy, industrial, and consumer-goods sectors. Based in Rock Island, Illinois and founded in 1977, the company employs 100–200 people. The firm recently introduced a next-generation bearing isolator product line and expanded its smart shaft grounding portfolio to address contamination ingress and equipment reliability.
Inpro/Seal LLC at a glance
Revenue
$10-50M
Est. band
Employees
100-200
Founded
1977
Headquarters
Rock Island, Illinois
Certifications
ISO 9001
Import activity
64
Industries
Automotive
Electric Vehicles
Renewable Energy
Industrial Equipment
Consumer Goods
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
64
Named foreign suppliers
5
Top origins
Taiwan · China · South Korea · Poland
Shared foreign counterparties do not establish that these companies buy from Inpro/Seal LLC.
What this tells a buyer
The company sources components from suppliers in Taiwan, China, South Korea, and Poland, with two primary Taiwanese suppliers accounting for over 1,000 combined shipments.
Inpro/Seal designs and manufactures bearing isolators, shaft seals, high-temperature seals, floating brush seals, and shaft grounding systems, all certified to ISO 9001.
The company is privately held with an estimated revenue band of $10–50 million and holds the original bearing isolator patent developed more than 30 years ago.
Source: US customs bill-of-lading records and public filings · Last verified Nov 06, 2026
STABILITY SIGNALS
Established & active
49 years in operation (founded 1977).
64 US import shipments on record.
Holds ISO 9001 certification(s) per public sources.
Overview
Inpro/Seal LLC manufactures permanent bearing protection and shaft sealing solutions for rotating equipment in automotive, electric-vehicle, renewable-energy, industrial, and consumer-goods sectors. Based in Rock Island, Illinois and founded in 1977, the company employs 100–200 people. The firm recently introduced a next-generation bearing isolator product line and expanded its smart shaft grounding portfolio to address contamination ingress and equipment reliability.
At a glance
Attribute | Detail |
|---|---|
Founded | 1977 |
Headquarters | Rock Island, Illinois |
Employees | 100-200 |
Revenue | $10-50M (estimated) |
Primary capability | Bearings & Components |
Certifications | ISO 9001 |
What Inpro/Seal LLC makes
Inpro/Seal designs and manufactures bearing isolators, shaft seals, high-temperature seals, floating brush seals, and shaft grounding systems, all certified to ISO 9001.
Products and capabilities described on the company's own site include Machining, Bearing, Seal, Pump, Electric Motor, Aluminum (source: inpro-seal.com).
Certifications
Inpro/Seal LLC is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — inpro-seal.com
Trade and customs footprint
The company sources components from suppliers in Taiwan, China, South Korea, and Poland, with two primary Taiwanese suppliers accounting for over 1,000 combined shipments. US customs bill-of-lading records list 64 inbound shipments across 5 foreign suppliers, with top origins including Taiwan · China · South Korea · Poland.
Latest developments
2026-05-04 — Introducing the Next Generation Bearing Isolator - Inpro/Seal (inpro-seal.com)
2026-05-03 — Smart Shaft Grounding Portfolio Provides Comprehensive Bearing Protection - Inpro/Seal (inpro-seal.com)
2025-06-26 — Inpro/Seal News and Events (inpro-seal.com)
Company details
The company is privately held with an estimated revenue band of $10–50 million and holds the original bearing isolator patent developed more than 30 years ago. Inpro/Seal LLC was founded in 1977, has an estimated 100-200 employees, and is headquartered in Rock Island, Illinois. On the LightSource stability read it is rated "Established & active": 49 years in operation (founded 1977). 64 US import shipments on record. Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Inpro/Seal LLC make?
Inpro/Seal LLC manufactures permanent bearing protection and shaft sealing solutions for rotating equipment in automotive, electric-vehicle, renewable-energy, industrial, and consumer-goods sectors. Based in Rock Island, Illinois and founded in 1977, the company employs 100–200 people. The firm recently introduced a next-generation bearing isolator product line and expanded its smart shaft grounding portfolio to address contamination ingress and equipment reliability.
Where is Inpro/Seal LLC headquartered?
Inpro/Seal LLC is headquartered in Rock Island, Illinois (4221 81st Ave W, Rock Island, Illinois, 61201).
When was Inpro/Seal LLC founded?
Inpro/Seal LLC was founded in 1977.
How big is Inpro/Seal LLC?
Inpro/Seal LLC has an estimated 100-200 employees, with revenue in the $10-50M range (estimated).
What certifications does Inpro/Seal LLC hold?
Inpro/Seal LLC lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Inpro/Seal LLC import from overseas suppliers?
US customs bill-of-lading records show 64 inbound shipments for Inpro/Seal LLC, with top origins including Taiwan · China · South Korea · Poland.
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Last verified Nov 2026. Is this your company? Request a correction.
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