Stein Seal Company
At a glance
Employees100-499
In business sinceNot reported
HeadquartersKulpsville, PA
US patents51
SAM.gov UEIHXNDDLVPK338
CAGE code03673
Incorporated inPA
Brands
This company sells these brands.
- precision shaft seals
- bushing
- bellows
- film riding seals
- coordinate measuring machines
- scanning capabilities
- machining
- repairs
- testing
- engineering
- aerospace
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Certifications
AS9100ISO 9001Nadcap
Patents
51 US patents granted 1992–2024, 12 of them in the five years to SEP 2025.
Mechanical elements 46Engines, pumps, turbines 5
- Circumferential sealing assembly with duct-fed hydrodynamic groovesUS 12,044,317 · granted JUL 23, 2024
- Circumferential seal assembly with adjustable seating forcesUS 11,739,653 · granted AUG 29, 2023
- Circumferential seal assembly with multi-axis stepped groovesUS 11,732,753 · granted AUG 22, 2023
- Intershaft seal assembly with pressure-balanced translatable carrierUS 11,725,588 · granted AUG 15, 2023
- Circumferential seal assembly with multi-axis stepped groovesUS 11,686,346 · granted JUN 27, 2023
Newest 5 shown · Granted to Stein Seal Company · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Stein Seal Company | Kulpsville | PA | 100–499 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.