Operating signal within 12 months from two or more independent sources.
What they make
Motor Vehicle Gasoline Engine and Engine Parts Manufacturing336310Grover Corporation manufactures piston rings and hydraulic seals for applications including transmissions, mobile hydraulics, industrial hydraulics, air compressors, shock absorbers, turbocharger assemblies, oil and gas compressors, hydro-electric systems, and large bore engines. The company produces rings and seals in various styles such as butt cut, side pin, oil control, angle cut, and step cut designs, using materials including cast iron, ductile iron, nickel-based alloys, inconel, bronze, and PTFE, with coating options such as manganese phosphate, chrome, and electroless nickel plating.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
CERTIFICATIONS — LISTED ON THE COMPANY’S WEBSITE
- ISO 9001
Read from this company’s own website on August 9, 2026. Nobody at the facility has confirmed it here, and FactoryRegistry has not verified these — unlike operating status, which comes from independent public records. A certificate can lapse without the website changing, so ask the facility for current ones.
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| 5730 Investments LLC | Glendale | Motor Vehicle Gasoline Engine and Engine Parts Manufacturing 336310 | UNVERIFIED | 0.0 KM |
| Sedia, INC. | Milwaukee | Other Motor Vehicle Parts Manufacturing 336390 | ACTIVE | 1.2 KM |
| Full Stop Technics LLC | Milwaukee | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | UNVERIFIED | 2.4 KM |
| Strattec Security CORP | Glendale | Nonferrous Metal Die-Casting Foundries 331523 | UNVERIFIED | 3.4 KM |
| Century City - Lot 2 | Milwaukee | Motor Vehicle Metal Stamping 336370 | UNVERIFIED | 4.0 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 5 FEDERAL SOURCES, 10 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in ICIS, NPDES, RCRAINFO, SSTS, WI-ESR · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | MAR 2026 | MAR 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| SBA LOANS | EXISTENCE | MAY 2018 | MAY 2018 |
| EPA FRS | EXISTENCE | APR 2017 | APR 2017 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | MAR 2026 |
| CAGE CODE | SAM GOV | MAR 2026 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | MAR 2026 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | MAR 2026 |
| REGISTRATION EXPIRATION | SAM GOV | MAR 2026 |
| SBA LOAN | SBA LOANS | MAY 2018 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | MAR 2026 |
| WEBSITE | SAM GOV | MAR 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.