Hydro-test Products, INC.

85 Hudson Rd, Stow, MA 01775

ACTIVELAST SEEN IN FEDERAL DATA OCT 2026 · 3 SOURCES

Operating signal within 12 months from two or more independent sources.

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Their homepage, crawled JUL 2026

What they make

All Other Miscellaneous Manufacturing339999

cylinder testing equipment
filling
re-qualification
pressure gauges
calibrated cylinders
scales
measurement
pumps
fire extinguishers
welding
SCUBA

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Products

Made or handled here · 21

#100-508: Fire Hose Test Adapter 1 1/2"nst · #100-512: Fire Hose Test Adapter 2 1/2"nst · #110-001: Quick Coupler, 1/2"fnpt, Plated Steel · #110-002: Nipple, 1/2"mnpt, Plated Steel · #140-415-25: Dual Gauge Assy For Proof Testing · #140-415: Dual Gauge Assy For Dot Proof Testing · #140-417: Dual Gauge Assy For Dot Proof Testing · #190-024: Replacement Manual Pump For 500-026b · #190-030: AIR OPERATED PRESSURE TEST PUMP, 6000psi · #190-031: AIR OPERATED PRESSURE TEST PUMP, 10,000 psi · #190-400: Test Pump, 1000 Psi · #190-402: Test Pump,1850 Psi · #190-404: Test Pump, 1850 Psi · #190-406: Test Pump, 6100 Psi · #190-408: Test Pump, 6100 Psi · #190-410: Test Pump, 8800 Psi · #510-010: Cylinder Vise Station, Air Operated · #520-002: Valving / De-Valving Machine · #530-020-Y: CYLINDER HOT AIR DRYER, 115V-60Hz · #540-100: Cylinder Roller / Mixer / Inverter · #570-025: Halon 1211 Clean Agent Recovery System

Where these came from

21 from the company’s own website · Company website

json-ld on https://hydro-test.com/equipment/

Where it is

42.42943, -71.53223 · CENSUS TIGER

COUNTY

Middlesex County

METRO AREA

Boston-Cambridge-Newton, MA-NH

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STREET VIEW

Open street-level view — SEP 2025

Other plants nearby

Facility	City	Industry	Status	Distance
Mach Machine INC	Hudson	Precision Turned Product Manufacturing 332721	ACTIVE	4.8 KM
Tiger Presentations LLC	Hudson	Audio and Video Equipment Manufacturing 334310	ACTIVE	5.2 KM
Lincoln Tool & Machine CORP	Hudson	Machine Shops 332710	ACTIVE	5.4 KM
Walton Chase Elastomers INC	Hudson	Synthetic Rubber Manufacturing 325212	UNVERIFIED	5.4 KM
Fastenerz.com, INC	Marlborough	Bolt, Nut, Screw, Rivet, and Washer Manufacturing 332722	ACTIVE	6.5 KM

Every listed plant in Middlesex County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 10 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

SAM.gov entity registrationOPERATING
Record P5UDV8L3KFB4 · first seen MAR 2026 · last seen OCT 2026
The company’s own websiteOPERATING
first seen JUL 2026 · last seen SEP 2026
SBA Paycheck Protection Program loan recordsEXISTENCE
Record MA|stow|85 hudson rd · first seen APR 2020 · last seen APR 2020

IN MIDDLESEX COUNTY68 other plants share this one’s industry (Other Miscellaneous Manufacturing, NAICS 3399); 20 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: SAM.gov: HYDRO-TEST PRODUCTS, INC.
Street address: SAM.gov: 85 HUDSON RD
City: SAM.gov: STOW
State: SAM.gov: MA
Coordinates: Census geocoder: 42.429427721949,-71.532231765681 · JUL 2026
Employees (band): SBA PPP: 1-19 · APR 2020
Website: SAM.gov: http://www.hydro-test.com
CAGE code: SAM.gov: 56043
PPP loan: SBA PPP: PPP loan x1, approved 2020-04-07, 17 jobs reported · APR 2020
SAM registration expires: SAM.gov: 2027-03-10

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