Manufacturing of gaskets and seals

Facility	City	State	Employees	Status
MSMagnetic Seal LLC	Warren	RI	20–99	● ACTIVE
Mahle Industrial Thermal Systems America LP	Belmont	MI	—	● ACTIVE
Mallory Industries, Incorporated	Farmington	CT	—	● ACTIVE
Maney Aircraft, INC.	Ontario	CA	—	● ACTIVE
MDManufacturing Development INC	Cheney	KS	—	● ACTIVE
MSManufacturing Solutions, INC	Newton	KS	20–99	● ACTIVE
MAMarathonnorco Aerospace, INC.	Waco	TX	20–99	● ACTIVE
Martin-baker America INC	Johnstown	PA	—	● ACTIVE
Marvin Engineering Co, INC	Inglewood	CA	—	● ACTIVE
Marvin Test Solutions, INC.	Irvine	CA	—	● ACTIVE
Mas Components & Coatings, LLC	Selmer	TN	—	● ACTIVE
Max Aerostructures, LLC	Wichita	KS	—	● ACTIVE
Maynard INC	Fayetteville	AR	—	● ACTIVE
May Tool and Mold Co., INC.	Kansas City	MO	—	● ACTIVE
Mckenzie Machining INC	San Jose	CA	—	● ACTIVE
MBMcmellon Bros., Incorporated	Stratford	CT	20–99	● ACTIVE
Mct Industries, INC.	Bernalillo	NM	—	● ACTIVE
MDMeggitt Defense Systems, INC.	Irvine	CA	100–499	● ACTIVE
Mekra Lang North America, LLC	Ridgeway	SC	100–499	● ACTIVE
Mercer Rubber Company	Bellmawr	NJ	20–99	● ACTIVE
Metalform Industries, INC.	Wichita	KS	—	● ACTIVE
MIMetal Improvement Company, LLC	Santa Ana	CA	—	● ACTIVE
Mid-continent Instrument CO INC	Wichita	KS	—	● ACTIVE
Mid-continent Instrument Co, INC.	Chatsworth	CA	—	● ACTIVE
Mike Kenney Tool, INC	Placentia	CA	—	● ACTIVE

FactoryRegistry lists 4,771 facilities whose primary industry classification is one of the 3 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced gaskets and seals, metallic and machined, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 3 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported, where 325 establishments reported producing it.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2031475000. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.