AMERON of AMETEK MRO Receives FAA-PMA Approval for Oxygen Mask Overhaul Kit

AMERON of AMETEK MRO Receives FAA-PMA Approval for Oxygen Mask Overhaul Kit

BALDWIN PARK, CA (FEB. 2, 2022)AMERON, a global provider of aviation safety OEM and PMA products and third-party repair and overhaul services, recently achieved FAA-PMA approval on its Eros Mask Overhaul Kit, P/N M422B340.

The M422B340 kit is used for the overhaul of OEM Zodiac Aerospace’s MF20 Series Full Face Quick Donning Masks and is similar to the OEM P/N 422B340 in fit, form, and function.

“AMERON’s M422B340 kit will save customers money when compared to standard OEM pricing,” said Adam Brammer, Divisional Vice President and Business Manager of AMERON. “It is yet another major addition to AMERON’s constantly growing PMA parts line available for purchase on our online store.”

The M422B340 kit consists of 13 parts, which are eligible to be installed on Airbus A300, A310, A340, A380 and Boeing 727, 737, 747, 757, 767, DC-10, MD-10, MD-11 series of aircraft.

Part Number Description

M419628 Locking Block
M447883 Valve
M553008 Gasket
M553044 Seal
M555012 Valve
M555015 Diaphragm
M555016 Main Valve
M555070 Diaphragm
M555153 Combined Diaphragm
M559018 Filter
MR00220X160A20B6 O-ring
MR00490X190A5005 O-ring
MR03460X240A20B6 O-ring

AMERON recommends Zodiac Aerospace’s MF20 Series Full Face Quick Donning Masks be overhauled every six years utilizing the M422B340 overhaul kit.

AMERON's Oxygen Mask Overhaul Kit


AMERON specializes in global aviation safety equipment, including repair and overhaul solutions, 600 FAA/EASA-approved PMA parts and components, and a growing OEM portfolio. Serving customers for 50 years, AMERON has pioneered numerous advances in aerospace fire suppression systems and is a leader in pressurized gas systems, fire extinguishers, and pressurized stored energy systems. AMERON is certified by the U.S. Department of Transportation, and its products meet or exceed MIL-I-45208A specifications.

For more information, contact us:
4750 Littlejohn St.,
Baldwin Park, CA 91706
Tel: +1-626-593-2069
Fax: +1-626-856-0210


AMETEK MRO, a division of AMETEK, is a leading global provider of maintenance, repair, and overhaul services for commercial, regional, military, and general aviation aircrafts. AMETEK MRO services more than 40,000 aircraft components, with capabilities including avionics, fuel, heat transfer, landing gear, hydraulics, pneumatics, power, safety and medical, wheels and brakes, and more.

In addition to MRO services, the company also offers over 600 PMAs and a portfolio of OEM solutions. AMETEK MRO has 14 locations around the world and approximately 800 employees across its businesses: AEM, Aeromedic, Ameron, AMETEK Singapore, Antavia, Avtech Avionics and Instruments, B&S Aircraft, Drake Air, Muirhead Avionics, and Southern Aeroparts. For more information, visit and follow AMETEK MRO on LinkedIn.

AMETEK, Inc. (NYSE: AME) is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of approximately $5.5 billion. The common stock of AMETEK is a component of the S&P 500.