Merrimac Appoints New Director to Board

WEST CALDWELL, NJ (May 4, 2000) - Merrimac Industries, Inc. (AMEX: MRM) today announced the appointment of Mr. Joseph B. Fuller to its Board of Directors.

Mr. Fuller is a founding director, and President and Chief Executive Officer of Monitor Company located in Cambridge, Massachusetts, a strategy advisory firm serving international clients on a diversified mix of issues related to enhancing competitiveness. He is a graduate of Harvard College, where he was a Charles Warren Fellow and a graduate of the Harvard Business School.

Mason N. Carter, Chairman, President and CEO of Merrimac stated: "Joe Fuller is an internationally recognized expert on telecommunications and has served some of the industry's leading companies. His work has assisted telecommunications equipment manufacturers, service providers, regulatory bodies and governments in formulating their national policy. As our presence in the wireless telecommunications market increases through our recently announced alliance with Ericsson and market development by our Multi-Mix® Wireless Microtechnology Group, Joe's knowledge and counsel will be extremely beneficial in optimally serving our customers."

Carter further stated: "Joe's experience and business acumen further adds to a Board of Directors that provides our Company with broad expertise and commitment to Merrimac shareholders. This appointment brings the Board members to a total of six."

About Merrimac

Merrimac Industries, Inc. is a leader in the design and manufacture of RF Microwave components, assemblies and Micro-Multifunction (MMFM®) Modules serving the wireless telecommunications industry worldwide with enabling technologies for commercial applications. Merrimac is focused on providing Total Integrated Packaging Solutions^TM with Multi-Mix Microtechnology®, a leading edge competency providing value to our customers through miniaturization and integration. The Multi-Mix® process for microwave, multilayer integrated MMFM® circuits is a patented method developed at Merrimac Industries based on fluoropolymer composite substrates. The fusion bonding of multilayer structures provides a homogeneous dielectric medium for superior electrical performance at microwave frequencies. The bonded layers may incorporate embedded semiconductor devices, MMICs, etched resistors, passive circuit elements and plated-through via holes to form a three-dimensional subsystem enclosure that requires no further packaging. Merrimac Industries, Inc. is ISO 9001 certified.

Merrimac Industries, Inc. and its subsidiary Filtran Microcircuits Inc., with locations in West Caldwell, NJ, San Jose, Costa Rica, and Ottawa, Ontario, Canada, have approximately 200 co-workers in the design and manufacture of signal processing components, gold plating of high-frequency microstrip, bonded stripline and thick metal-backed Teflon (PTFE) micro-circuitry, MMFM™ and subsystems. Merrimac (MRM) is listed on the American Stock Exchange. For more information about Merrimac Industries, visit its home page at www.merrimacind.com.

This press release contains statements relating to future results of Merrimac (including certain projections and business trends) that are "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those projected as a result of certain risks and uncertainties. These risks and uncertainties include, but are not limited to: general economic and industry conditions; slower than anticipated penetration into the satellite communications, defense and wireless markets; the risk that the benefits expected from the acquisition of Filtran Microcircuits Inc. are not realized; the ability to protect proprietary information and technology; competitive products and pricing pressures; risks relating to governmental regulatory actions in communications and defense programs; and inventory risks due to technological innovation, as well as other risks and uncertainties, including but not limited to those detailed from time to time in Merrimac's Securities and Exchange Commission filings. These forward-looking statements are made only as of the date hereof, and Merrimac undertakes no obligation to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise.

Note: These news releases are also available on the Internet at: www.prnewswire.com.

Contacts

Mason N. Carter, Chairman and CEO,
Tel: 973.575.1300, Ext. 1202; Fax: 973.882.5989
E-mail: mnc@merrimacind.com