Lockheed Martin Corporation · Electronic Components
743300
Seal, Waveguide
Part Number743300
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-552-0740 (NSN)
Federal Item NameSEAL,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Seal Outside Height3.500 INCHES NOMINAL
Seal Thickness0.125 INCHES NOMINAL
Seal Outside Width9.375 INCHES NOMINAL
FSC Application DataMULTIAPPLICATION
Style DesignatorRECTANGULAR SOLID SEAL
MaterialGLASS SINGLE SEAL
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 743300 available?
We can source 743300 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 743300 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 743300 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 743300?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 743300?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.