PartsTable
Technical Data Sheet
M551 ✓ Verified by PartsTable
Sharp · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

<b>Content sharing made simple with native wireless screen mirroring</b><br>Initiating effective collaboration in meeting rooms has never been easier to plan, install and operate. Simply share content from your personal device to the large meeting room display.<br><br>The MultiSync® ME/M series AirServer models provide a sleek combination of intuitive screen sharing with professional display technology for meeting rooms and huddle spaces.<br><br>Future-proof and upgradable, AirServer software is powered by a pre-installed modular SoC Raspberry Pi module which transforms the Sharp/NEC M and ME series large format display into a universal screen mirroring receiver. With AirServer enabled on the Sharp/NEC large format display, users can wirelessly mirror the content on their personal screen (Mac or PC, iPhone, iPad, Android or Chromebook) to the meeting room display, instantly turning the room into a collaborative space.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-579-8108, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
M551
NSN: 5331-00-579-8108
FSC: 5331 — O-RING
CAGE: 12935 — MARS INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleBUSHING MOUNTED
switch_typePUSH
bore_diameter0.3125 INCHES NOMINAL IN
overall_width0.3120 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
nominal_thread_size0.812 INCHES IN
accessory_componentsCONNECTOR
functional_descriptionTHIS ITEM HAS A DUAL IMPEDANCE CAPABILITY,IS UNIDIRECTIONAL,AND NOISE CANCELLING
connector_identificationPJ068
overall_outside_diameter0.5000 INCHES NOMINAL IN
thread_quantity_per_inch24
NSN5331-00-579-8108
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M551 MFR: Sharp ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
MS35290-74Interchangeable
interchangeable cross-reference
interchangeable
100034Interchangeable
interchangeable cross-reference
interchangeable
A329246Interchangeable
interchangeable cross-reference
interchangeable
201148Interchangeable
interchangeable cross-reference
interchangeable
4130053Interchangeable
interchangeable cross-reference
interchangeable
3-598Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M551?
M551 is a SWITCH,LOCK,IGNITION manufactured by Sharp.
What parts can replace M551?
There are 35 known substitutes for M551: MS35290-74, 100034, A329246 and 32 more. Substitute compatibility should be verified for your specific system.
Is M551 still available?
M551 is currently cancelled.
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