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Technical Data Sheet
PartsTable / MRO / 37543
37543 ✓ Verified by PartsTable
Lindy · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

- High-performance AV cable for use with VCRs, TVs, DVD players etc.<br>- Delivers superb clarity, definition and detail<br>- Connectors: 3 x Phono Male to 3 x Phono Male<br>- Gold-plated connectors for excellent signal transfer<br>- 75 Ohm Pure Crystal Oxygen Free Copper (PC-OFC) coaxial conductor<br>- OFC braid with Aluminium Mylar foil wrap provides improved shielding This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-136-5073, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 37543
NSN: 5330-00-136-5073
FSC: 5330
CAGE: 07443 — LANDOLL CORPORATION DBA LANDOLL CORPORATION DREXEL DIVISION DIV DREXEL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
thread_class2A A
thread_length1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
fastener_length1.250 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
peripheral_diameter3.250 INCHES NOMINAL IN
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
center_hole_diameter2.6875 INCHES NOMINAL IN
NSN5330-00-136-5073
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37543 MFR: Lindy ⚠ 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
KEY FEATURES
•
CENTER HOLE DIAMETER: 2.6875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: U
•
PERIPHERAL DIAMETER: 3.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.2187 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER2.6875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEU
PERIPHERAL DIAMETER3.250 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.2187 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
5305PL0636444Interchangeable
interchangeable cross-reference
interchangeable
W1006-11-4Interchangeable
interchangeable cross-reference
interchangeable
PK365Interchangeable
interchangeable cross-reference
interchangeable
037543Interchangeable
interchangeable cross-reference
interchangeable
37543Interchangeable
interchangeable cross-reference
interchangeable
A53640PC15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37543?
37543 is a RING GUIDE,SAFETY VALVE manufactured by Lindy. It is classified as a MRO (MRO_GENERAL).
What parts can replace 37543?
There are 10 known substitutes for 37543: 5305PL0636444, W1006-11-4, PK365 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 37543?
37543 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-136-5073. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026