PartsTable
Technical Data Sheet
5215373 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GUARD,SWITCH is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, body_width: 3.000 INCHES NOMINAL IN, knuckle_type: FRICTION, mounting_method: SLOT, overall_diameter: 1.625 INCHES NOMINAL IN, performance_type: HEAVY DUTY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-521-5373, 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
5215373
NSN: 5340-00-521-5373
FSC: 5340
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
body_width3.000 INCHES NOMINAL IN
knuckle_typeFRICTION
mounting_methodSLOT
knuckle_quantity4
overall_diameter1.625 INCHES NOMINAL IN
performance_typeHEAVY DUTY
pin_removabilityNONREMOVABLE
special_featuresWEAPON SYSTEN ESSENTIAL
style_designatorBUTT
material_thickness0.250 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
NSN5340-00-521-5373
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5215373 MFR: OEM ⚠ 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
REVERSIBLE FEATURE: NOT INCLUDED
PERFORMANCE TYPE: HEAVY DUTY
MATERIAL THICKNESS: 0.250 INCHES NOMINAL IN
KNUCKLE QUANTITY: 4
PIN REMOVABILITY: NONREMOVABLE
PIN CENTER TO BODY EDGE DISTANCE: 1.750 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER: 0.406 INCHES NOMINAL IN
STYLE DESIGNATOR: BUTT
TECHNICAL CHARACTERISTICS (FLIS)
REVERSIBLE FEATURENOT INCLUDED
PERFORMANCE TYPEHEAVY DUTY
MATERIAL THICKNESS0.250 INCHES NOMINAL IN
KNUCKLE QUANTITY4
PIN REMOVABILITYNONREMOVABLE
PIN CENTER TO BODY EDGE DISTANCE1.750 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.406 INCHES NOMINAL IN
STYLE DESIGNATORBUTT
MATERIALUNABLE TO DECODE
SPECIAL FEATURESHOLES COUNTERSUNK 82 DEG T0 0.750 IN. DIA ON TOP IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
TM-BC 557Upgraded Successor
successor cross-reference
successor
10-2531Upgraded Successor
successor cross-reference
successor
SU1811Upgraded Successor
successor cross-reference
successor
PTZ08Interchangeable
interchangeable cross-reference
interchangeable
PIZ08Interchangeable
interchangeable cross-reference
interchangeable
389224Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5215373?
5215373 is a GUARD,SWITCH.
What parts can replace 5215373?
There are 8 known substitutes for 5215373: TM-BC 557, 10-2531, SU1811 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5215373?
5215373 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-521-5373. This indicates validated use in U.S. government and defense supply chains.
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