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518805 — STRAP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

518805: STRAP,RETAINING.

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: NOT INCLUDED, material: STEEL COMP 321 LOCATION NOT OTHERWISE SPECIFIED, mounting_pad: NOT INCLUDED, overall_width: 0.500 INCHES NOMINAL IN, overall_length: 2.683 INCHES NOMINAL IN, style_designator: IRREGULAR ARCH. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-939-3354, 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
518805
NSN: 5340-00-939-3354
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
cushionNOT INCLUDED
materialSTEEL COMP 321 LOCATION NOT OTHERWISE SPECIFIED
mounting_padNOT INCLUDED
overall_width0.500 INCHES NOMINAL IN
overall_length2.683 INCHES NOMINAL IN
style_designatorIRREGULAR ARCH
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
mounting_hole_size0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
inside_diameter/arch_length1.499 INCHES NOMINAL IN
distance_between_mounting_hole_centers2.183 INCHES NOMINAL IN
distance_between_base_and_inside_of_large_arch0.537 INCHES NOMINAL IN
NSN5340-00-939-3354
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 518805 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
•
MOUNTING HOLE SIZE: 0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 2.183 INCHES NOMINAL IN
•
MOUNTING PAD: NOT INCLUDED
•
STYLE DESIGNATOR: IRREGULAR ARCH
•
DISTANCE BETWEEN BASE AND INSIDE OF LARGE ARCH: 0.537 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS2.183 INCHES NOMINAL IN
MOUNTING PADNOT INCLUDED
STYLE DESIGNATORIRREGULAR ARCH
DISTANCE BETWEEN BASE AND INSIDE OF LARGE ARCH0.537 INCHES NOMINAL IN
OVERALL LENGTH2.683 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
CUSHIONNOT INCLUDED
MATERIALSTEEL COMP 321 LOCATION NOT OTHERWISE SPECIFIED
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 518805?
518805 is a STRAP,RETAINING.
What is the NSN for 518805?
518805 is cataloged in the U.S. Government catalog under NSN 5340-00-939-3354. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.