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S218D72P — STRAP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S218D72P: STRAP,RETAINING.

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: INCLUDED, material: ALUMINUM ALLOY 2024 LOCATION NOT OTHERWISE SPECIFIED, overall_width: 0.500 INCHES NOMINAL IN, overall_length: 6.006 INCHES NOMINAL IN, special_features: ONE END 0.250 HOLLOW RIVET IN MOUNTING HOLE, style_designator: SADDLE ARCH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-656-4835, 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
S218D72P
NSN: 5340-01-656-4835
FSC: 5340 — Hardware, Commercial
CAGE: 18076 — UMPCO, INC. DBA UMPCO INC (USA)
SPECIFICATIONS
cushionINCLUDED
materialALUMINUM ALLOY 2024 LOCATION NOT OTHERWISE SPECIFIED
arch_quantity1
overall_width0.500 INCHES NOMINAL IN
overall_length6.006 INCHES NOMINAL IN
special_featuresONE END 0.250 HOLLOW RIVET IN MOUNTING HOLE
style_designatorSADDLE ARCH
material_thickness0.064 INCHES NOMINAL IN
mounting_hole_size0.204 INCHES NOMINAL IN
end_item_identificationC-5 AIRCRAFT
inside_diameter/arch_length4.50 INCHES NOMINAL IN
material_document_and_classificationUMP-MT-ALU-001 MFR REF SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
NSN5340-01-656-4835
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S218D72P 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: 0.204 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 5.57 INCHES NOMINAL IN
•
ARCH QUANTITY: 1
•
STYLE DESIGNATOR: SADDLE ARCH
•
MATERIAL DOCUMENT AND CLASSIFICATION: UMP-MT-ALU-001 MFR REF SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL THICKNESS: 0.064 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE0.204 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS5.57 INCHES NOMINAL IN
ARCH QUANTITY1
STYLE DESIGNATORSADDLE ARCH
MATERIAL DOCUMENT AND CLASSIFICATIONUMP-MT-ALU-001 MFR REF SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
OVERALL LENGTH6.006 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.064 INCHES NOMINAL IN
CUSHIONINCLUDED
SPECIAL FEATURESONE END 0.250 HOLLOW RIVET IN MOUNTING HOLE
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S218D72P?
S218D72P is a STRAP,RETAINING.
What is the NSN for S218D72P?
S218D72P is cataloged in the U.S. Government catalog under NSN 5340-01-656-4835. 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.