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255709 — STRAP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

255709: STRAP,RETAINING.

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: INCLUDED, material: RUBBER CHLOROPRENE CLASS CR CUSHIONING, mounting_pad: NOT INCLUDED, style_designator: MULTIPLE ARCH, surface_treatment: CADMIUM, material_document_and_classification: AMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-272-9268, 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
255709
NSN: 5340-01-272-9268
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
cushionINCLUDED
materialRUBBER CHLOROPRENE CLASS CR CUSHIONING
mounting_padNOT INCLUDED
arch_quantity3
style_designatorMULTIPLE ARCH
surface_treatmentCADMIUM
material_document_and_classificationAMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
NSN5340-01-272-9268
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 255709 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 PAD: NOT INCLUDED
•
ARCH QUANTITY: 3
•
STYLE DESIGNATOR: MULTIPLE ARCH
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
•
CUSHION: INCLUDED
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR CUSHIONING
TECHNICAL CHARACTERISTICS
MOUNTING PADNOT INCLUDED
ARCH QUANTITY3
STYLE DESIGNATORMULTIPLE ARCH
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
CUSHIONINCLUDED
SURFACE TREATMENTCADMIUM
MATERIALRUBBER CHLOROPRENE CLASS CR CUSHIONING
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 255709?
255709 is a STRAP,RETAINING.
What is the NSN for 255709?
255709 is cataloged in the U.S. Government catalog under NSN 5340-01-272-9268. 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.