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131J657ITEM17 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

131J657ITEM17: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER POLYURETHANE AND DISULFIDE MOLYBDENUM OVERALL, peripheral_diameter: 3.500 INCHES NOMINAL IN, center_hole_diameter: 3.000 INCHES NOMINAL IN, cross-sectional_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-390-4240, 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
131J657ITEM17
NSN: 5330-01-390-4240
FSC: 5330 — Packing and Gasket Materials
CAGE: 4N727 — INTEGRAL AEROSPACE, LLC DBA PCX AEROSYSTEMS - SANTA ANA DIV INTEGRAL AEROSPACE, LLC DBA PCX AEROSYSTEMS - SANTA ANA (USA)
SPECIFICATIONS
materialRUBBER POLYURETHANE AND DISULFIDE MOLYBDENUM OVERALL
peripheral_diameter3.500 INCHES NOMINAL IN
center_hole_diameter3.000 INCHES NOMINAL IN
cross-sectional_height0.250 INCHES NOMINAL IN
NSN5330-01-390-4240
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 131J657ITEM17 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
•
CROSS-SECTIONAL HEIGHT: 0.250 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 3.500 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.000 INCHES NOMINAL IN
•
MATERIAL: RUBBER POLYURETHANE AND DISULFIDE MOLYBDENUM OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
PERIPHERAL DIAMETER3.500 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.000 INCHES NOMINAL IN
MATERIALRUBBER POLYURETHANE AND DISULFIDE MOLYBDENUM OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 131J657ITEM17?
131J657ITEM17 is a PACKING,PREFORMED.
What is the NSN for 131J657ITEM17?
131J657ITEM17 is cataloged in the U.S. Government catalog under NSN 5330-01-390-4240. 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.