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56659 — CABLE ASSEMBLY,SPECIAL PURPOSE,E

✓ Government record, cited
Tactic · ORING SEAL
PRODUCT OVERVIEW

56659: CABLE ASSEMBLY,SPECIAL PURPOSE,E.

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include material: PLASTIC, body_style: TEE ANGLE, valve_size: 0.375 INCHES IN, outside_diameter: 1.590 INCHES NOMINAL IN, overall_diameter: 2.695 INCHES NOMINAL IN, special_features: TPCO 3/8 KING VALVE. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-268-7590, 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
56659
NSN: 5330-00-268-7590
NIINs: 002687590, 005190086, 013504019, 016495696, 016941177
FSC: 5330 — Packing and Gasket Materials
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialPLASTIC
body_styleTEE ANGLE
valve_size0.375 INCHES IN
outside_diameter1.590 INCHES NOMINAL IN
overall_diameter2.695 INCHES NOMINAL IN
special_featuresTPCO 3/8 KING VALVE
special_markingsWHITE ZONE CENTERED 2/3 OF FULL BLACK ARC MARKED POINTER MUST FALL ENTIRELY WITHIN WHITE ZONE
style_designatorROUND FLUSH MTG
aperture_diameter1.325 INCHES NOMINAL IN
accuracy_in_percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
installation_designPANEL
mounting_hole_diameter0.125 INCHES NOMINAL IN
NSN5330-00-268-7590
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 56659 MFR: Tactic ⚠ 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 THICKNESS: 0.080 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: METAL WITH SOFT FILLER
•
OUTSIDE DIAMETER: 1.590 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.325 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS CORE
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.080 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLEMETAL WITH SOFT FILLER
OUTSIDE DIAMETER1.590 INCHES NOMINAL IN
APERTURE DIAMETER1.325 INCHES NOMINAL IN
MATERIALASBESTOS CORE
MATERIALCOPPER CASE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 56659?
56659 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E manufactured by Tactic.
What is the NSN for 56659?
56659 is cataloged in the U.S. Government catalog under NSN 5330-00-268-7590. 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.