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N43-25 — PACKING ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

N43-25: PACKING ASSEMBLY.

The PACKING ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 4.750 INCHES NOMINAL IN, joint_type: BUTT BOTTOM RING, inside_diameter: 1.000 INCHES NOMINAL IN, outside_diameter: 1.750 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE/RECTANGULAR INTERMEDIATE RING. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-922-5237, 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
N43-25
NSN: 5330-00-922-5237
FSC: 5330 — Packing and Gasket Materials
CAGE: 64731 — WESTERN SKY INDUSTRIES INC DBA ELECTROMECH TECHOLOGIES (USA)
SPECIFICATIONS
height4.750 INCHES NOMINAL IN
joint_typeBUTT BOTTOM RING
inside_diameter1.000 INCHES NOMINAL IN
outside_diameter1.750 INCHES NOMINAL IN
intermediate_ring_quantity8
cross-sectional_shape_styleSQUARE/RECTANGULAR INTERMEDIATE RING
NSN5330-00-922-5237
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N43-25 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
•
INTERMEDIATE RING QUANTITY: 8
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR BOTTOM RING
•
INSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
HEIGHT: 4.750 INCHES NOMINAL IN
•
JOINT TYPE: BUTT BOTTOM RING
TECHNICAL CHARACTERISTICS
INTERMEDIATE RING QUANTITY8
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR INTERMEDIATE RING
INSIDE DIAMETER1.000 INCHES NOMINAL IN
HEIGHT4.750 INCHES NOMINAL IN
JOINT TYPEBUTT BOTTOM RING
JOINT TYPEBUTT TOP RING
JOINT TYPESCARF-PERIPHERAL INTERMEDIATE RING
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
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N43-25?
N43-25 is a PACKING ASSEMBLY.
What is the NSN for N43-25?
N43-25 is cataloged in the U.S. Government catalog under NSN 5330-00-922-5237. 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.