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PK78003125412507 — PACKING ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

PK78003125412507: PACKING ASSEMBLY.

The PACKING ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 3.500 INCHES NOMINAL IN, material: GRAPHITE OVERALL, inside_diameter: 3.125 INCHES NOMINAL IN, outside_diameter: 4.125 INCHES NOMINAL IN, special_features: SET CONSISTS OF 7 PACKING RINGS;ONE PUMP REQUIRES TWO SETS TO REPLACE PACKING IN BOTH STUFFING BOXES, end_item_identification: USS CONSTELLATION (CV64). This part is cataloged in the U.S.

Government catalog under NSN 5330-01-486-5988, 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
PK78003125412507
NSN: 5330-01-486-5988
FSC: 5330 — Packing and Gasket Materials
CAGE: 8U221 — NEW ENGLAND BRAIDING CO. INC. (USA)
SPECIFICATIONS
height3.500 INCHES NOMINAL IN
materialGRAPHITE OVERALL
inside_diameter3.125 INCHES NOMINAL IN
outside_diameter4.125 INCHES NOMINAL IN
special_featuresSET CONSISTS OF 7 PACKING RINGS;ONE PUMP REQUIRES TWO SETS TO REPLACE PACKING IN BOTH STUFFING BOXES
end_item_identificationUSS CONSTELLATION (CV64)
cross-sectional_shape_styleSQUARE/RECTANGULAR BOTTOM RING
material_document_and_classificationSTYLE 7800 GRAPHITE YARN MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-486-5988
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PK78003125412507 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
•
OUTSIDE DIAMETER: 4.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: STYLE 7800 GRAPHITE YARN MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR BOTTOM RING
•
INSIDE DIAMETER: 3.125 INCHES NOMINAL IN
•
HEIGHT: 3.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER4.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSTYLE 7800 GRAPHITE YARN MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR INTERMEDIATE RING
INSIDE DIAMETER3.125 INCHES NOMINAL IN
HEIGHT3.500 INCHES NOMINAL IN
SPECIAL FEATURESSET CONSISTS OF 7 PACKING RINGS;ONE PUMP REQUIRES TWO SETS TO REPLACE PACKING IN BOTH STUFFING BOXES
END ITEM IDENTIFICATIONUSS CONSTELLATION (CV64)
MATERIALGRAPHITE 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PK78003125412507?
PK78003125412507 is a PACKING ASSEMBLY.
What is the NSN for PK78003125412507?
PK78003125412507 is cataloged in the U.S. Government catalog under NSN 5330-01-486-5988. This indicates validated use in U.S. government and defense supply chains.
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