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28457 — TRANSFORMER,POWER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

28457: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, body_width: 2.900 INCHES MAXIMUM IN, body_length: 3.780 INCHES MAXIMUM IN, overall_width: 4.750 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, overall_height: 2.409 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-389-9215, 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
28457
NSN: 5330-00-389-9215
NIINs: 003899215, 010037813, 011747691, 014256571, 016278122
FSC: 5330 — Packing and Gasket Materials
CAGE: 99643 — EATON AEROSPACE LLC DBA EATON AEROSPACE JACKSON (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
body_width2.900 INCHES MAXIMUM IN
body_length3.780 INCHES MAXIMUM IN
overall_width4.750 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height2.409 INCHES MAXIMUM IN
overall_length5.625 INCHES NOMINAL IN
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
outside_diameter0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
special_featuresONE PRIMARY AND FIVE SECONDARIES
style_designatorCIRCULAR
NSN5330-00-389-9215
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 28457 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 THICKNESS: 0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
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STYLE DESIGNATOR: CIRCULAR
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MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-9047 COMP 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
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CROSS-SECTIONAL SHAPE STYLE: METAL
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OUTSIDE DIAMETER: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
•
MATERIAL: TITANIUM UNS R50250 OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-9047 COMP 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEMETAL
OUTSIDE DIAMETER0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
APERTURE DIAMETER0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
MATERIALTITANIUM UNS R50250 OVERALL
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 28457?
28457 is a TRANSFORMER,POWER.
What is the NSN for 28457?
28457 is cataloged in the U.S. Government catalog under NSN 5330-00-389-9215. 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.