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504281 — PANEL,INDICATING,LIGHT TRANSMITT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

504281: PANEL,INDICATING,LIGHT TRANSMITT.

PANEL,INDICATING,LIGHT TRANSMITT. Key specifications include material: PLASTIC PANEL, overall_width: 1.750 INCHES NOMINAL IN, indicator_type: LIGHT LOCATION NOT OTHERWISE SPECIFIED, overall_length: 2.520 INCHES NOMINAL IN, end_item_identification: AIRCRAFT, HERCULES C-130. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-021-6167, 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
504281
NSN: 5330-00-021-6167
NIINs: 000216167, 013960264
FSC: 5330 — Packing and Gasket Materials
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialPLASTIC PANEL
overall_width1.750 INCHES NOMINAL IN
indicator_typeLIGHT LOCATION NOT OTHERWISE SPECIFIED
overall_length2.520 INCHES NOMINAL IN
end_item_identificationAIRCRAFT, HERCULES C-130
NSN5330-00-021-6167
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 504281 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
•
SEAL WIDTH: 0.334 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
OUTSIDE DIAMETER: 3.505 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 3.500 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 3.000 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT A
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.334 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
OUTSIDE DIAMETER3.505 INCHES NOMINAL IN
HOUSING BORE DIAMETER3.500 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER3.000 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT A
MATERIALCELLULOSE SEALING ELEMENT B
SUBSTITUTES & CROSS-REFERENCES 6
A-24257-9Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0619965Reference document
Same NSN cross-reference
Reference document — Secondary reference
9219423Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
0619965-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
RA-21117-9Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
70619965Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 504281?
504281 is a PANEL,INDICATING,LIGHT TRANSMITT.
What parts can replace 504281?
There are 6 known substitutes for 504281: A-24257-9, 0619965, 9219423 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 504281?
504281 is cataloged in the U.S. Government catalog under NSN 5330-00-021-6167. 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.