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621281 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The LIGHT EMITTING DIODE is a the manufacturer industrial component. Key specifications include overall_length: 0.875 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S), overall_diameter: 0.315 INCHES NOMINAL IN, lens_transparency: TRANSLUCENT, end_item_identification: ALOFTS SONAR SYSTEM, MODEL 980 (V1), terminal_type_and_quantity: 2 UNINSULATED WIRE LEAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-927-9260, 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
621281
NSN: 5330-00-927-9260
FSC: 5330
CAGE: 73782 — TOWMOTOR CORP DALLAS PLANT SUB OF CATERPILLAR TRACTOR CO (USA)
SPECIFICATIONS
overall_length0.875 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
overall_diameter0.315 INCHES NOMINAL IN
lens_transparencyTRANSLUCENT
end_item_identificationALOFTS SONAR SYSTEM, MODEL 980 (V1)
mounting_facility_quantity1
terminal_type_and_quantity2 UNINSULATED WIRE LEAD
color_tone_produced_per_sourceRED SEMICONDUCTOR AND RED LENS
voltage_rating_in_volts_per_characteristic28.0 NOMINAL FORWARD VOLTAGE, DC
NSN5330-00-927-9260
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 621281 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
292-1669GP1Interchangeable
interchangeable cross-reference
interchangeable
292-1669G1Interchangeable
interchangeable cross-reference
interchangeable
292-1669G1EInterchangeable
interchangeable cross-reference
interchangeable
21281Interchangeable
interchangeable cross-reference
interchangeable
30453Interchangeable
interchangeable cross-reference
interchangeable
K128-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 621281?
621281 is a LIGHT EMITTING DIODE.
What parts can replace 621281?
There are 9 known substitutes for 621281: 292-1669GP1, 292-1669G1, 292-1669G1E and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 621281?
621281 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-927-9260. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026