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Technical Data Sheet
PartsTable / COMPONENT / 500255
500255 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.2500 INCHES NOMINAL IN, overall_width: 0.2812 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-6433, 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
500255
NSN: 5330-00-297-6433
FSC: 5330
CAGE: 00000
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter0.2500 INCHES NOMINAL IN
overall_width0.2812 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter0.7500 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN5330-00-297-6433
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 500255 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: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 3.498 INCHES MINIMUM AND 3.502 INCHES MAXIMUM IN
•
MAXIMUM PRESSURE RATING: 7.0 POUNDS PER SQUARE INCH (PSI) LBS
•
COLOR: BLACK
•
MATERIAL: LEATHER SEALING ELEMENT A
•
ACCOMMODATED SHAFT DIAMETER: 2.250 INCHES NOMINAL IN
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
HOUSING BORE DIAMETER3.498 INCHES MINIMUM AND 3.502 INCHES MAXIMUM IN
MAXIMUM PRESSURE RATING7.0 POUNDS PER SQUARE INCH (PSI) LBS
COLORBLACK
MATERIALLEATHER SEALING ELEMENT A
ACCOMMODATED SHAFT DIAMETER2.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT B
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL
CASE STYLESQUARE
SEALING ELEMENT STYLEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
550-93Interchangeable
interchangeable cross-reference
interchangeable
07-208305Interchangeable
interchangeable cross-reference
interchangeable
007208305Interchangeable
interchangeable cross-reference
interchangeable
208305Interchangeable
interchangeable cross-reference
interchangeable
500255Interchangeable
interchangeable cross-reference
interchangeable
7369477Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 500255?
500255 is a BEARING,BALL,ANNULAR.
What parts can replace 500255?
There are 14 known substitutes for 500255: 550-93, 07-208305, 007208305 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 500255?
500255 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-6433. 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