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Technical Data Sheet
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208305 ✓ 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 GEAR CLUSTER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8620 OVERALL, bore_style: PLAIN BOTH ENDS, design_type: HELICAL SECOND GEAR, hardness_rating: 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL, hub_nominal_length: 3.031 INCHES BETWEEN FIRST AND SECOND GEAR IN, hub_nominal_diameter: 2.250 INCHES BETWEEN FIRST AND SECOND GEAR IN. 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
208305
NSN: 5330-00-297-6433
FSC: 5330
CAGE: 76292 — MICHIGAN LEATHER PRODUCTS CO (USA)
SPECIFICATIONS
materialSTEEL COMP 8620 OVERALL
bore_stylePLAIN BOTH ENDS
design_typeHELICAL SECOND GEAR
hardness_rating58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL
hub_nominal_length3.031 INCHES BETWEEN FIRST AND SECOND GEAR IN
hub_nominal_diameter2.250 INCHES BETWEEN FIRST AND SECOND GEAR IN
hub_style_designatorPLAIN BETWEEN FIRST AND SECOND GEAR
bore_nominal_diameter1.626 INCHES BOTH ENDS IN
nominal_overall_length4.753 INCHES IN
nominal_outside_diameter3.943 INCHES SECOND GEAR IN
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-297-6433
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 208305 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 208305?
208305 is a GEAR CLUSTER.
What parts can replace 208305?
There are 14 known substitutes for 208305: 550-93, 07-208305, 007208305 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 208305?
208305 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