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509416 ✓ 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 COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT B, case_style: RECESSED, seal_width: 0.375 INCHES NOMINAL IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, outside_diameter: 4.254 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-411-0756, 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
509416
NSN: 5330-00-411-0756
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT B
case_styleRECESSED
seal_width0.375 INCHES NOMINAL IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
outside_diameter4.254 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter4.249 INCHES NOMINAL IN
sealing_element_styleANGULAR-OPPOSED
accommodated_shaft_diameter3.250 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3600 FEET PER MINUTE FT
NSN5330-00-411-0756
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 509416 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
•
SEALING ELEMENT STYLE: ANGULAR-OPPOSED
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 4.249 INCHES NOMINAL IN
•
CASE STYLE: RECESSED
•
ACCOMMODATED SHAFT DIAMETER: 3.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT B
•
SURFACE TREATMENT: PLASTIC CASE
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEANGULAR-OPPOSED
SEAL WIDTH0.375 INCHES NOMINAL IN
HOUSING BORE DIAMETER4.249 INCHES NOMINAL IN
CASE STYLERECESSED
ACCOMMODATED SHAFT DIAMETER3.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT B
SURFACE TREATMENTPLASTIC CASE
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
A-A-2318Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-325Interchangeable
interchangeable cross-reference
interchangeable
32.395Interchangeable
interchangeable cross-reference
interchangeable
32395Interchangeable
interchangeable cross-reference
interchangeable
244-601079-000Interchangeable
interchangeable cross-reference
interchangeable
100-601356-000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 509416?
509416 is a COVER,ACCESS.
What parts can replace 509416?
There are 10 known substitutes for 509416: A-A-2318, GGG-F-325, 32.395 and 7 more. Substitute compatibility should be verified for your specific system.
Is 509416 still available?
509416 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026