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399N230 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER POLYACRYLATE CLASS ACM SEALING ELEMENT B, case_style: SQUARE, seal_width: 0.656 INCHES NOMINAL IN, housing_bore_diameter: 4.003 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 2.938 INCHES NOMINAL 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 5330-00-524-0755, 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
399N230
NSN: 5330-00-524-0755
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER POLYACRYLATE CLASS ACM SEALING ELEMENT B
case_styleSQUARE
seal_width0.656 INCHES NOMINAL IN
housing_bore_diameter4.003 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter2.938 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-524-0755
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 399N230 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
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 2.938 INCHES NOMINAL IN
•
MATERIAL: LEATHER SEALING ELEMENT A
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 4.003 INCHES NOMINAL IN
•
SEAL WIDTH: 0.656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER2.938 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT A
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER4.003 INCHES NOMINAL IN
MATERIALRUBBER POLYACRYLATE CLASS ACM SEALING ELEMENT B
SEAL WIDTH0.656 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
53604Interchangeable
interchangeable cross-reference
interchangeable
200C 1-5/8Interchangeable
interchangeable cross-reference
interchangeable
1302Interchangeable
interchangeable cross-reference
interchangeable
SK33-1004AInterchangeable
interchangeable cross-reference
interchangeable
33-1004Interchangeable
interchangeable cross-reference
interchangeable
5867331004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 399N230?
399N230 is a SEAL,PLAIN ENCASED.
What parts can replace 399N230?
There are 17 known substitutes for 399N230: 53604, 200C 1-5/8, 1302 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 399N230?
399N230 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-524-0755. 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