PartsTable
Technical Data Sheet
SKF 400121 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 11.500 MILLIMETERS NOMINAL MM, cross-sectional_height: 7.700 MILLIMETERS NOMINAL MM, end_item_identification: APL UPDATE, part_name_assigned_by_controlling_agency: V-RING SEALS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-732-0890, 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
SKF 400121
NSN: 5331-01-732-0890
FSC: 5331 — O-RING
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter11.500 MILLIMETERS NOMINAL MM
cross-sectional_height7.700 MILLIMETERS NOMINAL MM
end_item_identificationAPL UPDATE
part_name_assigned_by_controlling_agencyV-RING SEALS
NSN5331-01-732-0890
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SKF 400121 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
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER: 11.500 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL HEIGHT: 7.700 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
END ITEM IDENTIFICATIONAPL UPDATE
CENTER HOLE DIAMETER11.500 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL HEIGHT7.700 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYV-RING SEALS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
ASTM B221Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
AA7T279Interchangeable
interchangeable cross-reference
interchangeable
400121Interchangeable
interchangeable cross-reference
interchangeable
25327Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SKF 400121?
SKF 400121 is a O-RING.
What parts can replace SKF 400121?
There are 11 known substitutes for SKF 400121: AMS-QQ-A-200/3, ASTM B221, QQ-A-200/3 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SKF 400121?
SKF 400121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-732-0890. This indicates validated use in U.S. government and defense supply chains.
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