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MB221812 — RING,OIL CONTROL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MB221812: RING,OIL CONTROL.

The RING,OIL CONTROL is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL, end_item_identification: BEARING,IMPELLER SHAFT AFT, part_name_assigned_by_controlling_agency: (INAVY)RING,SPLASH,OIL. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-551-8795, 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
MB221812
NSN: 5330-01-551-8795
FSC: 5330 — Packing and Gasket Materials
CAGE: 07309 — BIRD-JOHNSON PROPELLER COMPANY, LLC (USA)
SPECIFICATIONS
materialRUBBER NATURAL
end_item_identificationBEARING,IMPELLER SHAFT AFT
part_name_assigned_by_controlling_agency(INAVY)RING,SPLASH,OIL
NSN5330-01-551-8795
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MB221812 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 NATURAL
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCY(INAVY)RING,SPLASH,OIL
END ITEM IDENTIFICATIONBEARING,IMPELLER SHAFT AFT
MATERIALRUBBER NATURAL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 2
OS/3/221812Reference document
Same NSN cross-reference
Reference document — Secondary reference
NB/0/221797Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MB221812?
MB221812 is a RING,OIL CONTROL.
What parts can replace MB221812?
There are 2 known substitutes for MB221812: OS/3/221812, NB/0/221797. Substitute compatibility should be verified for your specific system.
What is the NSN for MB221812?
MB221812 is cataloged in the U.S. Government catalog under NSN 5330-01-551-8795. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.