PartsTable
Technical Data Sheet
Download PDF

21231681 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21231681: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYSTYRENE, outside_diameter: 0.245 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN, part_name_assigned_by_controlling_agency: SEALING RING FOR MULTI-PIECE RIMS. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-610-8791, 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
21231681
NSN: 5331-01-610-8791
FSC: 5331 — O-ring
CAGE: A242N — VOLVO LASTVAGNAR AKTIEBOLAG (SWE)
SPECIFICATIONS
materialPLASTIC POLYSTYRENE
outside_diameter0.245 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
part_name_assigned_by_controlling_agencySEALING RING FOR MULTI-PIECE RIMS
NSN5331-01-610-8791
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21231681 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
•
OUTSIDE DIAMETER: 0.245 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
•
COLOR: BLACK
•
MATERIAL: PLASTIC POLYSTYRENE
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.245 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
COLORBLACK
PART NAME ASSIGNED BY CONTROLLING AGENCYSEALING RING FOR MULTI-PIECE RIMS
MATERIALPLASTIC POLYSTYRENE
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 2
OR-220-TGSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7421231681Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 21231681?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 21231681?
21231681 is a O-RING.
What parts can replace 21231681?
There are 2 known substitutes for 21231681: OR-220-TG, 7421231681. Substitute compatibility should be verified for your specific system.
What is the NSN for 21231681?
21231681 is cataloged in the U.S. Government catalog under NSN 5331-01-610-8791. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 21231681

✓ 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.