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211993 — PACKING,PREFORMED,BUNA

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

211993: PACKING,PREFORMED,BUNA.

The PACKING,PREFORMED,BUNA is a the manufacturer industrial component. Key specifications include end_item_identification: 4920009694680, general_characteristics_item_description: SYNTHETIC RUBBER MATERIAL,4.499 IN. ID,4.711 IN.

OD,0.106 IN. THK IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-250-9625, 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
211993
NSN: 5330-00-250-9625
NIINs: 002509625, 005208449
FSC: 5330 — Packing and Gasket Materials
CAGE: 21444 — REXNORD INDUSTRIES LLC (USA)
SPECIFICATIONS
end_item_identification4920009694680
general_characteristics_item_descriptionSYNTHETIC RUBBER MATERIAL,4.499 IN. ID,4.711 IN. OD,0.106 IN. THK IN
NSN5330-00-250-9625
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 211993 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
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 17.312 INCHES NOMINAL IN
•
APERTURE DIAMETER: 14.750 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 8
•
BOLT CIRCLE DIAMETER: 16.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER17.312 INCHES NOMINAL IN
APERTURE DIAMETER14.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER16.250 INCHES NOMINAL IN
SPECIAL FEATURES0.750 IN. DEEP RADIUS FROM APERTURE CIRCLE TO BOLT HOLE CIRCLE IN
MATERIALPAPER OVERALL
HOLE DIAMETER0.688 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 211993?
211993 is a PACKING,PREFORMED,BUNA.
What is the NSN for 211993?
211993 is cataloged in the U.S. Government catalog under NSN 5330-00-250-9625. 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.