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X1243 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

X1243: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include diameter: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN, material: STEEL COMP 1118 STUD, drive_type: SLOTTED, construction: SOLID, eyelet_length: 0.080 INCHES NOMINAL IN, stud_diameter: 0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-270-7293, 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
X1243
NSN: 5330-00-270-7293
NIINs: 002707293, 013968336
FSC: 5330 — Packing and Gasket Materials
CAGE: 70485 — ATLANTIC INDIA RUBBER CO INC (USA)
SPECIFICATIONS
diameter0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
materialSTEEL COMP 1118 STUD
drive_typeSLOTTED
constructionSOLID
eyelet_length0.080 INCHES NOMINAL IN
stud_diameter0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
special_featuresD IN P/N SMOOTH FINI
stud_head_height0.285 INCHES NOMINAL IN
surface_treatmentCADMIUM AND PRIMER OVERALL
fabrication_methodSOLID
stud_assembly_styleSTUD ASSEMBLY
securing_device_typeSPRING
NSN5330-00-270-7293
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: X1243 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 HEIGHT: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.438 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
FABRICATION METHOD: SOLID
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.438 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
FABRICATION METHODSOLID
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 3
1800704-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SCD333577-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
SCD333230-3ITEM3SCD333230-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is X1243?
X1243 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace X1243?
There are 3 known substitutes for X1243: 1800704-4, SCD333577-2, SCD333230-3ITEM3SCD333230-2. Substitute compatibility should be verified for your specific system.
What is the NSN for X1243?
X1243 is cataloged in the U.S. Government catalog under NSN 5330-00-270-7293. 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.