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X218481 — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

X218481: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL SPRING, seal_width: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, construction: TWO-PIECE, accommodated_shaft_diameter: 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN, cross-sectional_shape_style: C-SECTION W/ HELICAL SPRING, material_document_and_classification: QQ-W-423,TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE SPRING. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-054-0853, 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
X218481
NSN: 5330-01-054-0853
FSC: 5330 — Packing and Gasket Materials
CAGE: 09055 — BAL SEAL ENGINEERING, INC. (USA)
SPECIFICATIONS
materialSTEEL SPRING
seal_width0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
constructionTWO-PIECE
accommodated_shaft_diameter0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
cross-sectional_shape_styleC-SECTION W/ HELICAL SPRING
material_document_and_classificationQQ-W-423,TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE SPRING
NSN5330-01-054-0853
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: X218481 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
•
SEAL WIDTH: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3650 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
•
CROSS-SECTIONAL SHAPE STYLE: C-SECTION W/ HELICAL SPRING
•
ACCOMMODATED SHAFT DIAMETER: 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
•
MATERIAL: STEEL SPRING
•
CONSTRUCTION: TWO-PIECE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3650 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423,TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE SPRING
CROSS-SECTIONAL SHAPE STYLEC-SECTION W/ HELICAL SPRING
ACCOMMODATED SHAFT DIAMETER0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
MATERIALSTEEL SPRING
MATERIALPLASTIC POLYCHLOROTRIFLUOROETHYLENE SEALING ELEMENT
CONSTRUCTIONTWO-PIECE
SUBSTITUTES & CROSS-REFERENCES 2
651-077-9201Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
304-110Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 X218481?
X218481 is a SEAL,PLAIN.
What parts can replace X218481?
There are 2 known substitutes for X218481: 651-077-9201, 304-110. Substitute compatibility should be verified for your specific system.
What is the NSN for X218481?
X218481 is cataloged in the U.S. Government catalog under NSN 5330-01-054-0853. This indicates validated use in U.S. government and defense supply chains.
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