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12Z9018-1 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12Z9018-1: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING CASE, case_style: SQUARE, seal_width: 0.125 INCHES NOMINAL IN, housing_bore_diameter: 0.500 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-285-4142, 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
12Z9018-1
NSN: 5330-00-285-4142
FSC: 5330 — Packing and Gasket Materials
CAGE: 94135 — NAVAL ORDNANCE STANDARDS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING CASE
case_styleSQUARE
seal_width0.125 INCHES NOMINAL IN
housing_bore_diameter0.500 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter0.250 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed1000 FEET PER MINUTE FT
NSN5330-00-285-4142
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12Z9018-1 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: 0.125 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 0.500 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 1000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.125 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER0.500 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED1000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.250 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 5
154C207PC1Reference document
Same NSN cross-reference
Reference document — Secondary reference
71133Reference document
Same NSN cross-reference
Reference document — Secondary reference
18571Reference document
Same NSN cross-reference
Reference document — Secondary reference
71X7000Reference document
Same NSN cross-reference
Reference document — Secondary reference
00044Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12Z9018-1?
12Z9018-1 is a SEAL,PLAIN ENCASED.
What parts can replace 12Z9018-1?
There are 5 known substitutes for 12Z9018-1: 154C207PC1, 71133, 18571 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12Z9018-1?
12Z9018-1 is cataloged in the U.S. Government catalog under NSN 5330-00-285-4142. 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.