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25003-4185 — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

25003-4185: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SPREADER, seal_width: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN, temp_rating: -40.0 FAHRENHEIT AND -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT200.0 FAHRENHEIT DEGF, construction: SPLITSPLIT, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL80.0 SHORE DUROMETER A NOMINAL OVERALL, housing_bore_diameter: 18.000 INCHES NOMINAL18.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-249-5056, 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
25003-4185
NSN: 5330-00-249-5056
FSC: 5330 — Packing and Gasket Materials
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SPREADER
seal_width0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
temp_rating-40.0 FAHRENHEIT AND -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT200.0 FAHRENHEIT DEGF
constructionSPLITSPLIT
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL80.0 SHORE DUROMETER A NOMINAL OVERALL
housing_bore_diameter18.000 INCHES NOMINAL18.000 INCHES NOMINAL IN
accommodated_shaft_diameter16.500 INCHES NOMINAL16.500 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIPSINGLE LIP
NSN5330-00-249-5056
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25003-4185 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
•
TEMP RATING: -40.0 FAHRENHEIT AND -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT200.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL OVERALL80.0 SHORE DUROMETER A NOMINAL OVERALL
•
HOUSING BORE DIAMETER: 18.000 INCHES NOMINAL18.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIPSINGLE LIP
•
COLOR: BLACKBLACK
•
ACCOMMODATED SHAFT DIAMETER: 16.500 INCHES NOMINAL16.500 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING SPREADER
TECHNICAL CHARACTERISTICS
TEMP RATING-40.0 FAHRENHEIT AND -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT200.0 FAHRENHEIT DEGF
SEAL WIDTH0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL80.0 SHORE DUROMETER A NOMINAL OVERALL
HOUSING BORE DIAMETER18.000 INCHES NOMINAL18.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIPSINGLE LIP
COLORBLACKBLACK
ACCOMMODATED SHAFT DIAMETER16.500 INCHES NOMINAL16.500 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING SPREADER
CONSTRUCTIONSPLITSPLIT
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
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 25003-4185?
25003-4185 is a SEAL,PLAIN.
What is the NSN for 25003-4185?
25003-4185 is cataloged in the U.S. Government catalog under NSN 5330-00-249-5056. 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.