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CFN70257 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CFN70257: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, outside_diameter: 1.503 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-083-7714, 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
CFN70257
NSN: 5330-00-083-7714
FSC: 5330 — Packing and Gasket Materials
CAGE: 82254 — CURTIS DYNA-FOG, LTD. (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
outside_diameter1.503 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter1.498 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.125 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-083-7714
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CFN70257 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: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
OUTSIDE DIAMETER: 1.503 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 1.498 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
SEAL WIDTH0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
OUTSIDE DIAMETER1.503 INCHES NOMINAL IN
HOUSING BORE DIAMETER1.498 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER1.125 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
MATERIALSTEEL CASE
SUBSTITUTES & CROSS-REFERENCES 5
6754Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
46394Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
340815Reference document
Same NSN cross-reference
Reference document — Secondary reference
00044Reference document
Same NSN cross-reference
Reference document — Secondary reference
X-271-27Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 CFN70257?
CFN70257 is a SEAL,PLAIN ENCASED.
What parts can replace CFN70257?
There are 5 known substitutes for CFN70257: 6754, 46394, 340815 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CFN70257?
CFN70257 is cataloged in the U.S. Government catalog under NSN 5330-00-083-7714. This indicates validated use in U.S. government and defense supply chains.
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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.