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Technical Data Sheet
P2178 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL, outside_diameter: 2.115 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 1.941 INCHES NOMINAL IN, fsc_application_data: ALTIMETER,PRESSURIZED COMPARTMENT, maximum_pressure_rating: 100.0 POUNDS PER SQUARE INCH (PSI) LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-972-1339, 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
P2178
NSN: 5330-00-972-1339
FSC: 5330
CAGE: 98810 — AEROSONIC LLC (USA)
SPECIFICATIONS
materialRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
outside_diameter2.115 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter1.941 INCHES NOMINAL IN
fsc_application_dataALTIMETER,PRESSURIZED COMPARTMENT
maximum_pressure_rating100.0 POUNDS PER SQUARE INCH (PSI) LBS
NSN5330-00-972-1339
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P2178 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
MATERIAL: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
STYLE DESIGNATOR: CIRCULAR
OUTSIDE DIAMETER: 2.115 INCHES NOMINAL IN
APERTURE DIAMETER: 1.941 INCHES NOMINAL IN
FSC APPLICATION DATA: ALTIMETER,PRESSURIZED COMPARTMENT
MAXIMUM PRESSURE RATING: 100.0 POUNDS PER SQUARE INCH (PSI) LBS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
STYLE DESIGNATORCIRCULAR
OUTSIDE DIAMETER2.115 INCHES NOMINAL IN
APERTURE DIAMETER1.941 INCHES NOMINAL IN
FSC APPLICATION DATAALTIMETER,PRESSURIZED COMPARTMENT
MAXIMUM PRESSURE RATING100.0 POUNDS PER SQUARE INCH (PSI) LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
11162Interchangeable
interchangeable cross-reference
interchangeable
NFT420Interchangeable
interchangeable cross-reference
interchangeable
SK8811Interchangeable
interchangeable cross-reference
interchangeable
C45-5051-07-00Interchangeable
interchangeable cross-reference
interchangeable
10CM-9905-DInterchangeable
interchangeable cross-reference
interchangeable
2680849Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P2178?
P2178 is a GASKET.
What parts can replace P2178?
There are 14 known substitutes for P2178: 11162, NFT420, SK8811 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P2178?
P2178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-972-1339. This indicates validated use in U.S. government and defense supply chains.
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