PartsTable
Technical Data Sheet
F-8278 PC1R ✓ 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

SEAT,HELICAL COMPRESSION SPRING. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-193-2950, 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
F-8278 PC1R
NSN: 5340-01-193-2950
FSC: 5340
CAGE: 82328 — DRESSER RAND CO TERRY CORP STEAM TURBINE MOTOR AND GENERATOR CO A JOINT VENTURE (USA)
SPECIFICATIONS
Part NumberF-8278 PC1R
NSN5340-01-193-2950
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: F-8278 PC1R 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
42-3016Interchangeable
interchangeable cross-reference
interchangeable
M88206Interchangeable
interchangeable cross-reference
interchangeable
277321Interchangeable
interchangeable cross-reference
interchangeable
ER2-64Interchangeable
interchangeable cross-reference
interchangeable
A-4855Interchangeable
interchangeable cross-reference
interchangeable
423013Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F-8278 PC1R?
F-8278 PC1R is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace F-8278 PC1R?
There are 6 known substitutes for F-8278 PC1R: 42-3016, M88206, 277321 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F-8278 PC1R?
F-8278 PC1R is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-193-2950. This indicates validated use in U.S. government and defense supply chains.
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