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C5N3-6571-B — SEAL,VALVE STEM

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

C5N3-6571-B: SEAL,VALVE STEM.

The SEAL,VALVE STEM is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-062-4023, 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
C5N3-6571-B
NSN: 5330-00-062-4023
FSC: 5330 — Packing and Gasket Materials
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
general_characteristics_item_descriptionMATERIAL,RUBBER,SPEC,ESE-M2D53-A,DIMENIONS,OUTSIDE DIA OF 0.450 IN.,INSIDE DIA OF 0.300 IN.,WALL THK OF 0.080 IN.,MAXIMUM VARIANCE OF 0.010 IN. PERMITTED ON THICKNESS IN
NSN5330-00-062-4023
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C5N3-6571-B 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL,RUBBER,SPEC,ESE-M2D53-A,DIMENIONS,OUTSIDE DIA OF 0.450 IN.,INSIDE DIA OF 0.300 IN.,WALL THK OF 0.080 IN.,MAXIMUM VARIANCE OF 0.010 IN. PERMITTED ON THICKNESS IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL,RUBBER,SPEC,ESE-M2D53-A,DIMENIONS,OUTSIDE DIA OF 0.450 IN.,INSIDE DIA OF 0.300 IN.,WALL THK OF 0.080 IN.,MAXIMUM VARIANCE OF 0.010 IN. PERMITTED ON THICKNESS IN
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 1
C5NE-6571-BReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 C5N3-6571-B?
C5N3-6571-B is a SEAL,VALVE STEM.
What parts can replace C5N3-6571-B?
There is 1 known substitute for C5N3-6571-B: C5NE-6571-B. Substitute compatibility should be verified for your specific system.
What is the NSN for C5N3-6571-B?
C5N3-6571-B is cataloged in the U.S. Government catalog under NSN 5330-00-062-4023. 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.