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Q4340-366Y — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

Q4340-366Y: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, temp_rating: -55.0 FAHRENHEIT AND 220.0 FAHRENHEIT DEGF, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 3.770 INCHES NOMINAL IN, center_hole_diameter: 3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN, cross-sectional_height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-004-7204, 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
Q4340-366Y
NSN: 5330-00-004-7204
FSC: 5330 — Packing and Gasket Materials
CAGE: 07322 — MINNESOTA RUBBER CO (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
temp_rating-55.0 FAHRENHEIT AND 220.0 FAHRENHEIT DEGF
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter3.770 INCHES NOMINAL IN
center_hole_diameter3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN
cross-sectional_height0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
cross-sectional_shape_styleSPECIAL
material_document_and_classification366Y,FSCM 07322 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-004-7204
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: Q4340-366Y 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: -55.0 FAHRENHEIT AND 220.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 366Y,FSCM 07322 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 3.770 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
TECHNICAL CHARACTERISTICS
TEMP RATING-55.0 FAHRENHEIT AND 220.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION366Y,FSCM 07322 MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER3.770 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
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 6
10078441Reference document
Same NSN cross-reference
Reference document — Informative reference only
5330PL0884072Reference document
Same NSN cross-reference
Reference document — Informative reference only
CN1-Q4340-366YReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10363987Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
QRAR04340-N7004Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
Q430-366YReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is Q4340-366Y?
Q4340-366Y is a PACKING,PREFORMED.
What parts can replace Q4340-366Y?
There are 6 known substitutes for Q4340-366Y: 10078441, 5330PL0884072, CN1-Q4340-366Y and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for Q4340-366Y?
Q4340-366Y is cataloged in the U.S. Government catalog under NSN 5330-00-004-7204. 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.