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MS9021-341ES — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS9021-341ES: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 65.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.861 INCHES MINIMUM AND 3.929 INCHES MAXIMUM IN, center_hole_diameter: 3.451 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN, cross-sectional_height: 0.210 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-993-9652, 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
MS9021-341ES
NSN: 5331-00-993-9652
FSC: 5331 — O-ring
CAGE: H2313 — ERIKS B.V. (NLD)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating65.0 SHORE DUROMETER A NOMINAL
outside_diameter3.861 INCHES MINIMUM AND 3.929 INCHES MAXIMUM IN
center_hole_diameter3.451 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
cross-sectional_height0.210 INCHES NOMINAL IN
NSN5331-00-993-9652
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS9021-341ES 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
•
CROSS-SECTIONAL HEIGHT: 0.210 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.861 INCHES MINIMUM AND 3.929 INCHES MAXIMUM IN
•
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 3.451 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.210 INCHES NOMINAL IN
OUTSIDE DIAMETER3.861 INCHES MINIMUM AND 3.929 INCHES MAXIMUM IN
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER3.451 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 5
2-341 N506-65Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS3578-341Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS9021-341Reference document
Same NSN cross-reference
Reference document — Secondary reference
PRP568-341-4024-65Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SAE-AS3578Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS9021-341ES?
MS9021-341ES is a O-RING.
What parts can replace MS9021-341ES?
There are 5 known substitutes for MS9021-341ES: 2-341 N506-65, AS3578-341, MS9021-341 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9021-341ES?
MS9021-341ES is cataloged in the U.S. Government catalog under NSN 5331-00-993-9652. This indicates validated use in U.S. government and defense supply chains.
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