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12641-2 — 12641-2

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12641-2: 12641-2.

The 12641-2 is a the manufacturer industrial component. Key specifications include inner_groove_width: 0.196 INCHES NOMINAL IN, peripheral_diameter: 4.370 INCHES NOMINAL IN, center_hole_diameter: 4.000 INCHES NOMINAL IN, cross-sectional_height: 0.380 INCHES NOMINAL IN, cross-sectional_shape_style: SPECIAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-099-4213, 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
12641-2
NSN: 5330-01-099-4213
NIINs: 010994213, 011975149
FSC: 5330 — Packing and Gasket Materials
CAGE: 10138 — ASTRONAUTICS CORPORATION OF AMERICA (USA)
SPECIFICATIONS
inner_groove_width0.196 INCHES NOMINAL IN
peripheral_diameter4.370 INCHES NOMINAL IN
center_hole_diameter4.000 INCHES NOMINAL IN
cross-sectional_height0.380 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
NSN5330-01-099-4213
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12641-2 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: 0.380 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 4.370 INCHES NOMINAL IN
•
INNER GROOVE WIDTH: 0.196 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 4.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.380 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER4.370 INCHES NOMINAL IN
INNER GROOVE WIDTH0.196 INCHES NOMINAL IN
CENTER HOLE DIAMETER4.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12641-2?
12641-2 is a 12641-2.
What is the NSN for 12641-2?
12641-2 is cataloged in the U.S. Government catalog under NSN 5330-01-099-4213. 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.