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4T61020-115B — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4T61020-115B: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include construction: ONE-PIECE, attachment_method: ROUND HOLE, end_item_identification: AIRCRAFT C-5, attachment_hole_diameter: 0.260 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN, attachment_feature_quantity: 11, cross-sectional_shape_style: HOLLOW BULB. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-216-5723, 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
4T61020-115B
NSN: 5330-01-216-5723
FSC: 5330 — Packing and Gasket Materials
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
constructionONE-PIECE
attachment_methodROUND HOLE
end_item_identificationAIRCRAFT C-5
attachment_hole_diameter0.260 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
attachment_feature_quantity11
cross-sectional_shape_styleHOLLOW BULB
NSN5330-01-216-5723
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4T61020-115B 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
•
ATTACHMENT HOLE DIAMETER: 0.260 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
•
ATTACHMENT FEATURE QUANTITY: 11
•
CROSS-SECTIONAL SHAPE STYLE: HOLLOW BULB
•
CONSTRUCTION: ONE-PIECE
•
ATTACHMENT METHOD: ROUND HOLE
TECHNICAL CHARACTERISTICS
ATTACHMENT HOLE DIAMETER0.260 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
ATTACHMENT FEATURE QUANTITY11
CROSS-SECTIONAL SHAPE STYLEHOLLOW BULB
END ITEM IDENTIFICATIONAIRCRAFT C-5
CONSTRUCTIONONE-PIECE
ATTACHMENT METHODROUND HOLE
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4T61020-115B?
4T61020-115B is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 4T61020-115B?
4T61020-115B is cataloged in the U.S. Government catalog under NSN 5330-01-216-5723. 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.