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AD32999-4 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AD32999-4: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM OVERALL, construction: SOLIDSOLID, overall_length: 81.000 INCHES MINIMUM AND 81.000 INCHES MINIMUM AND 87.000 INCHES MAXIMUM87.000 INCHES MAXIMUM IN, fabrication_method: CELLULAR, UNEXPLODEDCELLULAR, UNEXPLODED, cross-sectional_width: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN, cross-sectional_height: 0.690 INCHES NOMINAL0.690 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-266-3859, 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
AD32999-4
NSN: 5330-01-266-3859
FSC: 5330 — Packing and Gasket Materials
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialRUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM OVERALL
constructionSOLIDSOLID
overall_length81.000 INCHES MINIMUM AND 81.000 INCHES MINIMUM AND 87.000 INCHES MAXIMUM87.000 INCHES MAXIMUM IN
fabrication_methodCELLULAR, UNEXPLODEDCELLULAR, UNEXPLODED
cross-sectional_width0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
cross-sectional_height0.690 INCHES NOMINAL0.690 INCHES NOMINAL IN
NSN5330-01-266-3859
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AD32999-4 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: 0.690 INCHES NOMINAL0.690 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
•
COLOR: BLACKBLACK
•
MATERIAL: RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM OVERALL
•
FABRICATION METHOD: CELLULAR, UNEXPLODEDCELLULAR, UNEXPLODED
•
CONSTRUCTION: SOLIDSOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.690 INCHES NOMINAL0.690 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
OVERALL LENGTH81.000 INCHES MINIMUM AND 81.000 INCHES MINIMUM AND 87.000 INCHES MAXIMUM87.000 INCHES MAXIMUM IN
COLORBLACKBLACK
MATERIALRUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM OVERALL
FABRICATION METHODCELLULAR, UNEXPLODEDCELLULAR, UNEXPLODED
CONSTRUCTIONSOLIDSOLID
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
518Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 AD32999-4?
AD32999-4 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace AD32999-4?
There is 1 known substitute for AD32999-4: 518. Substitute compatibility should be verified for your specific system.
What is the NSN for AD32999-4?
AD32999-4 is cataloged in the U.S. Government catalog under NSN 5330-01-266-3859. This indicates validated use in U.S. government and defense supply chains.
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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.