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7021-90-212-8124 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7021-90-212-8124: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include peripheral_shape_style: ROUND, MULTI HOLES, end_item_identification: HELICOPTER UTILITY, material_document_and_classification: ASTM-D-4067 ASSN STD SINGLE MATERIAL RESPONSE, part_name_assigned_by_controlling_agency: HOOD LH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-586-3704, 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
7021-90-212-8124
NSN: 5340-01-586-3704
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
peripheral_shape_styleROUND, MULTI HOLES
end_item_identificationHELICOPTER UTILITY
material_document_and_classificationASTM-D-4067 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyHOOD LH
NSN5340-01-586-3704
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7021-90-212-8124 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-D-4067 ASSN STD SINGLE MATERIAL RESPONSE
•
PERIPHERAL SHAPE STYLE: ROUND, MULTI HOLES
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-D-4067 ASSN STD SINGLE MATERIAL RESPONSE
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
PART NAME ASSIGNED BY CONTROLLING AGENCYHOOD LH
END ITEM IDENTIFICATIONHELICOPTER UTILITY
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 demandDemilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 7021-90-212-8124?
7021-90-212-8124 is a COVER,ACCESS.
What is the NSN for 7021-90-212-8124?
7021-90-212-8124 is cataloged in the U.S. Government catalog under NSN 5340-01-586-3704. 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.