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Technical Data Sheet
PartsTable / COMPONENT / 21008G
21008G ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, securing_device_type: THREADED FASTENER, material_document_and_classification: QQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-100-4898, 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
21008G
NSN: 5340-01-100-4898
FSC: 5340
CAGE: 30377 — SMITHS AEROSPACE, INC., ELECTRONIC SYSTEMS-GRAND RAPIDS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
securing_device_typeTHREADED FASTENER
material_document_and_classificationQQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-100-4898
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21008G 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: QQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: ALUMINUM ALLOY 2024
•
SECURING DEVICE TYPE: THREADED FASTENER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY 2024
SECURING DEVICE TYPETHREADED FASTENER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
21008Upgraded Successor
successor cross-reference
successor
7408NInterchangeable
interchangeable cross-reference
interchangeable
9N08PCInterchangeable
interchangeable cross-reference
interchangeable
100332-001Interchangeable
interchangeable cross-reference
interchangeable
500073Interchangeable
interchangeable cross-reference
interchangeable
470358Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21008G?
21008G is a COVER,ACCESS.
What parts can replace 21008G?
There are 18 known substitutes for 21008G: 21008, 7408N, 9N08PC and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21008G?
21008G is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-100-4898. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026