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Technical Data Sheet
PartsTable / COMPONENT / D2021-2
D2021-2 ✓ 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 BRACKET,MOUNTING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-666-4088, 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
D2021-2
NSN: 5340-01-666-4088
FSC: 5340
CAGE: 88759 — DYNATECT MANUFACTURING, INC. DBA DYNATECT MANUFACTURING INC (USA)
SPECIFICATIONS
Part NumberD2021-2
NSN5340-01-666-4088
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D2021-2 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
D-2021Interchangeable
interchangeable cross-reference
interchangeable
50SA10FInterchangeable
interchangeable cross-reference
interchangeable
50 SA 10 GInterchangeable
interchangeable cross-reference
interchangeable
03400004Interchangeable
interchangeable cross-reference
interchangeable
0340000 FIND 3Interchangeable
interchangeable cross-reference
interchangeable
10497522Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D2021-2?
D2021-2 is a BRACKET,MOUNTING.
What parts can replace D2021-2?
There are 14 known substitutes for D2021-2: D-2021, 50SA10F, 50 SA 10 G and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D2021-2?
D2021-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-666-4088. 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