PartsTable
Technical Data Sheet
21920-0007 ✓ 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 O-RING 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 5331-01-277-0161, 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
21920-0007
NSN: 5331-01-277-0161
FSC: 5331 — O-RING
CAGE: 50703 — MIDDLEBY MARSHALL INC CONVEYOR OVENS AND MIXERS DIV (USA)
SPECIFICATIONS
Part Number21920-0007
NSN5331-01-277-0161
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21920-0007 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 10
15279Interchangeable
interchangeable cross-reference
interchangeable
2185644-1Interchangeable
interchangeable cross-reference
interchangeable
ST5M1416-002Interchangeable
interchangeable cross-reference
interchangeable
15276Interchangeable
interchangeable cross-reference
interchangeable
152-79-00Interchangeable
interchangeable cross-reference
interchangeable
1152-0079Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21920-0007?
21920-0007 is a O-RING.
What parts can replace 21920-0007?
There are 10 known substitutes for 21920-0007: 15279, 2185644-1, ST5M1416-002 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21920-0007?
21920-0007 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-277-0161. This indicates validated use in U.S. government and defense supply chains.
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