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Technical Data Sheet
PartsTable / COMPONENT / 66610X-X-C ITEM NO 21
66610X-X-C ITEM NO 21 ✓ 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 SEAL,PLAIN ENCASED 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 5330-01-422-4437, 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
66610X-X-C ITEM NO 21
NSN: 5330-01-422-4437
FSC: 5330
CAGE: 03990 — INGERSOLL-RAND COMPANY DBA INGERSOLL-RAND (USA)
SPECIFICATIONS
Part Number66610X-X-C ITEM NO 21
NSN5330-01-422-4437
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 66610X-X-C ITEM NO 21 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 5
E6-2108Interchangeable
interchangeable cross-reference
interchangeable
9292-6Interchangeable
interchangeable cross-reference
interchangeable
6X7927Interchangeable
interchangeable cross-reference
interchangeable
92931Interchangeable
interchangeable cross-reference
interchangeable
92927Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 66610X-X-C ITEM NO 21?
66610X-X-C ITEM NO 21 is a SEAL,PLAIN ENCASED.
What parts can replace 66610X-X-C ITEM NO 21?
There are 5 known substitutes for 66610X-X-C ITEM NO 21: E6-2108, 9292-6, 6X7927 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66610X-X-C ITEM NO 21?
66610X-X-C ITEM NO 21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-422-4437. 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