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PartsTable / COMPONENT / MIL-G-21610 TYPE I
MIL-G-21610 TYPE I ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, outside_diameter: 1.699 INCHES NOMINAL IN, center_hole_diameter: 1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN, cross-sectional_height: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-595-6669, 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
MIL-G-21610 TYPE I
NSN: 5330-00-595-6669
FSC: 5330
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER SYNTHETIC
outside_diameter1.699 INCHES NOMINAL IN
center_hole_diameter1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN
cross-sectional_height0.125 INCHES NOMINAL IN
NSN5330-00-595-6669
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-G-21610 TYPE I 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
•
PERIPHERAL DIAMETER: 6.762 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 6.444 INCHES MINIMUM AND 6.524 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
PERIPHERAL DIAMETER6.762 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER6.444 INCHES MINIMUM AND 6.524 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
MILG21610TYPEIInterchangeable
interchangeable cross-reference
interchangeable
AS568-221Interchangeable
interchangeable cross-reference
interchangeable
AS568B-221Interchangeable
interchangeable cross-reference
interchangeable
AS568-260Interchangeable
interchangeable cross-reference
interchangeable
AS568-260-36624Interchangeable
interchangeable cross-reference
interchangeable
2-260 N304-75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-G-21610 TYPE I?
MIL-G-21610 TYPE I is a PACKING,PREFORMED.
What parts can replace MIL-G-21610 TYPE I?
There are 8 known substitutes for MIL-G-21610 TYPE I: MILG21610TYPEI, AS568-221, AS568B-221 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-G-21610 TYPE I?
MIL-G-21610 TYPE I is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-595-6669. 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