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Technical Data Sheet
PartsTable / O-RING / 221-8307
221-8307 ✓ 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. Key specifications include material: RUBBER SYNTHETIC, outside_diameter: 1.699 INCHES NOMINAL IN, center_hole_diameter: 1.415 INCHES MINIMUM AND 1.427 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM 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 5331-00-925-4334, 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
221-8307
NSN: 5331-00-925-4334
FSC: 5331 — O-RING
CAGE: 25184 — PARKER HANNIFIN CORPORATION DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
outside_diameter1.699 INCHES NOMINAL IN
center_hole_diameter1.415 INCHES MINIMUM AND 1.427 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-925-4334
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 221-8307 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
•
CENTER HOLE DIAMETER: 1.415 INCHES MINIMUM AND 1.427 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.699 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER1.415 INCHES MINIMUM AND 1.427 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.699 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 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
4-2406-32AInterchangeable
interchangeable cross-reference
interchangeable
4-2604-32AInterchangeable
interchangeable cross-reference
interchangeable
R6491610-F121Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221-8307?
221-8307 is a O-RING.
What parts can replace 221-8307?
There are 8 known substitutes for 221-8307: MILG21610TYPEI, AS568-221, AS568B-221 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221-8307?
221-8307 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-925-4334. 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