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678721 — SEAL RING,METAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

678721: SEAL RING,METAL.

The SEAL RING,METAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, ring_style: CONTRACTING CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.0645 INCHES NOMINAL IN, inside_diameter: 1.236 INCHES NOMINAL IN, radial_wall_thickness: 0.1420 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-111-5729, 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
678721
NSN: 5330-00-111-5729
FSC: 5330 — Packing and Gasket Materials
CAGE: 83259 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV COMPOSITE SEALING SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
ring_styleCONTRACTING CONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.0645 INCHES NOMINAL IN
inside_diameter1.236 INCHES NOMINAL IN
radial_wall_thickness0.1420 INCHES NOMINAL IN
cross-sectional_shape_stylePLAIN KEYSTONE, STRAIGHT FACE
NSN5330-00-111-5729
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 678721 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
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN KEYSTONE, STRAIGHT FACE
•
JOINT STYLE: VERTICAL JOINT
•
INSIDE DIAMETER: 1.236 INCHES NOMINAL IN
•
RADIAL WALL THICKNESS: 0.1420 INCHES NOMINAL IN
•
RING STYLE: CONTRACTING CONCENTRIC
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL WIDTH0.0645 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEPLAIN KEYSTONE, STRAIGHT FACE
JOINT STYLEVERTICAL JOINT
INSIDE DIAMETER1.236 INCHES NOMINAL IN
RADIAL WALL THICKNESS0.1420 INCHES NOMINAL IN
RING STYLECONTRACTING CONCENTRIC
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 6
9655M01P10Reference document
Same NSN cross-reference
Reference document — Secondary reference
9655M01P07Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9655M01P12Reference document
Same NSN cross-reference
Reference document — Secondary reference
X407CReference document
Same NSN cross-reference
Reference document — Secondary reference
2231Reference document
Same NSN cross-reference
Reference document — Secondary reference
5330PL1335131Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 678721?
678721 is a SEAL RING,METAL.
What parts can replace 678721?
There are 6 known substitutes for 678721: 9655M01P10, 9655M01P07, 9655M01P12 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 678721?
678721 is cataloged in the U.S. Government catalog under NSN 5330-00-111-5729. This indicates validated use in U.S. government and defense supply chains.
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