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102721-3 — GASKET

✓ Government record, cited
3M · ORING SEAL
PRODUCT OVERVIEW

102721-3: GASKET.

The GASKET is a 3M industrial component. Key specifications include material: RUBBER SYNTHETIC AND CELLULOSE OVERALL, hole_diameter: 0.156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.125 INCHES NOMINAL IN, overall_length: 1.125 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-971-5642, 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
102721-3
NSN: 5330-00-971-5642
FSC: 5330 — Packing and Gasket Materials
CAGE: 24930 — L3HARRIS TECHNOLOGIES, INC DIV SPACE & AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC AND CELLULOSE OVERALL
hole_diameter0.156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.125 INCHES NOMINAL IN
overall_length1.125 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter0.875 INCHES NOMINAL IN
bolt_hole_quantity4
outside_corner_radius0.125 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
outside_edge_to_bolt_hole_center_distance_along_width0.172 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.172 INCHES NOMINAL IN
NSN5330-00-971-5642
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 102721-3 MFR: 3M ⚠ 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 THICKNESS: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 0.875 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
OVERALL LENGTH1.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.125 INCHES NOMINAL IN
APERTURE DIAMETER0.875 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.172 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 102721-3?
102721-3 is a GASKET manufactured by 3M.
What is the NSN for 102721-3?
102721-3 is cataloged in the U.S. Government catalog under NSN 5330-00-971-5642. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.