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1020996 — GASKET

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

1020996: GASKET.

The GASKET is a 3M industrial component. Key specifications include material: RUBBER BUTADIENE-STYRENE CLASS SBR OVERALL, hole_diameter: 0.101 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.578 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN, aperture_width: 0.890 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN, overall_length: 4.203 INCHES MINIMUM AND 4.235 INCHES MAXIMUM IN, aperture_length: 3.515 INCHES MINIMUM AND 3.547 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-297-9290, 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
1020996
NSN: 5330-00-297-9290
NIINs: 002979290, 017354732
FSC: 5330 — Packing and Gasket Materials
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-STYRENE CLASS SBR OVERALL
hole_diameter0.101 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.578 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN
aperture_width0.890 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
overall_length4.203 INCHES MINIMUM AND 4.235 INCHES MAXIMUM IN
aperture_length3.515 INCHES MINIMUM AND 3.547 INCHES MAXIMUM IN
style_designatorNON-CIRCULAR
bolt_hole_quantity6
inside_corner_radius0.188 INCHES NOMINAL IN
outside_corner_radius0.125 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-297-9290
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1020996 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: 0.031 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE WIDTH: 0.890 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.188 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH4.203 INCHES MINIMUM AND 4.235 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.578 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN
APERTURE WIDTH0.890 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
APERTURE LENGTH3.515 INCHES MINIMUM AND 3.547 INCHES MAXIMUM IN
BOLT HOLE QUANTITY6
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1020996?
1020996 is a GASKET manufactured by 3M.
What is the NSN for 1020996?
1020996 is cataloged in the U.S. Government catalog under NSN 5330-00-297-9290. 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.