PartsTable
Technical Data Sheet
Download PDF

990105-1 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

990105-1: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER POLYISOPRENE NATURAL CLASS NR OVERALL, hole_diameter: 0.256 INCHES MINIMUM AND 0.262 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 4.546 INCHES MINIMUM AND 4.576 INCHES MAXIMUM IN, special_features: 2 HOLES OFFSET ON BOLT CIRCLE DIA ON FAR SIDE, aperture_diameter: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN, bolt_circle_diameter: 3.700 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-041-1890, 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
990105-1
NSN: 5330-01-041-1890
FSC: 5330 — Packing and Gasket Materials
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialRUBBER POLYISOPRENE NATURAL CLASS NR OVERALL
hole_diameter0.256 INCHES MINIMUM AND 0.262 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter4.546 INCHES MINIMUM AND 4.576 INCHES MAXIMUM IN
special_features2 HOLES OFFSET ON BOLT CIRCLE DIA ON FAR SIDE
aperture_diameter2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
bolt_hole_quantity8
bolt_circle_diameter3.700 INCHES NOMINAL IN
cross-sectional_thickness0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-3065 TY R CL RN635 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-041-1890
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 990105-1 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 THICKNESS: 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-3065 TY R CL RN635 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 4.546 INCHES MINIMUM AND 4.576 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
•
BOLT HOLE QUANTITY: 8
•
BOLT CIRCLE DIAMETER: 3.700 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-3065 TY R CL RN635 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER4.546 INCHES MINIMUM AND 4.576 INCHES MAXIMUM IN
APERTURE DIAMETER2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER3.700 INCHES NOMINAL IN
SPECIAL FEATURES2 HOLES OFFSET ON BOLT CIRCLE DIA ON FAR SIDE
MATERIALRUBBER POLYISOPRENE NATURAL CLASS NR OVERALL
HOLE DIAMETER0.256 INCHES MINIMUM AND 0.262 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED 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
Ready to buy 990105-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 990105-1?
990105-1 is a GASKET.
What is the NSN for 990105-1?
990105-1 is cataloged in the U.S. Government catalog under NSN 5330-01-041-1890. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 990105-1

✓ 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.