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Technical Data Sheet
PartsTable / COMPONENT / 869751-3
869751-3 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROSILICONE CLASS FQ OVERALL, overall_width: 2.842 INCHES MINIMUM AND 2.843 INCHES MAXIMUM IN, overall_length: 2.843 INCHES MINIMUM AND 2.844 INCHES MAXIMUM IN, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL, elongation_percentage: 125 MAXIMUM, cross-sectional_thickness: 0.033 INCHES MINIMUM AND 0.034 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 5330-01-016-3551, 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
869751-3
NSN: 5330-01-016-3551
FSC: 5330
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ OVERALL
overall_width2.842 INCHES MINIMUM AND 2.843 INCHES MAXIMUM IN
overall_length2.843 INCHES MINIMUM AND 2.844 INCHES MAXIMUM IN
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
elongation_percentage125 MAXIMUM
cross-sectional_thickness0.033 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
material_document_and_classificationMIL-R-25988 TY 2 CL 1 GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-016-3551
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 869751-3 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
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-25988 TY 2 CL 1 GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CROSS-SECTIONAL THICKNESS: 0.033 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH2.842 INCHES MINIMUM AND 2.843 INCHES MAXIMUM IN
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-25988 TY 2 CL 1 GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
ELONGATION PERCENTAGE125 MAXIMUM
CROSS-SECTIONAL THICKNESS0.033 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
OVERALL LENGTH2.843 INCHES MINIMUM AND 2.844 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROSILICONE CLASS FQ OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
3050015274Interchangeable
interchangeable cross-reference
interchangeable
880052-0000Interchangeable
interchangeable cross-reference
interchangeable
4182250-5Interchangeable
interchangeable cross-reference
interchangeable
6797813Interchangeable
interchangeable cross-reference
interchangeable
UT1AInterchangeable
interchangeable cross-reference
interchangeable
990012Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 869751-3?
869751-3 is a GASKET.
What parts can replace 869751-3?
There are 8 known substitutes for 869751-3: 3050015274, 880052-0000, 4182250-5 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 869751-3?
869751-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-016-3551. 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