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Technical Data Sheet
PartsTable / O-RING / 2-042 N506-65
2-042 N506-65 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 65.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.349 INCHES MINIMUM AND 3.409 INCHES MAXIMUM IN, center_hole_diameter: 3.244 INCHES MINIMUM AND 3.254 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 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 5331-00-805-8688, 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
2-042 N506-65
NSN: 5331-00-805-8688
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating65.0 SHORE DUROMETER A NOMINAL
outside_diameter3.349 INCHES MINIMUM AND 3.409 INCHES MAXIMUM IN
center_hole_diameter3.244 INCHES MINIMUM AND 3.254 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5331-00-805-8688
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2-042 N506-65 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
•
CENTER HOLE DIAMETER: 3.244 INCHES MINIMUM AND 3.254 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 3.349 INCHES MINIMUM AND 3.409 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER3.244 INCHES MINIMUM AND 3.254 INCHES MAXIMUM IN
OUTSIDE DIAMETER3.349 INCHES MINIMUM AND 3.409 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
103573Interchangeable
interchangeable cross-reference
interchangeable
42-7100-010-070Interchangeable
interchangeable cross-reference
interchangeable
42202Interchangeable
interchangeable cross-reference
interchangeable
5635Interchangeable
interchangeable cross-reference
interchangeable
310-0740-510Interchangeable
interchangeable cross-reference
interchangeable
LN5635Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-042 N506-65?
2-042 N506-65 is a O-RING.
What parts can replace 2-042 N506-65?
There are 24 known substitutes for 2-042 N506-65: 103573, 42-7100-010-070, 42202 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-042 N506-65?
2-042 N506-65 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-805-8688. 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