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Technical Data Sheet
PartsTable / O-RING / C690-2
C690-2 ✓ 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 COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 1.922 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, connection_style: FLARED ALL ENDS, outside_diameter: 0.356 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN, style_designator: MALE COUPLING HALF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-135-8622, 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
C690-2
NSN: 5331-00-135-8622
FSC: 5331 — O-RING
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length1.922 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleFLARED ALL ENDS
outside_diameter0.356 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
center_hole_diameter0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
cross-sectional_height0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
quick_disconnect_methodCAM-LOCKING FIRST QUICK DISCONNECT END
material_document_and_classificationQQ-A-591 FED SPEC ALL MATERIAL RESPONSES BODY
nominal_outside_diameter_tube_accommodated0.875 INCHES ALL ENDS IN
NSN5331-00-135-8622
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C690-2 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
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CENTER HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.356 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.356 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
AA3165-001G-16081Interchangeable
interchangeable cross-reference
interchangeable
P-819Interchangeable
interchangeable cross-reference
interchangeable
700A182Interchangeable
interchangeable cross-reference
interchangeable
457-6002Interchangeable
interchangeable cross-reference
interchangeable
MIS-13674/10Interchangeable
interchangeable cross-reference
interchangeable
SP3737Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C690-2?
C690-2 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace C690-2?
There are 27 known substitutes for C690-2: AA3165-001G-16081, P-819, 700A182 and 24 more. Substitute compatibility should be verified for your specific system.
Is C690-2 still available?
C690-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026