PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1951A3
1951A3 ✓ 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: ALUMINUM OVERALL, outside_diameter: 0.793 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.688 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN, cross-sectional_thickness: 0.025 INCHES NOMINAL IN, cross-sectional_shape_style: RECTANGULAR METAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-584-5933, 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
1951A3
NSN: 5330-00-584-5933
FSC: 5330
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
outside_diameter0.793 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.688 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
cross-sectional_thickness0.025 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR METAL
material_document_and_classification1100,FSCM 91816 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-584-5933
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1951A3 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 SHAPE STYLE: RECTANGULAR METAL
•
CROSS-SECTIONAL THICKNESS: 0.025 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.793 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1100,FSCM 91816 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: ALUMINUM OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
APERTURE DIAMETER: 0.688 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
CROSS-SECTIONAL THICKNESS0.025 INCHES NOMINAL IN
OUTSIDE DIAMETER0.793 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION1100,FSCM 91816 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM OVERALL
STYLE DESIGNATORCIRCULAR
APERTURE DIAMETER0.688 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
22E1Interchangeable
interchangeable cross-reference
interchangeable
617864Interchangeable
interchangeable cross-reference
interchangeable
1951Interchangeable
interchangeable cross-reference
interchangeable
29-32-9Interchangeable
interchangeable cross-reference
interchangeable
WPP1536Interchangeable
interchangeable cross-reference
interchangeable
541-0D6AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1951A3?
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 1951A3?
1951A3 is a GASKET.
What parts can replace 1951A3?
There are 15 known substitutes for 1951A3: 22E1, 617864, 1951 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1951A3?
1951A3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-584-5933. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1951A3

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026