PartsTable
Technical Data Sheet
PartsTable / MRO / 56954
56954 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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: PLASTIC PHENOL FORMALDEHYDE (PMO), overall_width: 1.875 INCHES NOMINAL IN, overall_height: 2.375 INCHES NOMINAL IN, overall_length: 3.750 INCHES NOMINAL IN, fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-409-3061, 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
MRO→ MRO_GENERAL→ 56954
NSN: 5331-00-409-3061
FSC: 5331 — O-RING
CAGE: 93835 — PARKER HANNIFIN CORPORATION DIV HYDRAULIC SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialPLASTIC PHENOL FORMALDEHYDE (PMO)
overall_width1.875 INCHES NOMINAL IN
overall_height2.375 INCHES NOMINAL IN
overall_length3.750 INCHES NOMINAL IN
fsc_application_dataTELETYPE AND FACSIMILE EQUIPMENT
NSN5331-00-409-3061
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 56954 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 HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
CENTER HOLE DIAMETER: 1.231 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
CENTER HOLE DIAMETER1.231 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
791LXInterchangeable
interchangeable cross-reference
interchangeable
SM-C-187680Interchangeable
interchangeable cross-reference
interchangeable
12015Interchangeable
interchangeable cross-reference
interchangeable
87563Interchangeable
interchangeable cross-reference
interchangeable
56954Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56954?
56954 is a COUPLING HALF,QUICK DISCONNECT. It is classified as a MRO (MRO_GENERAL).
What parts can replace 56954?
There are 5 known substitutes for 56954: 791LX, SM-C-187680, 12015 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 56954?
56954 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-409-3061. 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