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PartsTable / COMPONENT / 681955
681955 ✓ 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 FILTER ELEMENT,FLUID is a the manufacturer industrial component. Key specifications include design_type: NONREUSABLE, body_diameter: 3.688 INCHES NOMINAL IN, style_designator: CYLINDRICAL W/ INTEGRAL OUTER CASING, thread_direction: RIGHT-HAND, body_overall_length: 4.375 INCHES NOMINAL IN, nominal_thread_size: 0.688 INCHES 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 5340-00-505-6393, 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
681955
NSN: 5340-00-505-6393
FSC: 5340
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
design_typeNONREUSABLE
body_diameter3.688 INCHES NOMINAL IN
style_designatorCYLINDRICAL W/ INTEGRAL OUTER CASING
thread_directionRIGHT-HAND
body_overall_length4.375 INCHES NOMINAL IN
nominal_thread_size0.688 INCHES IN
end_item_identificationTRUCK TRACTOR;2320-01-318-9902.
media_for_which_designedWATER
thread_series_designatorUNF
NSN5340-00-505-6393
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 681955 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
•
BUCKLE LOCATION: ON END
•
MATERIAL: STEEL BUCKLE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-490A,AMEND. 1 MIL SPEC 1ST TREATMENT RESPONSE AND TT-E-485C,AMEND. 1 FED SPEC 2ND TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED A
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-W-530, TYPE 3, CLASS 4 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
SURFACE TREATMENT: PHOSPHATE ZINC AND ENAMEL SEMIGLOSS OR ZINC AND CHROMATE AND ENAMEL SEMIGLOSS LOCATION NOT OTHERWISE SPECIFIED
•
BUCKLE FASTENING METHOD: SEWED
•
BUCKLE STYLE DESIGNATOR: NOTCHED EDGE
TECHNICAL CHARACTERISTICS (FLIS)
BUCKLE LOCATIONON END
MATERIALSTEEL BUCKLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-490A,AMEND. 1 MIL SPEC 1ST TREATMENT RESPONSE AND TT-E-485C,AMEND. 1 FED SPEC 2ND TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED A
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-W-530, TYPE 3, CLASS 4 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENTPHOSPHATE ZINC AND ENAMEL SEMIGLOSS OR ZINC AND CHROMATE AND ENAMEL SEMIGLOSS LOCATION NOT OTHERWISE SPECIFIED
MATERIALCOPPER ALLOY END CLIP
BUCKLE FASTENING METHODSEWED
BUCKLE STYLE DESIGNATORNOTCHED EDGE
WIDTH1.000 INCHES NOMINAL IN
END CLIP QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
327077Interchangeable
interchangeable cross-reference
interchangeable
C1604-1Interchangeable
interchangeable cross-reference
interchangeable
HOB2.3DInterchangeable
interchangeable cross-reference
interchangeable
351307-5Interchangeable
interchangeable cross-reference
interchangeable
NF100Interchangeable
interchangeable cross-reference
interchangeable
FWC2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 681955?
681955 is a FILTER ELEMENT,FLUID.
What parts can replace 681955?
There are 10 known substitutes for 681955: 327077, C1604-1, HOB2.3D and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 681955?
681955 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-505-6393. 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