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Technical Data Sheet
PartsTable / COMPONENT / 65261W
65261W ✓ 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 SEAL,SPECIAL is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-026-4231, 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
65261W
NSN: 5330-01-026-4231
FSC: 5330
CAGE: 7J854 — TRISEAL CORPORATION DBA TRISEAL WORLDWIDE (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL SAE 1005 1020,O/L LF 0.760 IN. MIN TO 0.765 IN. MAX,ID 3.982 IN. MIN TO 4.066 IN. MAX,W 0.845 IN. MIN TO 0.875 IN MAX IN
NSN5330-01-026-4231
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 65261W 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL SAE 1005 1020,O/L LF 0.760 IN. MIN TO 0.765 IN. MAX,ID 3.982 IN. MIN TO 4.066 IN. MAX,W 0.845 IN. MIN TO 0.875 IN MAX IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL SAE 1005 1020,O/L LF 0.760 IN. MIN TO 0.765 IN. MAX,ID 3.982 IN. MIN TO 4.066 IN. MAX,W 0.845 IN. MIN TO 0.875 IN MAX IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
54B6878H47Interchangeable
interchangeable cross-reference
interchangeable
816718Interchangeable
interchangeable cross-reference
interchangeable
MS51846-24Interchangeable
interchangeable cross-reference
interchangeable
TG2486Interchangeable
interchangeable cross-reference
interchangeable
65261Interchangeable
interchangeable cross-reference
interchangeable
H65261Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 65261W?
65261W is a SEAL,SPECIAL.
What parts can replace 65261W?
There are 13 known substitutes for 65261W: 54B6878H47, 816718, MS51846-24 and 10 more. Substitute compatibility should be verified for your specific system.
Is 65261W still available?
65261W 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